| Entries |
| Document | Title | Date |
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| 20080223829 | Method for arc-welding with alternating current - The invention pertains to a method for arc welding with a consumable electrode and with high deposition rates, wherein an alternating current is applied between the electrode and a work piece in order to generate the arc, wherein the alternating current has a current waveform that repeats itself after one period, and wherein the current waveform has at least one positive phase that is divided into at least one positive high-current phase and into at least one positive basic current phase and at least one negative phase within one period. According to the invention, the positive basic current phase is applied within the period after the positive high-current phase and a diffuse arc burns in the negative phase. In this case, it needs to be observed that the positive basic current phase is sufficiently long. | 09-18-2008 |
| 20080223830 | SHIELDING GAS CYLINDER HOLDER FOR WELDING-TYPE DEVICES - A welding-type device and gas system for use therewith is disclosed. The welding-type device includes a power supply constructed to generate a welding-type power, a housing enclosing the power source, and a cylinder holder attached to an external surface of the housing. The device further includes a pressure vessel removably secured within the cylinder holder, the pressure vessel constructed to provide a shielding gas to a weld and having a height that is generally less than a height of the housing. | 09-18-2008 |
| 20080237196 | CONSUMABLE ELECTRODE TYPE GAS SHIELDED ARC WELDING CONTROL APPARATUS AND WELDING CONTROL METHOD - In consumable electrode type gas shielded arc welding, a time second order differential value of a welding voltage or an arc resistance is calculated. Based on the second order differential value, a detachment of a droplet or a timing just before the detachment is detected. After the droplet detachment or the timing just before the detachment is detected, a welding current value is immediately switched to a predetermined current value lower than that at the time of the detection. According to the control, even if welding conditions are changed or wire extension lengths are changed in the welding, the droplet detachment can be correctly detected. | 10-02-2008 |
| 20080245774 | Laser-rotate arc hybrid welding system and thereof method - The present invention relates to a laser-rotating arc hybrid welding system and a welding method using the system. The laser-rotating arc hybrid welding system of the present invention includes an arc discharge unit ( | 10-09-2008 |
| 20080283505 | Welding torch cable strain relief system and method - Conduits exiting from a welding torch handle are supported by a stiffening arrangement to limit the angle or radius of curvature of the conduits and thereby to limit strain and possible damage. The stiffening arrangement may include a stiffener that does not extend completely around the conduits, but is captured in a jacket that may be secured to the torch handle and wrapped around the conduits. Alternatively, an integral stiffener or stiffener assembly may include a tongue-like-stiffener extending from the handle to support the conduits and to limit their radius of curvature as they exit the handle. | 11-20-2008 |
| 20080290072 | Welding torch handle - In accordance with one embodiment, the present technique relates to a welding torch handle that has an unenclosed slot extending from one end thereof. This unenclosed slot provides a mechanism through which insulated signal leads of a conductor can extend from the interior of the handle to connect with a trigger disposed outside the handle. As one advantage, the unenclosed nature of the slot facilitates this coupling without the need for threading of the leads, which can damage the leads. | 11-27-2008 |
| 20080314876 | WELDING SYSTEM AND METHOD HAVING CONTROLLED LINER CONTOUR AND WELDING WIRE CURVATURE - A welding system, in certain embodiments, includes a torch having a neck with an arcuate portion, and a resilient jump liner disposed in the neck and extending through the arcuate portion. The resilient jump liner includes a pathway having a curvature configured to bend a welding wire passing through the pathway. The system also includes an annular support disposed about the resilient jump liner inside the neck, wherein the annular support is configured to at least substantially fix the curvature to force the welding wire to achieve a wire curvature. The system also includes a contact tip coupled to the neck, wherein the wire curvature is configured to bias the welding wire into substantially consistent contact with an interior pathway through the contact tip. | 12-25-2008 |
| 20090020510 | Method for electric arc joining - A method for electric arc joining, in particular for arc welding and/or arc soldering, under protective gas using the method of T[ungsten] l[nert] G[as] joining, in particular TIG welding and/or TIG soldering, at least one gas mixture having the composition essentially argon and/or helium and carbon dioxide in a proportion range from approximately 0.2 volume-percent (vol.-%) to approximately 0.7 vol.-% being supplied as the protective gas, as well as a corresponding protective gas, in such a manner that weld pool movements, electric arc turbulence, and occurrences of wear of the T[ungsten] l[nert] G[as] electrode may be reliably avoided. The protective gas also has hydrogen in a proportion range from approximately 1.8 vol.-% to approximately 9 vol.-%. | 01-22-2009 |
| 20090026173 | METHOD AND APPARATUS FOR WELDING AN ARTICLE - Disclosed is a method for welding an article, the method including the steps of placing the article in an enclosure with walls that enclose the article on all sides, the enclosure having a heating device associated therewith, the heating device configured and sized to uniformly heat the article over at least a substantial entirety of the article, establishing a nonreactive atmosphere in the enclosure, operating the heating device to uniformly heat the article in the enclosure to a welding temperature over at least the substantial entirety of the article, and welding the article in the enclosure while maintaining the welding temperature over at least the substantial entirety of the article. | 01-29-2009 |
| 20090050606 | Changeable welding head assembly - A welding head assembly for use with a torch. The torch has an electrical contact and a gas passage for operatively supporting an electrode with a working end of the electrode at a first location. The welding head assembly has a body, a gas flow path, a gas outlet, an electrical flow path, and an electrode. The body extends between a first end and a second end where the first end is releasably coupled to the torch. The gas flow path and electrical flow path extend between the first and the second end. The electrode is located at the second end remote from the first location. | 02-26-2009 |
| 20090071942 | METHOD AND APPARATUS OF WELDING WITH ELECTRICAL STICKOUT - A method of welding includes continuously passing a MIG electrode through a welding tip and nozzle of a welding gun, where a stickout distance of the MIG electrode is maintained in the range of about 1¼ to about 2 inches during welding. Further, a length of the nozzle of the welding gun is such that a distance between the end of the nozzle of the end of the electrode is about ¼ inch to about ¾ inch. | 03-19-2009 |
| 20090107958 | Torch and Contact Tip for Gas Metal Arc Welding - A torch for gas metal arc welding includes a torch housing and a contact tip mounted on the housing and having an electrode bore through which electrode wire is fed. A nozzle mounted on the housing surrounds the contact tip to define an annular gas passage between the contact tip and the inside of the nozzle. A shielding gas inlet communicates a shielding gas into the annular gas passage so that the shielding gas flows out of the nozzle. A plurality of auxiliary flow passages are provided in the contact tip, and have open ends arranged around the electrode bore. The auxiliary flow passages communicate with the gas inlet and surround the electrode wire with an auxiliary flow of shielding gas that is closer to the electrode wire than the shielding gas flow that is provided through the annular gas passage between the contact tip and the nozzle. | 04-30-2009 |
| 20090107959 | Arc Welding Initiation System and Method - A method and apparatus for controlling arc shielding gas during an arc welding operation is disclosed. The method may include the steps of actuating a first valve connected to an arc initiation source of gas to selectively allow arc initiation gas to flow through a mixing chamber; initiating an arc; actuating a second valve connected to a primary shielding source of gas to selectively allow primary shielding gas to flow through the mixing chamber; actuating the first valve to reduce, if needed, the arc initiation gas flow from the arc initiation source of gas; and continuing with the arc welding operation. The arc welding operation may also include actuating the first valve to cause the arc welding operation to operate in a different metal transfer mode when it is desirable, or when the arc welding operation is nearing completion. | 04-30-2009 |
| 20090107960 | Welding Stability System and Method - A weld stability system for an arc welding apparatus and method of operation is disclosed. The weld stability system may comprise a shielding gas supply and a control assembly. The shielding gas supply may include a first source of gas, a second source of gas, a mixing chamber, a first valve selectively connecting the first source of gas to the mixing chamber, a second valve selectively connecting the second source of gas to the mixing chamber, and a shielding gas supply line configured to direct gas from the mixing chamber to a weld gun. The control assembly may include a controller operatively engaging the first and second valves, and at least one sensor configured to monitor a parameter of an arc welding process and communicate with the controller. | 04-30-2009 |
| 20090145884 | FORMING DEVICE AND METHOD FOR FORMING - In order to additionally develop a forming device for delivering at least one root shielding gas to the root side of at least one region to be joined of at least one object, as well as a corresponding method, such that discolorations and the formation of coatings on the object to be joined are effectively prevented, the invention proposes that the delivered root shielding gas is directed, and guided or deflected in the direction along the root side of the region to be joined. | 06-11-2009 |
| 20090188896 | GMAW System Having Multiple Independent Wire Feeds - A gas metal arc welding system comprising, and a method of welding a plurality of workpieces utilizing, a plurality of individually selectable and separately controlled wire feeds, wherein the feeds preferably present differing wire diameters and compositions and predetermined wire contributions are combined during welding so as to present a weld pool and joint having aggregate properties. | 07-30-2009 |
| 20090206060 | Arc Welding Torch And Method Of Using Same - The present invention relates to a welding torch that includes an electrode ( | 08-20-2009 |
| 20090230094 | Open-top welding chamber - A novel type of welding chamber for welding refractory metals such as titanium, that is open on the top rather than completely enclosed like other welding chambers is disclosed. Pressurized argon, an inert gas, is introduced into the bottom chamber of the device through a diffuser. The argon is then forced to travel upward through a gas-permeable welding bed formed above the accumulation chamber, the welding bed made from a conductive and gas-permeable material. The present invention creates an argon cloud of substantially 100% argon for welding titanium and other refractory metals therein. The argon cloud is constrained by a curtain barrier and the property that argon is heavier than air. The argon cloud substantially stays in place when not disturbed by movement of air above it. Workpieces are placed into the argon cloud and onto the welding bed to be welded. | 09-17-2009 |
| 20090236319 | METHOD FOR JOINING OBJECTS - A method for joining at least two objects by a joining means selected from resistance welding, resistance soldering and a magnetically impelled arc, in which the objects are brought into contact with one another in the area to be joined, such that the objects are joined to one another in a particularly stable and/or particularly homogenous fashion and oxidation of the area to be joined is reliably prevented. The respective base metal of the objects is fused at least in the contact area, and in that at least one inert gas and/or at least an inert gas mixture is supplied at least to the contact area of the objects such that the fusing of the respective base metal takes place under an inert gas atmosphere. | 09-24-2009 |
| 20090236320 | METHOD FOR TANDEM GAS METAL ARC WELDING, AND WELDING TORCH AND WELDING APPARATUS USED THEREFOR - The present invention provides a method for tandem gas metal arc welding using a leading electrode and a trailing electrode, wherein a shielding gas for the leading electrode is a two-component mixed gas containing argon and carbon dioxide, or a three-component mixed gas containing argon, carbon dioxide, and oxygen; a shielding gas for the trailing electrode is argon, a two-component mixed gas containing argon and carbon dioxide, a two-component mixed gas containing argon and oxygen, or a three-component mixed gas containing argon, carbon dioxide, and oxygen; and the concentration of carbon dioxide in the shielding gas for the trailing electrode is lower than the concentration of carbon dioxide in the shielding gas for the leading electrode. | 09-24-2009 |
| 20090277877 | APPARATUS AND METHOD FOR WELDING OBJECTS - An apparatus and method for welding objects having a butt joint includes providing at least one welding torch, providing a fixture to hold at least one object to be welded, moving the at least one welding torch over the butt joint, heating the butt joint with the at least one welding torch, forming a bridge across a gap of the butt joint from heated parent material of the at least one object in a first welding operation, moving the at least one welding torch over the butt joint, and filling the gap of the butt joint with a filler material being fused with the bridge of the butt joint in a second welding operation to weld the butt joint together. | 11-12-2009 |
| 20090277878 | Insertion element, gas lens with such an insertion element, and welding torch with such a gas lens - The invention relates to an insertion element ( | 11-12-2009 |
| 20100006545 | Welding of Pipeline to Enhance Strain Performance - A method and apparatus utilized in forming weld joint is described. In the method, a strength weld between two members is formed by a first welding process and a first weld metal. Then, one or more strain welds are formed by depositing a second weld metal adjacent to the strength weld using a second welding process. The strain welds are configured to form a weld joint having a specific minimum height and width to handle tensile strain to a specific strain capacity. | 01-14-2010 |
| 20100025380 | WELDING TORCH INCLUDING A CONVEX OPEN-WORK GRID FOR ENLARGING THE JET OF GAS - The invention relates to a welding torch comprising a torch body that is elongate along a longitudinal direction and that presents a working end, an electrode having a portion that projects longitudinally from the working end, and a channel for a flow of protective gas formed inside the body and terminating at the working end via at least one opening for ejecting gas in the form of a jet towards the projecting portion of the electrode. According to the invention, the torch includes jet-enlarger means for enlarging the jet of gas, which jet-enlarger means are in the form of a convex open-work grid covering the gas ejection opening(s). | 02-04-2010 |
| 20100025381 | METHOD FOR ARC JOINING - A method for arc joining, in particular for M[etal]S[hielding]G[as] welding and/or for M[etal]S[hielding]G[as] soldering of at least one object made of titanium and/or of at least a titanium alloy under shielding gas in the presence of at least one melting electrode, wherein at least an inert gas is supplied as shielding gas in such a manner that the arc burns in a stable and calm manner in response to the arc joining. The shielding gas further includes at least one active gas. | 02-04-2010 |
| 20100038345 | CONSUMABLE ELECTRODE GAS SHIELD ARC WELDING TORCH AND POWER FEED TIP - A consumable electrode gas shield arc welding torch ( | 02-18-2010 |
| 20100044347 | ALUMINUM WELDING OF AIRCRAFT ENGINE COMPONENTS - A porosity free weld is formed at the surface of an aluminum object. The object is enclosed in a welding box that is sealed and purged with an inert gas, and preheated to at least 100° C. Welding of one pass of the weld using a gas-tungsten arc welding method with AC current and shielding gas mixture of argon and helium is followed by removal of the top portion of the bead. The process of preheating, formation of a weld bead and top portion removal are repeated to achieve the desired weld thickness or build-up. | 02-25-2010 |
| 20100059485 | MIG-MIG Welding Process - A method and apparatus for MIG-MIG welding includes at least first and second sources ( | 03-11-2010 |
| 20100065532 | SEALED AND PRESSURIZED GUN FOR UNDERWATER WELDING - An underwater fastener welding apparatus that includes a welding tool positioned within a watertight housing. The housing includes an inlet coupled to a source of pressurized gas. The housing is pressurized to balance a pressure internal to and external to the housing when the underwater welding apparatus depth level is changed. | 03-18-2010 |
| 20100089877 | WELDING METHOD USING WELDING MATERIAL HAVING LOW TRANSFORMATION TEMPERATURE - An arc welding method using a welding material having a low transformation temperature, characterized in that it is carried out by the use of a shielding gas consisting of a rare gas alone or a mixed gas of a rare gas and a small amount of an oxygen gas; and an additional welding method using a welding material having a low transformation temperature, characterized in that it is carried out while moving a weld line in the form of a straight line. The former method allows the enhancement of a Charpy value in combination with improved fatigue strength, and the latter allows the experience of heat history of the material having a low transformation temperature to be suppressed, resulting in the prevention of weld crack in combination with an improved fatigue strength. | 04-15-2010 |
| 20100096366 | FLEXIBLE PROTECTIVE GAS COVER - A joining device for joining a component to a workpiece. The device includes a component holder which moves the component along an axis in a first direction towards the workpiece in order to connect the component to the workpiece, and has a protective gas feed in order to carry out a welding process in a protective gas atmosphere. During the welding process the protective gas is discharged essentially in a second direction which is opposed to the first direction. An elastic sealing sleeve including folding bellows is arranged in relation to the component holder in such a way that a welding space, which is bounded by the workpiece, the component holder, the component and the sealing sleeve and through which the protective gas flows, is sealed off from the external surroundings during the welding process so that the protective gas can escape only in the second direction. | 04-22-2010 |
| 20100102037 | MIG- OR MAG-WELDING GUN - The invention relates to a MIG- or MAG-welding gun, comprising a hand-held grip for supporting, handling and aiming the welding gun during a welding process, the grip including a body member ( | 04-29-2010 |
| 20100108645 | DEVICE AND METHOD FOR AUTOMATIC UNDERWATER WELDING FOR MAKING A WELDING JOINT ON A SURFACE - The invention relates to a device for automatic under-water welding for making a welding joint ( | 05-06-2010 |
| 20100108646 | Method For Arc Welding With Consumable Electrode - Methods for arc welding unalloyed or low-alloy steels with consumable electrode under protective gas are suggested, in which the protective gas is a mixture comprising at least helium and an active gas as well as a further inert gas. In the general case, the proportion of the active gas in the total volume of the protective gas is to be in the range from more than 0.5% to approximately 1,5% and the proportion of helium in the total volume of the protective gas is to be more than 30%. In case an electrode having a lowered or medium Si content of approximately 0.2% to approximately 0.4% is used, the proportion of the active gas in the total volume of the protective gas is to be approximately 1% to approximately 5%. If an electrode with a low Si content of approximately 0.05% to approximately 0.1% is used, the proportion of the active gas in the total volume of the protective gas is to be approximately 3% to approximately 10%. | 05-06-2010 |
| 20100133240 | Consumable Electrode-Based Gas-Shielded Arc Welding Method and Welding Torch Therefor - A method of consumable electrode type gas shield arc welding characterized in that a shield gas consisting of an inert gas is fed toward a consumable electrode and an addition gas consisting of a mixture of oxidizing gas and inert gas toward an outer edge of welding pool. Further, there is provided a welding torch for use in the method. Thus, in the welding of steel material in accordance with GMA welding technique, the dissolved oxygen concentration of the weld metal can be reduced to 100 ppm or less, and while maintaining arc stability, desirable bead formation can be attained. | 06-03-2010 |
| 20100170878 | SYSTEM, METHOD, AND APPARATUS FOR REPAIR OF COMPONENTS - A method is disclosed including operations for repairing a component. The method includes providing a component including one of titanium and a titanium alloy, providing a laser deposition device, and providing a shielding means that ensures an oxygen content remains below a first threshold and that a water vapor content remains below a second threshold in a target area of the component. The method further includes depositing a metal material on the component, where the depositing includes operating the deposition device along a tool path including a plurality of tool passes, wherein the tool path further comprises a deposition device velocity specification, a laser power specification, and a specified delay time between each of the plurality of tool passes. | 07-08-2010 |
| 20100176092 | ARRANGEMENT AND METHOD FOR BLANKET GAS SUPPLY CONTROL FOR AN ELECTRICAL WELDING APPARATUS - Apparatus and method for controlling blanket gas flow in an electrical welding facility, wherein welding is performed using a welding electrode in electrical connection with a welding machine unit. The apparatus includes an electric measuring device having a current sensor for determining the magnitude of an electrical welding current carried in a circuit incorporating the welding electrode and having a current sensor output adapted to provide a I signal indicating the current magnitude, and a voltage sensor for determining the magnitude of electrical voltage applied to the welding electrode and having a voltage sensor output for providing a U signal indicating the voltage magnitude, and a control device having inputs connected to the current sensor output and the voltage sensor output, respectively, and a control signal output for providing a control signal to a blanket gas flow controller. | 07-15-2010 |
| 20100181292 | METHOD AND APPARATUS FOR AUTOMATED APPLICATION OF HARDFACING MATERIAL TO ROLLING CUTTERS OF HYBRID-TYPE EARTH BORING DRILL BITS, HYBRID DRILL BITS COMPRISING SUCH HARDFACED STEEL-TOOTHED CUTTING ELEMENTS, AND METHODS OF USE THEREOF - The present invention relates to a system and method for automated or “robotic” application of hardfacing to the surface of a steel-toothed cutter of a standard earth-boring rock bit or a hybrid-type rock bit. In particular, the system incorporates a grounded adapter plate and chuck mounted to a robotic arm for grasping and manipulating a rock bit cutter, particularly a hybrid rock bit cutter, beneath an electrical or photonic energy welding source, such as a plasma arc welding torch manipulated by a positioner. In this configuration, the torch is positioned substantially vertically and oscillated along a horizontal axis as the cutter is manipulated relative along a target path for the distribution of hardfacing. Moving the cutter beneath the torch allows more areas of more teeth to be overlayed, and allows superior placement for operational feedback, such as automatic positioning and parameter correction. In the preferred embodiment, sensors provide data to the control system for identification, positioning, welding program selection, and welding program correction. The control system, aided by data from the sensors, manipulates the robotically held cutter while controlling the operation and oscillation of the torch. These systems and methods can be applied to hardfacing steel teeth of the rolling cutters of both standard tri-cone or di-cone type rolling cone bits, as well as to hybrid-type earth boring drill bits. | 07-22-2010 |
| 20100193476 | Inert gas tube and contact tube of an apparatus for improved narrow-gap welding - An apparatus for improved narrow-gap welding is provided. The apparatus includes an inert gas tube within which a contact tube is arranged, the contact tube includes a wire feed for a melting wire. In one embodiment, the inert gas tube includes a plurality of cooling tubes in order to provide active cooling. In another embodiment, the inert gas tube is rectangular. | 08-05-2010 |
| 20100193477 | Inert Gas Tube and Contact Tube of an Apparatus for Improved Narrow-Gap Welding - An apparatus for improved narrow-gap welding is provided. The apparatus includes an inert gas tube within which a contact tube is arranged, the contact tube includes a wire feed for a melting wire. The end of the inert gas tube is ceramic. In another embodiment, the inert gas tube of the apparatus includes a plurality of materials with a high thermal conductivity. A first metallic material at the end of the inert gas tube has a higher thermal conductivity than a second material at a start of the inert gas tube. The first metallic material is molybdenum, tungsten, an alloy of molybdenum or tungsten, or copper or a copper alloy. | 08-05-2010 |
| 20100230389 | WAVEFORM CONTROL IN DRAWN ARC FASTENER WELDING - A drawn arc welding process that includes the steps of a) providing a welding device having a fastener, b) providing a power supply and controller linked with the welding tool, c) providing a work piece, d) energizing a main welding current in the welding tool locally melting the workpiece and forming a weld pool, e) changing the energizing current to a predetermined plunge current, and f) plunging the fastener into the locally melted workpiece at the predetermined plunge current forming a weld between the fastener and the work piece. | 09-16-2010 |
| 20100270269 | WELDING APPARATUS AND METHOD OF WELDING - A welding apparatus for welding a work piece is provided that has a weld gun with a nozzle body having an inner surface defining a cavity, and a distal opening forming a nozzle orifice. An electrode extends in the cavity and is configured to be positionable proximate the work piece. The weld gun is configured to provide a flow of shielding gas through the nozzle orifice. The welding apparatus is configured to position the nozzle orifice at a distance from the work piece sufficient to cause the inner surface to direct weld spatter to a weld pool on the work piece adjacent the nozzle. Additionally, the distance is such that laminar flow of the shielding gas is maintained under the predetermined gas flow rate. | 10-28-2010 |
| 20100270270 | SHIELD - Provisions of shields for protecting welds as well as providing heat treatments are advantageous. Previously such shields were bespoke constructions produced iteratively and empirically for particular applications and uses. By utilisation of accurately cut sheets of material within which labyrinths are created it is possible to produce an output flow which is even and incorporates no vortexes. In such circumstances problems with regard to edge entrainment of oxygen causing possible oxidation problems in output flows as well as variations in heat treatments can be avoided. The shield also avoids use of welds which may become distorted during welding or heat treating processes. For reproducibility the shield is formed from accurately produced reproducibility components such that shields can be made at a number of sites to provide the same shield function. | 10-28-2010 |
| 20100276396 | APPARATUS AND METHOD FOR WELDING - The present invention relates to arc welding torch and a method of extracting fume gas from a welding site. The torch comprises a metal electrode and at least one shield gas port adapted to direct a shield gas curtain around the metal electrode and a welding site. At least one shroud gas port is spaced radially outward from the shield gas port and adapted to impart to an exiting shroud gas a radially outward component of velocity. Fume gas is preferably extracted from a position radially intermediate the shield gas curtain and the shroud gas curtain. | 11-04-2010 |
| 20100276397 | ELECTRICALLY ISOLATED GAS CUPS FOR PLASMA TRANSFER ARC WELDING TORCHES, AND RELATED METHODS - Electrically isolated gas cups for plasma transferred arc welding torches, plasma transferred arc welding torches including such gas cups, and related methods are disclosed. In one embodiment a gas cup includes a dielectric portion sized and configured to couple with a torch body and electrically isolate the gas cup from the torch body. In additional embodiments, a plasma transferred arc welding torch includes an anode, a cathode, a torch body coupled to the anode and the electrode, and a gas cup at least partially surrounding the anode and electrically isolated from the torch body. In further embodiments, a method of coupling a gas cup to a plasma transferred arc welding torch includes coupling a dielectric structure to a gas cup and coupling the dielectric structure to a torch body to electrically isolate the gas cup from the torch body. | 11-04-2010 |
| 20100276398 | SHIELDING GAS FLOW CONTROLLER FOR A WELDING APPARATUS - A shielding gas (SG) flow controller for an arc welder includes SG input/output with a controllable valve therebetween, and having a control input, and a controller having a first input receiving a welding signal representing arc current and a gas flow setting controller generating a flow setting output based on the welding signal, representing a desired SG flow. Input and output pressure sensors provide SG input and out pressure to second and third controller inputs, respectively. A flow setting output modifier modifies the flow setting output of the gas flow setting controller based on the SG input/output pressure, the welding signal, and a characteristic of the controllable valve into a control signal input to the control input of the controllable gas valve to maintain a substantially constant SG flow corresponding to the flow setting output substantially independent of actual SG input/output pressures. | 11-04-2010 |
| 20100276399 | SPOOL GUN HAVING UNITARY SHIELDING GAS AND WELD POWER CONNECTOR - A spool gun having a quick connector connectable to an electrical power source and a gas source is disclosed. A connection line extends from the spool gun and is attached to a connector. The connector both fluidly connects the spool gun to a shielding gas source and electrically connects the spool gun to a power source constructed to generate a welding-type power. Such a spool gun is quickly and efficiently connectable to the gas and power systems required for performing welding processes. | 11-04-2010 |
| 20100301018 | WELDING CONTROL APPARATUS - Control apparatus for a gas-shielded welding arrangement which includes a monitor for logging welding parameters, a gas surge tank, the volume of which is adjustable to take account of the pressure of a gas-supply source, and a lockable device which prevents unauthorised access to a pressure regulator on the surge tank. | 12-02-2010 |
| 20100320174 | HYBRID LASER ARC WELDING SYSTEM AND METHOD FOR RAILROAD TANK CAR FABRICATION - A system for welding a tub of a railroad tank car includes a manipulator boom adapted to move with respect to the interior surface of the tank shell. A hybrid laser arc welding head mounted to the manipulator. A supplemental gas metal arc welding head includes dual wires of welding material and is mounted to the manipulator adjacent to the hybrid laser arc welding head. An inductive heating coil is mounted adjacent to the supplemental gas metal arc welding head. The hybrid laser arc welding head welds a seam of the railroad tank car shell with the supplemental gas metal arc welding head following to generally complete filling of a resulting weld joint with welding metal. The supplemental gas metal arc welding head is followed with the inductive heating coil to provide heat to normalize the resulting weld joint. | 12-23-2010 |
| 20110011836 | METHOD AND DEVICE FOR PLASMA KEYHOLE WELDING - In response to plasma keyhole welding of a workpiece, in the case of which a plasma jet is generated using an electrode, to which a welding current is applied, and at least one process gas, wherein at least one gas composition ( | 01-20-2011 |
| 20110036815 | INTEGRAL HANDLE - The present invention includes a multi-use welding gun body configured for use in multiple locations along a welding gun assembly. In a particular embodiment, the multi-use welding gun body includes an enclosure forming an exterior surface of the body, the enclosure configured for both receiving a welding wire and a power source and directing the same toward a torch and having a first enclosure end with a wire-receiving aperture extending to an internal block-receiving cavity, the wire receiving aperture shaped to selectively receive a torch and an extension having an orifice containing both welding wire and shielding gas. The block-receiving cavity of the enclosure extends axially with a non-circular profile to a cable-receiving cavity within the housing, the cable-receiving cavity extending longitudinally to the second enclosure end. The second enclosure end includes an aperture forming an end of the cable-receiving cavity. A removable block is positioned within the block-receiving cavity. | 02-17-2011 |
| 20110062120 | Device for welding using a process chamber and welding method - A device and a method for welding a component are provided. The component is arranged and welded in a chamber. A welding appliance is provided, the welding appliance being arranged outside the chamber. | 03-17-2011 |
| 20110073570 | FLUX CORED WIRE FOR GAS SHIELDED ARC WELDING OF HIGH STRENGTH STEEL - The present invention provides a flux cored wire for gas shielded arc welding of high-strength steel having proof stress of 690 MPa or more, which is capable of all-position welding with a higher efficiency and exhibits an excellent cracking resistance. The flux cored wire comprising a steel sheath, and a flux filled therein, wherein the flux cored wire comprises, by mass % with respect to the total mass of the flux cored wire: C: 0.03 to 0.10%, Si: 0.25 to 0.7%, Mn: 1.0 to 3.0%, Ni: 1.0 to 3.5%, B: 0.001 to 0.015%, Cr: limited to 0.05% or less, and Al: limited to 0.05% or less, and in the flux, TiO | 03-31-2011 |
| 20110114606 | HARDFACING MIG-ARC WELDING WIRE AND HARDFACING MIG-ARC WELDING PROCESS - A wire is adopted to hardfacing MIG-arc welding using a pure argon gas as a shielding gas. The wire is a flux-cored wire prepared through drawing a steel hoop or steel pipe as a sheath in which a flux is filled. The flux contains, based on the total mass of the wire, C: 0.12 to 5.00 percent by mass, Si: 0.50 to 3.00 percent by mass, Mn: 0.30 to 20.00 percent by mass, P: 0.050 percent by mass or less, S: 0.050 percent by mass or less, and at least one of TiO | 05-19-2011 |
| 20110132877 | INTEGRATED SHIELDING GAS AND MAGNETIC FIELD DEVICE FOR DEEP GROOVE WELDING - A welding system is provided which can weld in narrow gap thick walled work pieces, the welding system having a magnetic field unit which contains a magnetic coil, a magnetic field probe, and a shielding gas tube and nozzle. The unit having a shape and configuration which delivers the shielding gas and magnetic field close to the welding arc so as to provide for a shielded welding arc which is manipulated as desired by the magnetic field. | 06-09-2011 |
| 20110132878 | HYBRID WELDING METHOD AND HYBRID WELDING APPARATUS - Disclosed is a method for hybrid welding in which a laser beam is applied to the welding position of objects to be welded, and at the same time, a first wire is fed to the welding position so as to perform arc welding using an arc generated between the objects to be welded and the first wire. In this method, one or more second wires are fed to a molten weld pool formed by the laser beam and arc welding, thereby increasing the amount of welding without increasing the arc current. | 06-09-2011 |
| 20110163072 | SYSTEMS AND METHODS FOR STATISTICALLY ANALYZING WELDING OPERATIONS - A welding system including a welding power source including power conversion circuitry adapted to receive primary power and to convert the primary power to a weld power output for use in a welding operation and a controller communicatively coupled to the welding power source are provided. The controller is adapted to determine a statistical signature of at least one parameter of a welding process and to utilize the statistical signature to determine at least one of an electrode type, an electrode diameter, and a shielding gas type during the welding operation. | 07-07-2011 |
| 20110168677 | ELECTRIC WELDING OF ALUMINIUM OR ALUMINIUM ALLOY - Electric welding method is provided of aluminium or aluminium alloy in a magnetic field, the aluminium or aluminium alloy adjacent to a weld joint under formation has an oxide layer, and the free end of a welding wire is supplied with a surrounding shielding gas. Furthermore, a welding wire is used that comprises aluminium or aluminium alloy provided with an oxide-inhibiting coating, which forms the outer covering or sheath of the welding wire and/or that as said shielding gas there is used a shielding gas with oxygen incorporated therein, or that the shielding gas is supplied with oxygen during the welding process. When the process is carried out in a magnetic field, the minimum frequency of the welding current is selected as a function of the strength of the magnetic field. A method is also provided for producing the welding wire and necessary material conditions for a usable welding gun. | 07-14-2011 |
| 20110168678 | METHOD AND APPARATUS FOR WELDING COPPER - A method for welding copper includes steps of spraying an inert gas to copper that is an object to be welded to cover a portion to be welded on the copper with the inert gas, and performing electrical discharge to weld the portion to be welded. The inert gas that covers the portion to be welded passes a dehumidifying process that removes moisture contained in the inert gas. | 07-14-2011 |
| 20110174784 | METHOD FOR GAS-SHIELDED ARC BRAZING OF STEEL SHEET - A method for gas-shielded arc brazing of a steel sheet; wherein a solid wire containing copper, as a main component, and aluminum is used in arc brazing of a steel sheet; and the method including periodically carrying out pulse droplet transfer and short circuit droplet transfer in arc brazing using, as a shielding gas, a mixed gas consisting of 0.03 to 0.3% by volume of oxygen gas and the remainder which is argon. | 07-21-2011 |
| 20110204031 | METHOD, APPARATUS AND USE OF A WATER-BASED DISPERSION FOR AUTOMATED SERVICING OF A WELDING TORCH HEAD - The invention relates to a method and an apparatus for automated servicing of a torch head comprising at least one contact tip and a nozzle surrounding the at least one contact tip. In a first servicing device the torch head is contact-freely cleaned in an assembled state of said at least one contact tip and said nozzle. A second servicing device is used for applying a torch head treatment agent to at least a portion of the surfaces of said at least one contact tip and said nozzle. The operation of the first servicing device and the second servicing device, respectively, is started by a control unit after the torch head has been transferred to a corresponding servicing position. The torch head treatment agent may include between about 5 and about 50 percent-by-weight of boron nitride as a torch head treatment agent for servicing of a welding torch head. | 08-25-2011 |
| 20110220616 | WELDING DEVICE WITH INTEGRAL USER INTERFACE - Welding torch assemblies including a torch body having a user interface module integrally formed therewith, a welding nozzle, and a torch lead assembly are provided. The user interface module may enable a user to control one or more parameters of a welding operation. The welding nozzle may be coupled to a first end of the torch body. The torch lead assembly may be coupled to a second end of the torch body opposite the first end and may include a weld power lead and a weld control lead. | 09-15-2011 |
| 20110240604 | FEEDING LUBRICANT FOR CORED WELDING ELECTRODE - A feeding lubricant for use on a welding electrode comprises about 10 to 40 wt. % of at least one soap-based lubricant, about 40 to 90 wt. % of at least one solid particulate lubricant selected from MoS | 10-06-2011 |
| 20110247999 | WELD ELECTRICAL AND GAS CONNECTOR WITH SEALED GAS FLOW - A weld electrical and gas connector with sealed gas flow is provided. In an exemplary embodiment, a welding cable connector system includes a male connector having a conductive body for conveying welding power. The male connector includes a sealed passageway disposed coaxially of the conductive body for conveying shielding gas, and a gas sealing valve configured to seat to stop flow of shielding gas when the male connector is not engaged. The system also includes a female connector having a conductive body for conveying welding power. The female connector includes a sealed passageway disposed coaxially of the conductive body for conveying shielding gas, and a gas sealing valve configured to seat to stop flow of shielding gas when the female connector is not engaged. The male and female connectors are mutually engageable to conduct welding power and shielding gas therethrough. | 10-13-2011 |
| 20110248000 | SYSTEM AND METHOD OF REDUCING DIFFUSIBLE HYDROGEN IN WELD METAL - This disclosure relates generally to arc welding. In an embodiment, a welding system has a welding gas supply system configured to supply a gas flow including a shielding gas and a fluorine-containing gas to a weld pool. Furthermore, the shielding gas is configured to control an atmosphere surrounding the weld pool, the fluorine-containing gas is configured to reduce diffusible hydrogen in the weld pool, and the fluorine-containing gas is substantially free of sulfur. | 10-13-2011 |
| 20110253679 | HIGH-CURRENT-DENSITY GAS-SHIELDED ARC WELDING - Disclosed is a method for performing gas-shielded pulsed arc welding at high current densities with a flux-cored wire as an electrode wire. The pulsed arc welding is carried out by passing a pulsed current so that a pulse peak current density during a pulse peak time Tp is 400 to 950 A/mm | 10-20-2011 |
| 20110259853 | CONSUMABLE-ELECTRODE GAS-SHIELD ARC WELDING METHOD AND CONSUMABLE-ELECTRODE GAS-SHIELD ARC WELDING SYSTEM - In consumable-electrode gas-shield arc welding, carbon dioxide gas is used as shield gas; the molten pool is formed using a pulsed arc as a leading electrode arc transferring one droplet per cycle by alternately outputting, in each cycle, pulses of two different pulse waveforms of which a pulse peak current level and/or a pulse width per period differ; the conductively heated filler wire is inserted into the molten pool as a trailing electrode; the distance between a tip of the filler wire inserted into the molten pool and a conductive point of the filler wire is set within a range of 200×10 | 10-27-2011 |
| 20110284500 | WELDING GAS LEAK DETECTION SYSTEM AND METHOD - A method and system for detecting a welding gas leak is provided. One welding power supply includes a gas valve configured to control the flow of shielding gas to a welding device through a gas line. The welding power supply also includes a sensor coupled to the gas line and configured to detect a parameter of the shielding gas. The welding power supply includes control circuitry coupled to the gas valve and to the sensor, and configured to control the operation of the gas valve, and to receive device value representative of the detected parameter. The control circuitry is further configured to determine a leak test result based upon the parameter value, and to provide an operator indicator of the leak test result. | 11-24-2011 |
| 20120006792 | BATTERY POWERED WELDING SYSTEM - A battery powered welding system is provided. In one welding system a battery powered welder includes control circuitry configured to control a welding power output converted from power from an external battery power source. The battery powered welder also includes a wire drive assembly coupled to the control circuitry and configured to feed a welding wire using power from the external battery power source. The battery powered welder includes a case integrally supporting and enclosing the control circuitry and the wire drive assembly. The case is not configured to enclose the external battery power source. | 01-12-2012 |
| 20120012560 | Torch Flow Regulation Using Nozzle Features - A nozzle for a plasma arc torch includes a body having a first end and a second end. The nozzle also includes a plasma exit orifice located at the first end of the body. A flange is located at the second end of the body. The flange is adapted to mate with a corresponding consumable. The flange is configured to selectively block at least one gas passage in the corresponding consumable to establish a gas flow relative to the nozzle body. | 01-19-2012 |
| 20120018405 | Protective gas tube and contact tube of a device for improved narrow-gap welding - An apparatus for narrow-gap welding is provided. The apparatus includes an inert gas tube and a contact tube which is arranged in the inert gas tube. The contact tube includes a wire feed for a melting wire. The contact tube has an end with an end face and a longitudinal axis, wherein the longitudinal axis forms an angle other than 90° with the end face of the end. In a further embodiment, the contact tube has a contact nozzle at the end and a jacket surface, wherein one end of the contact nozzle does not project beyond an imaginary extension of the jacket surface in the longitudinal direction of the contact tube. | 01-26-2012 |
| 20120055903 | FLUX-CORED WELDING WIRE AND METHOD FOR ARC OVERLAY WELDING USING THE SAME - To provide a flux-cored welding wire and a method for arc overlay welding attaining excellent weldability and low dilution ratio and obtaining a weld bead excellent in corrosion resistance in overlay welding using the flux-cored welding wire having an advantage of high deposition rate and deposition efficiency. The flux-cored welding wire for gas shielded arc welding including flux filled up in an outer sheath and using pure Ar as a shielding gas contains, as percentage to the total mass of the flux-cored welding wire, C: 0.20 mass % or below, Si: 15.00 mass % or below, Mn: 20.00 mass % or below, P: 0.0500 mass % or below, S: 0.0500 mass % or below, and Cr: 15.0-50.0 mass %, with the remainder being Fe and inevitable impurities. | 03-08-2012 |
| 20120152909 | TUNGSTEN INERT GAS WELDING TORCH WITH IMPROVED AIR COOLED HANDLE - Embodiments of a tungsten inert gas (TIG) welding torch with an improved air cooled handle are provided. The welding torch may include a body, a cable assembly, and a torch head, with a handle placed over the body and the cable assembly. The handle may feature a curved end designed to fit near the torch head without contacting the torch head, providing a closer gripping point to allow greater control of the torch. In addition, the handle may be spaced from the body and the cable assembly to form an air space within the handle through which air may flow to cool the handle. | 06-21-2012 |
| 20120175350 | INTEGRATED FLOW METER - A device for supplying a shielding gas to a welding torch, the device including a cylinder | 07-12-2012 |
| 20120187094 | WELDING METHOD AND WELDING APPARATUS - An arc welding apparatus disclosed in this specification includes: first electrode; second electrode; and a first gas supply unit which supplies a first shielding gas from the circumference of a base material-side portion of an arc region formed between the first electrode and a base material connected to the second electrode toward the center of the arc region, and controls the ratio of the pressure outside the arc region to the pressure at the center of the arc region to within the range of 70 to 5000. | 07-26-2012 |
| 20120199560 | WELDING DEVICE AND CARBON DIOXIDE GAS SHIELDED ARC WELDING METHOD - A welding device includes a power supply circuit for applying a voltage across a torch and a base metal, and a power supply control device. The power supply control device controls the power supply circuit such that a high level current is output during a first arc period Ta | 08-09-2012 |
| 20120205346 | WELDING WIRE, USAGE OF WELDING WIRE AND METHOD OF MANUFACTURING POWER TOWER - A welding wire is provided with a hollow section for accommodating flux. The flux has a composition including: Mn:5-20%, Si:1-5%, TiO2:5-25%, SiO2:0.1-10%, Mo:0.1-5% by weight, the balance being iron. When welding low alloy high strength steel by using the welding wire, the slag on the welding bead can be easily cleaned and a smooth surface can be formed on the welding bead which makes it easier to galvanize a zinc layer over the surface of the welding bead. The welding wire provides better welding operation performance and generates less welding spatters. | 08-16-2012 |
| 20120211471 | METHOD AND SYSTEM FOR RETREADING TRACK WHEEL - A wheel resurfacing method and system for resurfacing a worn track wheel to its original profile are provided. The system comprises a support for maintaining the worn railway wheel, a welding device, a controller, and a surface processing device. The worn railway wheel's circumferential surface defining a flange and a tread surface is reconstituted using a welding material. The welding device and the worn railway wheel rotate one relative to the other at a predetermined rate to adaptively aggregate annular welding beads along the circumferential surface to form a curvilinear profile slanted away from the flange. A surface processing device is then actuated to smooth the welded layer to form a substantially uniform surface to reconstitute the worn railway wheel to its original profile. | 08-23-2012 |
| 20120228271 | HOSE ASSEMBLY AND COUPLING DEVICE FOR A WELDING DEVICE - The invention relates to a hose assembly ( | 09-13-2012 |
| 20120248069 | SYSTEMS AND METHODS FOR USING FLUORINE-CONTAINING GAS FOR SUBMERGED ARC WELDING - This disclosure relates generally to welding, and more specifically, to submerged arc welding (SAW). In an embodiment, a welding system includes a gas supply system configured to provide a fluorine-containing gas flow. The system also includes a wire supply system configured to provide welding wire, and a flux supply system configured to provide flux near a welding arc during submerged arc welding (SAW). The system further includes a welding torch assembly configured to receive the fluorine-containing gas flow and the welding wire and to deliver the fluorine-containing gas flow and the welding wire near the welding arc during the SAW. | 10-04-2012 |
| 20120261388 | SYSTEMS AND DEVICES FOR POWER COMMUTATION IN WELDING TORCHES - A welding torch includes an electrical commutation device configured to receive welding power. The electrical commutation device is also configured to transfer the welding power between a welding power input and welding wire before the welding wire passes through a guide device that directs the welding wire out of the welding torch. | 10-18-2012 |
| 20120273467 | DUAL GAS LASER CUTTING OF MEDICAL DEVICES - A system prevents oxidation of a laser cut workpiece by utilizing a laser source that utilizes laser source with an inert gas, such as argon or helium, rather than air or oxygen, to create the slots or kerfs which form the pattern cut into the workpiece. The system introduces oxygen gas through the workpiece as it is being laser cut to oxidize any slag or dross created during the laser cutting process. Oxygen or a mixture of oxygen with other gases cools the slag and the workpiece while at the same time oxidizing the slag to either completely burn or partial burn the slag before it strikes an exposed surface of the tubular member. | 11-01-2012 |
| 20120279945 | DIRECT CURRENT STEAM PLASMA TORCH AND METHOD FOR REDUCING THE EROSION OF ELECTRODES THEREOF - A DC steam plasma torch includes front, middle and rear sections. The front section includes a first amount and a first electrode attached to the first amount, thus defining co-axial first internal and external coolant channels. The middle section includes a second mount and a second electrode co-axially connected to the second mount, thus defining co-axial second internal and external coolant channels. The rear section includes an insulating transient element connected to the second electrode, a window frame connected to the insulating transient element and a window provided in the window frame. A first swirl generator is provided between the first and second sections to receive primary working gas and generating a swirl in the same. A second swirl generator is provided between the middle and rear sections to receive auxiliary working gas and generating a swirl in the same. | 11-08-2012 |
| 20120285932 | WELDING TORCH - A welding torch includes: a first tip body to which a welding wire, gas, and current having passed through a torch body is supplied; a first tip provided at a distal end of the first tip body to supply electric current having passed through the first tip body to the welding wire; an insulating bushing provided inside the nozzle, on the outer periphery of the first tip body; a second tip body to which electric current from a power source is supplied; and a second tip provided at the distal end of the second tip body to supply the current having passed through the second tip body to the welding wire. The first tip and the second tip are axially arranged at a predetermined distance and supply electric current to the welding wire. | 11-15-2012 |
| 20120298629 | WELDING SYSTEM AND METHOD - A welding system having a welding gun with a contact tip having an bore extending therethrough and a consumable weld wire. The cross-sectional shape of the bore of the contact tip being is essentially identical to the cross-sectional shape of the weld wire. The bore having an essentially elliptical cross-sectional shape and the weld wire having an essentially elliptical cross-sectional shape. | 11-29-2012 |
| 20120312788 | LASER MACHINING EQUIPMENT HAVING A COMMON GAS SOURCE FOR THE LASER OSCILLATOR AND HEAD - The invention relates to a laser machining equipment including a laser oscillator ( | 12-13-2012 |
| 20130015163 | STUD WELDING SYSTEM, CONSUMABLES, AND METHOD - A stud welding process may be performed by a power supply that is adapted for other welding processes, such as MIG, TIG, and so forth. A stud welding gun may receive studs preloaded in a magazine or other support. Studs are charged into the chuck of a stud welding gun and positioned where desired over a surface. An extension, such as a wire-type electrode may extend from the stud and aid in establishing the welding arc. The stud may be shielded by a nozzle or other shield to obviate the need for ceramic ferrules. Orientation of the stud welding gun may be detected, displayed and used as a basis for initiating and completing the stud welding process once the gun and/or stud is properly positioned. | 01-17-2013 |
| 20130020287 | METHOD FOR STARTING AND STOPPING A PLASMA ARC TORCH - A method of starting a plasma arc torch is provided that includes directing a pre-flow gas and a start shield gas through the plasma arc torch during generation and transfer of a plasma arc, and switching from the pre-flow gas to a plasma gas, and switching from the start shield gas to a primary shield gas after transfer of the plasma arc to a workpiece. A method of stopping a plasma arc torch is also provided that includes directing a plasma gas and a primary shield gas through the plasma arc torch during steady-state operation, and switching from the primary shield gas to a stop shield gas during ramp down of an operating current. | 01-24-2013 |
| 20130043220 | AIR-CARBON ARC SYSTEM AND APPARATUS FOR DETECTING AND/OR REDUCING IRREGULARITIES IN A WORK PIECE SURFACE AND METHOD OF USING THE SAME - An air-carbon arc system for reducing irregularities in a work piece surface including a control box, a torch head operationally connected to the control box and configured to cooperate with the work piece to generate an arc, and a pendant operationally connected to the control box and having a means for reducing irregularities in the work piece surface. | 02-21-2013 |
| 20130068729 | Method and Apparatus for Microplasma Spray Coating A Portion of a Compressor Blade in a Gas Turbine Engine - A method and apparatus for microplasma spray coating a portion of a substrate, such as a gas turbine compressor blade, without masking any portions thereof. The apparatus includes a microplasma gun with an anode, cathode, and an arc generator for generating an electric arc between the anode and cathode. An arc gas emitter injects inert gas through the electric arc. The electric arc is operable for ionizing the gas to create a plasma gas stream. A powder injector injects powdered material into a plasma stream. A localized area of the compressor blade is coated with the powdered material without having to mask the compressor blade. | 03-21-2013 |
| 20130098878 | Hybrid Arc/Laser-Welding Method For Aluminized Steel Parts Using Gammagenic Elements And A Gas Containing Less Than 10% Of Nitrogen Or Oxygen - The invention relates to a hybrid laser/arc-welding method using an electric arc and a laser beam that are combined together within a single welding melt to which molten metal is supplied by melting a filler wire, wherein the welding melt is provided on at least one steel part including an aluminum surface coating, and a protective gas is used, characterized in that the filler wire contains at least 3 wt % of one or more gammagenic elements, in particular the gammagenic elements selected from C, Mn, Ni and N, and the protective gas consists of helium and/or argon with the addition of at least 10 vol % of nitrogen or oxygen. The method of the invention is particularly suitable for welding end-welded flanks used in the field of manufacturing automobiles or for tube welding. | 04-25-2013 |
| 20130105445 | Method For Arc-Welding Aluminum-Coated Metal Parts Using An Inert Gas Containing Nitrogen | 05-02-2013 |
| 20130105446 | Hybrid Arc/Laser-Welding Method For Aluminized Steel Part Using A Gas Including Nitrogen And/Or Oxygen | 05-02-2013 |
| 20130112660 | WELDING TORCH WITH GAS FLOW CONTROL - An arc system is described which includes a power generator, a shielding gas source, a torch and a shielding gas monitor contained adjacent to or within the torch. The torch is connected to the power generator for producing an arc with a workpiece, is connected to the shielding gas source for providing shielding gas to an arc locations, and includes a flow sensor mounted within or adjacent the torch body for monitoring the flow of shielding gas through the torch and optimally providing feedback control of the shielding gas flow. | 05-09-2013 |
| 20130112661 | RAPID CHANGE MIG NOZZLE CONFIGURATIONS AND RELATED METHODS - A rapid change nozzle apparatus includes a nozzle member and a seat or base member wherein the nozzle member may be quickly and easily manually selectively connected with and/or detached from the seat or base member in order for maintenance personnel or operators of an associated welding system to conveniently replace the nozzle as necessary or desired without significant down-time impact relative to the underlying welding processes. The nozzle member is supported relative to the base or seat member by a set of pin members extending from the base member and received in longitudinal and circumferential grooved in the nozzle member body, and by the biasing influence of a spring member disposed between the nozzle member and the base member whereby the spring urges the nozzle member into relative separation from the base member and into contact with the locating pin members. | 05-09-2013 |
| 20130112662 | MIG/MAG Welding of Carbon Steel with Rotating Arc and Ar/He/O2 Gas Mixture - The invention relates to a ternary gaseous mixture formed from argon, helium and oxygen, characterized in that it is formed from between 19.5 and 20.5% of helium, between 2.7 and 3.3% of Oi, and argon for the remainder (volume %), and to the use thereof as gaseous protection in a method of electric arc welding of at least one steel part to carbon, using a fusible filler wire. Preferably, the welded parts overlap or cover each other and the rotary arc welding takes place where the parts overlap. | 05-09-2013 |
| 20130112663 | Method For Arc-Welding Aluminum-Coated Metal Parts Using Oxidizing Gas - The invention relates to an electric arc welding method for welding at least one metal part including an aluminum based surface coating, using a shielding gas. According to the invention, the metal of the aforementioned metal part is melted by the electric arc alone without the use of any laser beam. The invention is characterized in that the shielding gas comprises a mixture of argon and/or helium, nitrogen, and an oxidizing compound selected from oxygen and carbon dioxide. | 05-09-2013 |
| 20130140280 | ARC WELDING DEVICE AND PROCESS USING A MIG/MAG TORCH COMBINED WITH A TIG TORCH - The invention relates to a device and a process for the arc welding of metal workpieces employing a MIG/MAG welding torch combined with a TIG welding torch so as to operate simultaneously and to obtain welded joints free of protruding defects. | 06-06-2013 |
| 20130153543 | OVERLAY WELDING METHOD AND OVERLAY WELDING APPARATUS - To facilitate overlay welding while securing a certain hardness of an overlaid portion and preventing welding defects, an overlay welding method for performing overlay welding on a surface P to be overlaid of a base material | 06-20-2013 |
| 20130180959 | METHOD OF FORMING AN OPTICAL DEVICE - A method of forming an optical device comprises applying a laser beam to a target area of the surface so as to selectively heat material of the surface thereby to provide transfer of material due to a surface tension gradient, wherein the surface is such that, when liquid, parts of the surface at higher temperatures have a higher surface tension than adjacent parts of the surface at lower temperatures. | 07-18-2013 |
| 20130193114 | Welding System and Method - A welding system having a welding gun with a contact tip having an bore extending therethrough and a consumable weld wire. The cross-sectional shape of the bore of the contact tip being is essentially identical to the cross-sectional shape of the weld wire. The bore having an essentially elliptical cross-sectional shape and the weld wire having an essentially elliptical cross-sectional shape. | 08-01-2013 |
| 20130193115 | WELDING APPARATUS AND A METHOD FOR WELDING - The invention relates to a twin wire welding apparatus ( | 08-01-2013 |
| 20130193116 | WELDING GAS AND PLASMA WELDING METHOD - A welding method, which performs non-keyhole welding of a ferritic stainless steel having a plate thickness of 3 mm or less using a plasma welding torch ( | 08-01-2013 |
| 20130228555 | SYNCHRONIZED HYBRID GAS METAL ARC WELDING WITH TIG/PLASMA WELDING - A system and method is provided in which each of a GMAW power supply and a TIG/plasma power supply are utilized in a common weld joint, where the waveforms from each of the power supplies are pulsed waveform which are pulsed out of phase which each other. Such a system minimizes arc interference and arc blow while at the same time increasing travel speed and throughput of a welding operation. | 09-05-2013 |
| 20130233833 | TANDEM GAS-SHIELDED ARC WELDING METHOD - In a tandem gas-shielded arc welding method, carbon dioxide is used as a shielding gas for a leading electrode formed by a solid wire, an argon-carbon dioxide gas mixture containing at least 60% by volume of argon gas is used as a shielding gas for a trailing electrode formed by a solid wire or a flux-cored wire, both the leading electrode and the trailing electrode have a reverse polarity, the leading electrode satisfies the relationships “5.00≦(I·V·10 | 09-12-2013 |
| 20130240488 | FLUX-CORED WIRE AND GAS-SHIELDED ARC WELDING METHOD USING THE SAME - There is provided a flux-cored wire containing flux within a stainless steel or mild steel outer cover for use in stainless steel welding and gas-shielded arc welding using a shielding gas. The flux-cored wire contains, based on the total mass of the flux-cored wire, predetermined amounts of C, Si, Mn, P, S, Cr, Ti, and O. The remainder are Fe and incidental impurities. The shielding gas is pure Ar gas. | 09-19-2013 |
| 20130256277 | APPARATUS AND METHOD FOR FORMING ELECTRICAL SOLDER CONNECTIONS IN A DISK DRIVE UNIT - An apparatus for forming electrical solder connections in a disk drive unit includes: a nozzle device for carrying out soldering on two pre-welding surfaces; a solder ball feeding device for transferring a single solder ball to the nozzle device; a gas pump device for supplying pressurized gases to the nozzle device; a laser device for emitting laser beams to the solder ball,; and a control device including at least one sensor for at least detecting status of the solder ball or pressure in the nozzle device or distance between the nozzle device and the pre-welding surfaces, and a control unit connected with the at least one sensor. The present invention can easily control the solder ball, the pressurized gases and the laser beams, thereby keeping the pressure of the nozzle device and the laser energy stable and, in turn improving the soldering result. | 10-03-2013 |
| 20130264315 | WELDING TORCH WITH A TEMPERATURE MEASUREMENT DEVICE - Various welding systems including a welding torch assembly are provided. The welding torch assemblies may include a welding torch adapted to be utilized in a welding operation to establish a welding arc between the welding torch and a workpiece. The welding torch assemblies may also include a temperature sensing system integral with the welding torch and adapted to sense a temperature of the workpiece. | 10-10-2013 |
| 20130277337 | CONSTRICTING NOZZLE AND TIG WELDING TORCH USING THIS NOZZLE - The constricting nozzle of the present invention includes (i) a cylindrical nozzle body disposed around the forward end of the tungsten electrode rod concentrically with the tungsten electrode rod and defines an annular high-speed gas passage between the nozzle body and the outer peripheral surface of the forward end of the tungsten electrode rod, (ii) a plurality of positioning projections that are protrudently formed on the inner peripheral surface of the nozzle body with predetermined intervals in the circumferential direction and that are arranged along the longitudinal direction of the nozzle body to hold the tungsten electrode rod in the center position of the nozzle body, and (iii) a plurality of gas-flow regulating grooves formed between the positioning projections and that extend in parallel in the longitudinal direction of the nozzle body and regulate the shielding gas (G) flowing through the high-speed gas passage. | 10-24-2013 |
| 20130292361 | DEVICE FOR AXIALLY HOLDING AN ELEMENT OF ELONGATE SHAPE AND FOR SETTING IT IN ROTATION AROUND ITS AXIS - An installation for welding top plugs on to nuclear fuel rods comprising a device for axially holding said rod and setting it in rotation and a weld chamber, where said device comprises a gripper and means to close the gripper on the rod, where said means comprise a pusher to apply an axial force on to the gripper, a linear actuator of axis parallel to the lengthways axis of the device, a yoke translationally secured to said pusher, and able to rotate freely around a fixed axis orthogonal to the lengthways axis which is not secant with the latter, where said yoke is connected and able to pivot relative to the linear actuator around a fixed axis parallel to the orthogonal axis such that the linear actuator causes the yoke to rotate around the first orthogonal axis and causes the pusher to slide, closing the gripper on the rod. | 11-07-2013 |
| 20130292362 | High Toughness Weld Metals With Superior Ductile Tearing Resistance - Weld metals and methods for welding ferritic steels are provided. The weld metals have high strength and high ductile tearing resistance and are suitable for use in strain based pipelines. The weld metal contains retained austenite and has a cellular microstructure with cell walls containing lath martensite and cell interiors containing degenerate upper bainite. The weld metals are comprised of between 0.02 and 0.12 wt % carbon, between 7.50 and 14.50 wt % nickel, not greater than about 1.00 wt % manganese, not greater than about 0.30 wt % silicon, not greater than about 150 ppm oxygen, not greater than about 100 ppm sulfur, not greater than about 75 ppm phosphorus, and the balance essentially iron. Other elements may be added to enhance the properties of the weld metal. The weld metals are applied using a power source with current waveform control which produces a smooth, controlled welding arc and weld pool in the absence of CO | 11-07-2013 |
| 20130299463 | HYBRID WELDING METHOD AND WELDING TORCH FOR HYBRID WELDING - An object of the present invention is to provide a hybrid welding method which can improve the stability of the arc, the welding speed, and welding efficiency, and the present invention provides a hybrid welding method in which a TIG arc is generated on the front side in the welding direction, and a MIG arc is generated on the back side in the welding direction in order to weld a welding base material, wherein electric current for the TIG welding is larger than electric current for the MIG welding; and an absolute value of the interval between an intersection of a center axis of a TIG electrode and a surface of the welding base material and an intersection of a center axis of a MIG electrode and the surface of the welding base material is 4 mm or less. | 11-14-2013 |
| 20130313229 | GAS SHIELDING DEVICE - A gas shielding device used during a welding step in a controlled atmosphere of a sound attenuation panel includes an inert gas injector to inject inert gas onto the panel and a housing to receive a welding torch. The inert gas injector comprises an inert gas diffuser mounted on the periphery of the housing for receiving the welding torch. | 11-28-2013 |
| 20130319975 | LASER PROCESSING MACHINE WITH AIR CURTAIN STRUCTURE - A laser processing machine with an air curtain structure comprises a machine frame, and a working platform, a processing device, and an air curtain device are disposed on the machine frame. The working platform is used for placing a workpiece. The processing device comprises a rail platform on which a laser output device is disposed. The laser output device is movable on the rail platform and can output laser on the workpiece. The air curtain device comprises at least one air inlet conduit provided with at least one air outlet at a location facing the laser output device on the rail platform. After the air curtain device is connected with an air supply device, the supplied air flows into the air curtain device through the air inlet conduit and is blown toward the laser output device from the air outlet to form an air curtain. | 12-05-2013 |
| 20130319976 | MOULD WITH CONFORMAL COOLING - A method of providing a mould with a conformal cooling passage includes rough machining a mould cavity generally corresponding to a moulded part shape using CAD data. Conformal cooling slots are cut in the mould cavity using the CAD data. The conformal cooling slots are welded shut using the CAD data to provide conformal cooling passages. A class A surface is machined over the conformal cooling passage and corresponds to a finished mould part shape using the CAD data. | 12-05-2013 |
| 20130341306 | METHOD FOR BONDING DISSIMILAR METALS TO EACH OTHER - In the bonding of an aluminum alloy material ( | 12-26-2013 |
| 20130341307 | WELDER WITH INTEGRATED WIRE FEEDER HAVING SINGLE-KNOB CONTROL - A welding-type component is disclosed having a single user input that requires a user to input only a single parameter to identify a welding-type process. From the single input, operating parameters for the welding-type process automatically are set or otherwise determined. The invention streamlines the welding-type process prescription process by allowing a user to input only a single parameter than can be used to determine and coordinate other parameters for the welding-type process. | 12-26-2013 |
| 20140014626 | CORED ELECTRODE FOR REDUCING DIFFUSIBLE HYDROGEN - A cored electrode to form a weld bead with a low diffusible hydrogen is described in a gas shielded electric arc welding process. The cored electrode includes a metal sheath and a fill composition. The filling composition includes a slag forming agent and at least two fluorine containing compounds. | 01-16-2014 |
| 20140034614 | METHODS FOR CONTROLLING LASER CUTTING PROCESSES AND LASER CUTTING SYSTEMS IMPLEMENTING SAME - Laser cutting processes are provided which are controlled using as a reference signal one or more emission lines which are characteristic of the radiation emitted by a gas or, more generally, by an emitting element present in the volume irradiated by the laser beam focussed by a laser head and adjusting, on the basis of this reference signal, at least one of the following process control parameters: the power of the laser, the frequency and the duty cycle of the laser pulse, the pressure of an assisting gas emitted by a nozzle forming part of the laser head, the relative speed of the laser head with respect to the workpiece, the distance between the laser head and the surface of the workpiece, and the distance between the focal point of the laser beam and the surface of the workpiece. Laser cutting devices are also provided. | 02-06-2014 |
| 20140061166 | SYSTEMS AND METHODS FOR WELDING ELECTRODES - The invention relates generally to welding and, more specifically, to welding wires for arc welding, such as Gas Metal Arc Welding (GMAW) or Flux Core Arc Welding (FCAW). In one embodiment, a tubular welding wire includes a sheath and a core, and the core includes an organic stabilizer component. Further, the organic stabilizer component includes an organic sub-component configured to release hydrogen near a surface of a workpiece during welding, and includes a Group I metal, Group II metal, or a combination thereof | 03-06-2014 |
| 20140076857 | SYSTEM AND METHOD FOR MANUFACTURING AN AIRFOIL - A system for manufacturing an airfoil includes a laser beam and a first fluid column surrounding the laser beam to create a confined laser beam directed at the airfoil. A gas flowing inside the airfoil disrupts the first fluid column inside the airfoil. A method for manufacturing an airfoil includes confining a laser beam inside a first fluid column to create a confined laser beam and directing the confined laser beam at a surface of the airfoil. The method further includes creating a hole through the surface of the airfoil with the confined laser beam, flowing a gas inside the airfoil, and disrupting the first fluid column with the gas flowing inside the airfoil. | 03-20-2014 |
| 20140076858 | CO2 GLOBULAR TRANSFER - The invention described herein generally pertains to a system and method for generating a negative polarity welding output current waveform to control a welding process. An electric arc welding system generates an electric welding waveform with portions in a negative polarity. A cycle of the electric welding waveform includes a background current phase, a short clearing ramp phase after the background current phase, a peak current phase, and a tail-out current phase of the electric welding waveform, wherein the peak current phase provides a negative peak current level, the tail-out current phase provides a monotonically increasing tail-out current level toward the positive background current level, and the short clearing ramp phase provides a decreasing current level in a positive polarity of current for the electric welding waveform. | 03-20-2014 |
| 20140083981 | SYSTEMS AND METHODS FOR LOW-MANGANESE WELDING WIRE - The invention relates generally to welding and, more specifically, to welding wires for arc welding, such as Gas Metal Arc Welding (GMAW) or Flux Core Arc Welding (FCAW). In one embodiment, a tubular welding wire includes a sheath and a core. The tubular welding wire is configured to form a weld deposit on a structural steel workpiece, wherein the weld deposit includes less than approximately 2.5% manganese by weight. | 03-27-2014 |
| 20140091066 | WELDER HAVING FEEDBACK CONTROL - A method and apparatus for improving the flow control of a shielding gas in a welding unit is described which uses feedback from at least one of a mass flow controller, a pressure sensor and a valve position sensor to regulate shielding gas flow through a controller. | 04-03-2014 |
| 20140097158 | MIG/MAG WELDING OF STAINLESS STEELS WITH ROTARY ARC AND AR/HE/CO2 GASEOUS MIXTURE - The invention concerns a MIG/MAG-type electric arc welding method that uses a consumable filler wire and gas protection formed by a ternary gaseous mixture comprising 19 to 21% helium, 0.8 to 1.2% CO2 and argon for the remainder (% of volume), in order to weld one or more pieces of stainless steel. According to the invention, the arc is rotary, the consumable filler wire is melted by the arc such as to transfer metal by means of a rotating liquid flow, and the welded parts comprise overlapping ends. | 04-10-2014 |
| 20140116993 | SYSTEM AND METHOD FOR ARC-ION CLEANING OF MATERIAL PRIOR TO CLADDING SAME - A process for cladding a surface of a substrate that includes cleaning the surface just prior to applying the cladding. Oxides, such as base metal oxides, are removed from the surface during the step of cleaning. Cleaning methods include an ionized gas cleaning process that may include forming an arc between an electrode and the surface. Optionally, the step of cleaning can occur in a chamber that is substantially evacuated. The cladding can be applied to the cleaned surface immediately after it has been cleaned. | 05-01-2014 |
| 20140124482 | MODIFIED FLUX SYSTEM IN CORED ELECTRODE - A cored electrode having reduced moisture pick-up properties and which forms a weld bead with low diffusible hydrogen in a gas shielded electric arc welding process. The cored electrode includes a metal sheath and a fill composition. The fill composition includes titanium dioxide, slag forming agent and a sodium-silica-titanate compound. | 05-08-2014 |
| 20140131320 | SYSTEM AND METHOD TO DETECT DROPLET DETACHMENT - The invention described herein generally pertains to a method for improved droplet detachment detection in a welding process in which a derivative of at least one welding parameter over time is used to detect droplet detachment from the wire during a welding operation based identification of a peak signature. | 05-15-2014 |
| 20140131321 | VOLTAGE SENSING FOR HOT WIRE GUNS - The invention described herein generally pertains to a system and method for a voltage sense lead being disposed on or within a welder gun in a hot wire application (e.g., hot wire laser, hot wire hybrid, and the like) to monitor voltage across the electrode. In this manner, resistive heating can be regulated to ensure that the wire and weld pool (e.g., puddle) temperature are within a desired range. The voltage sense lead can be incorporated into a welder gun or onto a welder gun in order to mitigate inaccuracies and voltage drops resultant of a cable connecting the welder gun to the wire feeder of a hot wire system. | 05-15-2014 |
| 20140131322 | SYSTEM AND METHODS PROVIDING MODULATION SCHEMES TO AFFECT HEAT INPUT TO A WELD - Systems and methods to affect heat input to a weld and, therefore, an appearance of a deposited weld bead by modulating a mixing ratio of shielding gases and/or one or more welding parameters. For example, a mixing ratio of two different shielding gases from two sources of shielding gases may be modulated to affect the appearance of a deposited weld bead. The modulation frequency may be based on a selected travel speed of a welding tool. Furthermore, a wire feed speed of a welding electrode may be synergistically modulated with the shielding gases to affect a deposited weld bead appearance. Other welding parameters may be synergistically modulated with the shielding gases to affect a deposited weld bead appearance. | 05-15-2014 |
| 20140138358 | COMPONENT REPAIR ARRANGEMENT AND METHOD - A component repair arrangement includes a material depositing electrospark rod configured to deposit a material onto the component. Also included is a first routing hose for flowing a first shielding gas to a location proximate a tip of the material depositing electrospark rod, the first shielding gas removing a plurality of sparks generated proximate the tip. | 05-22-2014 |
| 20140151341 | WIRE BONDING APPARATUS - Provided with a wire bonding apparatus capable of preventing oxidation of a surface of a free air ball. The apparatus is provided with: a capillary for bonding a wire to each electrode; a horizontal plate provided with a through hole allowing a tip of the capillary to be inserted and removed; and a first and a second antioxidant gas flow channel for allowing an antioxidant gas to be blown to a center of the through hole along an upper surface of the horizontal plate, the gas from the second channel being blown in a direction substantially intersecting with a direction in which the first channel extends. The horizontal plate is configured such that the antioxidant gas on the upper surface of the horizontal plate is allowed to flow outside the horizontal plate from its edges, where no antioxidant gas flow channel is disposed. | 06-05-2014 |
| 20140166625 | PLASMA SPRAYING APPARATUS - The plasma spraying apparatus includes a cathode, a first gas nozzle defining a first gas path between the cathode and itself, a second gas nozzle defining a second gas path between the first gas nozzle and itself, and a third gas nozzle disposed between the first and second gas nozzles to define a third gas path between the first and second gas paths. A wire is disposed at a distal end thereof in front of a nozzle opening of the second gas nozzle. A first gas sprayed through the first gas nozzle is turned into plasma flame, which melts the wire into droplets, and the droplets are sprayed onto a target by a second gas sprayed through the second gas nozzle. The third gas absorbs heat from the plasma flame to thereby turn into a high-temperature gas flow externally of the plasma flame. | 06-19-2014 |
| 20140166626 | SELF-ADJUSTING WIRE FEEDER MOUNTING ASSEMBLY - A self-adjusting wire feeder mounting assembly includes a mount fixedly connectable to a multi-axis robotic arm, and a slidable, floating adapter plate for mounting of a wire feeder thereon. The adapter plate is coupled with and slidable about the mount, and the adapter plate is moveable relative to the mount when a force is applied to the wire feeder. | 06-19-2014 |
| 20140183166 | MANUFACTURING METHOD FOR ADVANCED HIGH-STRENGTH STEEL WHEEL AND JIG DEVICE THEREOF - The present invention relates to a manufacturing method for advanced high-strength steel (AHSS) wheel, comprising the following steps. Take an AHSS with at least 590 MPa of tensile strength for rolling to circular ring of a rim. Apply low heat input welding, such as the cold metal transfer (CMT) welding or the gas tungsten arc welding/tungsten inert gas arc welding (GTAW/TIG), at the junction of the rim to form a hollow cylindrical rim. Then perform hole expanding and spinning/roll forming operations to the rim. Take another AHSS with at least 980 MPa of tensile strength for pressing and forming a disk. Apply low heat input welding, such as cold metal transfer (CMT) welding, to the rim and the disk to produce a wheel. According to the present invention, the welding quality of products can be improved significantly; the fatigue lifetime of wheels can be enhanced; and wheels are lightweight. | 07-03-2014 |
| 20140202993 | WELDING METHOD - A method of welding surface-treated members together using a welding wire includes a step of transferring a droplet detached from the wire to the members and a step of pushing the melt pool in the direction opposite to the direction of welding in such a manner that the gas generated from the members during welding is released from the site of generation. The melt pool is pushed to expose the overlapped region of these members. The gas generated from the members is released to the exposed portion, preventing generation of pores such as blowholes, and also generation of spatters. | 07-24-2014 |
| 20140209572 | CONTACT DEVICE FOR CONTOURED SURFACES - There is provided a contact device ( | 07-31-2014 |
| 20140217067 | ROBOTIC WELDING CABLE - A robotic welding cable for a welding torch includes a flexible hose defining a hollow core for passage of welding wire and shielding gas. Conductor strands are arranged around the flexible hose. A composite layered covering includes electrical insulation that covers the conductor strands and an outer jacket that surrounds the electrical insulation. The electrical insulation is formed of an Ethylene Propylene Diene Monomer (EPDM) synthetic rubber, and the outer jacket is formed of a Chlorinated Polyethylene (CPE) synthetic rubber. | 08-07-2014 |
| 20140217068 | METHOD FOR WELDING AND FOR HARD SURFACE DEPOSITION OF METAL PARTS MADE OF ALUMINIUM BY A MIG METHOD WITH PULSED CURRENT AND FILLER WIRE - A method for hard surface deposition on aluminium metal parts of a turbine engine using MIG welding equipment which includes a pulsed current generator and pulsed filler metal wire feed, wherein the deposition is achieved using a filler metal wire whose composition is of the same nature as the composition of the aluminium alloy of the part to undergo hard surface deposition, with the pulsed metal wire feed and speed of deposition on the metal part of the turbine engine being adapted to carry out deposition without hot fissuring. | 08-07-2014 |
| 20140231394 | UNDERWATER WELDING APPARATUS AND UNDERWATER WELDING METHOD - An underwater welding apparatus includes: an underwater welding head provided underwater and having, at its leading end, a nozzle section from which laser light is emitted; a shied cover formed of an elastic member and provided around the nozzle section so as to form, at the leading end of the underwater welding head, a space where water is excluded by shield gas; and an expansion/contraction member having a discharge hole for discharging water and shield gas containing metal dust particles from an inside of the shield cover, the discharge hole being increased in diameter as pressure inside the shield cover rises, while being reduced in diameter as the pressure inside the shield cover falls. | 08-21-2014 |
| 20140231395 | METHOD AND DEVICE FOR JOINT-WELDING COATED METAL SHEETS - A method for joint-welding coated metal sheets in a butt joint. At least one pulverulent welding additive in the form of a gas-powder flow is added to the weld melt via at least one flow duct such that the gas-powder flow leaving the flow duct is directed towards the weld melt at a speed of at least 2 m/s, such that the welding additive mixes turbulently with the weld melt and flow eddies form in the weld melt. A device including at least one welding head for producing and/or focussing an energy beam and at least one flow duct for supplying gas-powder flow, the flow duct having a longitudinal axis, the longitudinal axis and the beam axis of the energy beam being at an angle between 15 and 75 degrees. The flow duct is adapted to set the gas powder flow to a speed of at least 2 m/s. | 08-21-2014 |
| 20140246405 | LASER CUTTING METHOD AND LASER CUTTING DEVICE - A laser cutting device includes a control unit which sets a steady oxygen concentration, a moving speed of a laser nozzle and laser beam steady control conditions based on a material and a plate thickness of the workpiece, decreases the moving speed of the laser nozzle to a first setting speed when the laser nozzle arrives a first setting position in front of an end point of a cutting trajectory, and decreases a relative moving speed of the laser nozzle to a second setting speed by varying the oxygen concentration of the cutting gas and the control condition of the laser beam when the laser nozzle arrives at a second setting position. | 09-04-2014 |
| 20140246406 | TIG WELDING METHOD OF FERRITE STAINLESS STEEL SHEET - A TIG welding method for a ferrite stainless steel sheet is disclosed, wherein a first shield gas is used wherein the gas is a mixture of argon gas and helium gas, 20 to 90% by volume of helium is included in the mixture, and the flow rate S | 09-04-2014 |
| 20140251960 | METHOD OF LASER WELDING A NUCLEAR FUEL ROD - A method of welding a fuel rod includes the following steps. An end plug and a cladding tube of the fuel rod are brought together to abut each other, and welded by applying a laser beam directed to a welding zone to melt material of the end plug and the cladding tube. The welding is sensed by sensing radiation within a first wavelength range, which includes the wavelength of the laser beam coming from reflections from the welding zone, sensing radiation within a second wavelength range different from the first wavelength range, which includes infrared radiation from melted material, and sensing radiation within a third wavelength range different from the first and second wavelength ranges, which includes radiation from plasma. The welding and melting of material is monitored by monitoring the sensed radiations. | 09-11-2014 |
| 20140263191 | SYSTEM AND METHOD OF WELDING STAINLESS STEEL TO COPPER - A system and method of welding stainless steel to copper is provided. The method includes providing a first workpiece composed of stainless steel and providing a second workpiece composed of copper. The method also includes heating by using a laser a root area of a joint created by the workpieces. The heating by the laser creates a keyhole in at least one of the first workpiece and the second workpiece. The method also includes providing a consumable electrode that is composed of nickel to the joint and creating an arc between the consumable electrode and the joint using a welding current. The preheating of the arc using the keyhole eliminates the need to preheat the second workpiece. | 09-18-2014 |
| 20140291297 | GAS TUNGSTEN ARC WELDING WITH CROSS AC ARCING TWIN WIRES - Gas metal arc welding (GMAW) is a widely used process for joining metals. Its main advantage over its competition gas tungsten arc welding (GTAW) is its high productivity in depositing metals. However, to melt metal from the wire to deposit into the work-piece, additional heat is consumed and applied to the work-piece with an uncontrolled fixed proportion to the effective heat that melts the wire. Such additional heat is often in excess of the needed heat input for the work-piece. The side-effects include a waste of the energy, an increased distortion, and possible materials property degradation. This invention is to device a method to transfer this part of heat to melt the wire by adding two wires, which form a pair of arc spots, under a tungsten arc. It also devices a method to assure the arc between the two wires be maintained stable such that the transfer be successfully continuous. The successful continuous transfer improves the energy efficiency, eliminates the adverse effects on the distortion and materials property, and decouples the controls on mass input and heat input on the work-piece. | 10-02-2014 |
| 20140299581 | METHOD FOR WELDING ROTORS FOR POWER GENERATION - The invention relates to a method for welding rotors for power generation such as gas turbines, steam turbines, and generators having a plurality of rotor discs arranged along a rotor axis. The method includes providing said discs with a weld seam preparation. The weld seam preparation includes a root, a first, gap-like welding section adjoining the root in radial direction, and a second, gap-like welding section adjoining the first welding section in radial direction. The method further includes melting the root by means of a first welding process; making a weld in the first welding section by means of a second welding process; and filling up the second welding section by means of a third welding process. | 10-09-2014 |
| 20140305910 | System and Method Utilizing Fiber Lasers for Titanium Welding Using an Argon Cover Gas - The present invention is a method and system for reducing contamination in the resulting plasma of a weld produced by a fiber laser. The invention establishes the fiber laser in an optimal configuration for applying a high density beam to a weld material that eliminates spectral interference. The beam is applied in a narrow bandwidth of 1064 nm+/−0.5 nm in one operative condition using an inert shielding gas, preferably argon, in a cross-flow or controlled environment around the welding region to prevent contamination of the plasma forming in the weld region. The method is optimized by determining and avoiding the emission spectrum for the fiber laser and the cover gas or gasses as well as any particular excitation spectra for the weld material. The system can utilize a single laser input, or can utilize multiple lasers joined by coupling means and utilizing a switch to select one or more of the fiber lasers. | 10-16-2014 |
| 20140305911 | WELDING DIAGNOSTIC DEVICE FOR IDENTIFYING METAL TRANSFER MODES DURING A WELDING PROCESS AND A METHOD OF IDENTIFYING METAL TRANSFER MODES OF A WELDING PROCESS - Provided herein is a welding diagnostic device, a method of identifying a metal transfer mode of a welding process presently being performed and a transfer mode identifier for use with a GMAW welding machine. In one embodiment, the welding diagnostic device includes: (1) a welding data interface configured to receive a welding voltage from a welding machine during a welding process and (2) a data acquisition system configured to, during the welding process, determine a metal transfer mode of the welding process based on the welding voltage and provide a sensory indication thereof. | 10-16-2014 |
| 20140312005 | DUAL GAS LASER CUTTING OF MEDICAL DEVICES - A system prevents oxidation of a laser cut workpiece by utilizing a laser source that utilizes laser source with an inert gas, such as argon or helium, rather than air or oxygen, to create the slots or kerfs which form the pattern cut into the workpiece. The system introduces oxygen gas through the workpiece as it is being laser cut to oxidize any slag or dross created during the laser cutting process. Oxygen or a mixture of oxygen with other gases cools the slag and the workpiece while at the same time oxidizing the slag to either completely burn or partial burn the slag before it strikes an exposed surface of the tubular member. | 10-23-2014 |
| 20140319103 | WELDING ASSEMBLY FOR GAS SHIELDED ARC WELDING - A welding assembly includes an adapter, a diffuser, and a nozzle. The adapter includes an inner portion, a discharge portion, and an engagement portion. The discharge portion defines an outer periphery and at least one aperture. The diffuser defines a contact end, a diffusion end and an outer periphery. The contact end is engaged with the discharge portion of the adapter. The nozzle includes a discharge end, an engagement, end and an inner surface. The engagement end defines a groove and engages with the engagement portion of the adapter. The groove and the outer periphery of the diffuser defines at least one discharge passage within the engagement end of the nozzle. The inner portion of the adapter is in fluid communication with the inner surface of the nozzle through the aperture the discharge passage. Shielding gas is directed toward tip portion of the contact tip through the discharge passages. | 10-30-2014 |
| 20140339202 | POLARITY CHANGING PIN CONNECTOR - A welding system includes a welder configured to output welding power to generate an arc between a welding electrode and a workpiece. The welding system also includes a power pin configured to be coupled to the welder in a first orientation or a second orientation. The power pin is configured to switch the welding power from a first polarity to a second polarity when the power pin is switched from being coupled to the welder in the first orientation to being coupled to the welder in the second orientation. | 11-20-2014 |
| 20140353286 | METHOD FOR GAS METAL ARC WELDING - A method for gas metal arc welding is disclosed, wherein a welding current is passed through a wire electrode and the a wire electrode is melted by a welding arc, wherein at least one parameter that influences Joulean heating of the wire electrode is adjusted. | 12-04-2014 |
| 20140353287 | METHOD FOR PRODUCING A WELDED JOINT - A method for producing a welded joint between a high-strength aluminium alloy with a copper proportion as a first metal and a second metal, in which the welded joint is produced by CMT welding. | 12-04-2014 |
| 20140353288 | ALUMINUM DEOXIDIZING WELDING WIRE - Provided is a welding method and electrodes (wires) with aluminum as a primary deoxidizer and a basic flux system for joining a workpieces with weld metal of comparable strengths and enhanced toughness. For instance, provided is a welding wire, comprising an aluminum content configured to act as a primary deoxidizer, and an overall composition configured to produce a weld deposit comprising a basic slag over a weld bead, wherein the aluminum content is configured to kill the oxygen in the weld pool, and wherein the oxygen comprises oxygen provided by a shielding gas or produced by heating of welding filler materials. Further provided is a welding method comprising arc welding a workpiece using an electrode having aluminum as a primary deoxidizer under a gas shield to produce a bead of weld deposit and a basic slag over the weld bead. | 12-04-2014 |
| 20140367366 | SYSTEMS AND METHODS OF CONDITIONING AN AIR FLOW FOR A WELDING ENVIRONMENT - A welding system includes a gas supply system configured to provide an air flow to a welding application. The gas supply system is configured to draw the air flow from an ambient environment about the gas supply system. | 12-18-2014 |
| 20150014282 | CONTACT TIP FOR USE IN GAS METAL-ARC WELDING - A contact tip ( | 01-15-2015 |
| 20150014283 | Hybrid Hot-Wire And Arc Welding Method And System Using Offset Positioning - A method and system to weld or join coated workpieces using an arc welding operation and at least one hot wire, resistance heated wire. Each of the arc welding and hot wire operation are directed to the same puddle. However, the arc welding operation is offset out of the joint from the hot wire operation, where the hot wire is directed into the joint. | 01-15-2015 |
| 20150027995 | SOLID WIRE, AND GAS-SHIELDED ARC WELDING METHOD USING SAME - A solid wire is for gas-shielded arc welding, using a shielding gas, and for galvanized steel sheet welding. The solid wire comprises, to the mass of the whole of the solid wire, predetermined amount of C, Si, Mn, P, S, O, and Cr, with the balance consisting Fe and inevitable impurities. The solid wire satisfies “1.0≦(percentage by mass of Si+that by mass of Mn)/{100(that by mass of S+that by mass of O}≦4.0” and “0.50≦percentage by mass of Mn/that by mass of Si≦2.00”. The shielding gas is an Ar gas comprising 25 to 40% of CO | 01-29-2015 |
| 20150027996 | AUTOMATED WELDING OF MOULDS AND STAMPING TOOLS - A tool welding system is disclosed that includes a table that heats a tool. A multi-axis robot includes a welding head that is moved relative to the table in response to a command. A controller is in communication with the robot and generates the command in response to welding parameters. The weld parameters are based upon a difference between an initial tool shape and a desired tool shape. The difference between the initial tool shape and the desired tool shape corresponds to a desired weld shape. The desired weld shape is adjusted based upon initial tool shape variations, which includes thermal growth of the tool. The tool is welded to provide the desired weld shape to achieve a desired tool shape. | 01-29-2015 |
| 20150034605 | HIGH FRACTURE TOUGHNESS WELDS IN THICK WORKPIECES - Embodiments of flux cored welding electrodes and methods of use thereof are disclosed. The flux cored welding electrodes limit brittleness of flux cored arc welds, particularly in thick weld deposits. Limiting brittleness in thick (e.g., from about 1″ to about 6″) flux cored arc welds is achieved by utilizing flux cored welding electrodes having chemical compositions that reduce (as compared to presently marketed electrodes) or altogether eliminate niobium and vanadium from their chemical compositions. | 02-05-2015 |
| 20150048055 | WELDING METHOD - A welding method wherein the root gap aperture displacement is measured before welding begins, and a welding material having a Mn/S ratio and a Mn/Si ratio compatible with the measured root gap aperture displacement is selected from gas-shielded arc welding materials. Gas-shielded arc welding is then performed using the selected welding material. | 02-19-2015 |
| 20150048056 | WELDING SYSTEM AND METHOD - A welding system having a welding gun with a contact tip having an bore extending therethrough and a consumable weld wire. The cross-sectional shape of the bore of the contact tip being is essentially identical to the cross-sectional shape of the weld wire. The bore having an essentially elliptical cross-sectional shape and the weld wire having an essentially elliptical cross-sectional shape. | 02-19-2015 |
| 20150053652 | Shopping Cart Basket and Method of Manufacture - A shopping cart in one embodiment comprises a uniframe, a mat basket, and a slim-fit cart frame and basket combination, as well as in multiple embodiments, providing individual structural differences and advantages over pre-existing forms of shopping carts. | 02-26-2015 |
| 20150069024 | METHOD FOR GAS METAL ARC WELDING - A method for gas metal arc welding, as well as to a device for gas metal arc welding and the use of an additional gas during gas metal arc welding, wherein a wire electrode is melted by an arc, wherein the arc burns between the wire electrode and a work piece, and an inert gas is supplied, and wherein an additional gas in the form of at least one additional gas flow directed toward the tip of the wire electrode is supplied in addition to the inert gas. | 03-12-2015 |
| 20150076119 | SYNCHRONIZED ROTATING ARC WELDING METHOD AND SYSTEM - A welding method includes feeding a welding electrode axially from a welding torch, moving the welding electrode radially in a desired pattern with respect to a central axis of the welding torch by a motion control assembly within the welding torch, transmitting from control circuitry a signal corresponding to a position of the welding electrode relative to a weld joint or weld pool, advancing the welding torch or a workpiece to establish a weld, and transferring material from the welding electrode to a first location in an area of the weld pool. The welding electrode moves radially while feeding the welding electrode from the welding torch, the material from the welding electrode is transferred to the first location during a first cycle of the desired pattern, and the first location is controlled based at least in part on the signal. | 03-19-2015 |
| 20150076120 | NARROW GROOVE WELDING METHOD AND SYSTEM - A system includes a welding torch assembly configured to establish a welding arc between an electrode and workpieces separated by a narrow groove utilizing power from a power supply while moving the electrode radially in a desired pattern by a motion control assembly within the welding torch assembly. The welding torch assembly includes a nozzle through which the electrode is fed and within which the electrode is radially moved. | 03-19-2015 |
| 20150090698 | METHOD FOR GAS METAL ARC WELDING - A method and device for gas metal arc welding, wherein a current-carrying wire electrode is melted by an arc, and wherein gas metal arc welding is performed using a filler metal, which contains at least one constituent that releases deleterious emissions through evaporation, wherein a composition that does not contain this constituent is selected for the wire electrode, and a dead weld metal containing this constituent is fed to the arc and/or a molten bath without a current. | 04-02-2015 |
| 20150108094 | METHOD AND DEVICE FOR GAS METAL ARC WELDING - A method and device for gas metal arc welding, wherein a wire electrode is melted by an arc, wherein the arc burns between the wire electrode and a work piece, wherein an inert gas is supplied in the form of an inert gas flow, wherein emissions are released in the form of emission particles during gas metal arc welding, and wherein at least one flow gradient is generated in the direction of the work piece for agglomerating the emission particles. | 04-23-2015 |
| 20150108095 | METHOD AND APPARATUS FOR FABRICATION OF ARTICLES BY MOLTEN AND SEMI-MOLTEN DEPOSITION - A method and apparatus for depositing metals and metal-like substances in two and three dimensional form without a substrate in a safe, rapid and economical fashion using gas shielded arc welding equipment and programmable robotic motion. The method and apparatus includes the use and application of robotic controls, temperature and position feedback, single and multiple material feeds, and semi liquid deposition thereby creating near net shape parts particularly well suited to rapid prototyping and lower volume production. | 04-23-2015 |
| 20150129560 | PLASMA-MIG WELDING METHOD AND WELDING TORCH - Provided are a plasma-MIG welding method and a welding torch that are capable of reducing spatter amount without relying on control of a MIG welding power supply. The plasma-MIG welding method employs a plasma-MIG welding device configured from: a plasma torch section that includes a plasma nozzle and a plasma electrode; and an MIG torch that includes an MIG tip and a welding wire. The plasma torch section and the MIG torch are arranged so as to face in different directions at a predetermined distance from each other. The plasma-MIG welding method is characterized in that a plasma arc is made to locally overlap with a tip end portion of the welding wire, and in a state in which melting of the welding wire is promoted, MIG welding is carried out without short-circuiting between a workpiece and a tip end of the welding wire which is a consumable electrode. | 05-14-2015 |
| 20150136741 | METHOD FOR PRODUCING ARC-WELDED STRUCTURAL MEMBER - [Problem] To provide excellent liquid metal embrittlement cracking resistance to an arc-welded structural member using a Zn—Al—Mg based alloy coated steel plate member without restriction of the species of steel for a base steel for coating and without much increase in cost. | 05-21-2015 |
| 20150298237 | METHOD AND DEVICE FOR MONITORING INERT GAS DURING A WELDING PROCESS - The invention relates to a method and a device ( | 10-22-2015 |
| 20150298240 | TANDEM GAS METAL ARC WELDING SYSTEM - A gas metal arc welding system that includes leading and trailing welding torch assemblies arranged to operate in tandem. The leading welding torch assembly further includes a torch body; a contact tip connected to one end of the rotatable torch body, wherein the contact tip further includes a passage formed therethrough; a consumable wire electrode passing through the body and exiting the contact tip through an exit hole; and a source of shielding gas. The trailing welding torch assembly further includes a non-rotatable torch body; a contact tip connected to one end of the non-rotatable torch body; a consumable wire electrode passing through the non-rotatable torch body and exiting through the contact tip; and a source of shielding gas. | 10-22-2015 |
| 20150298242 | ALUMINIUM/COPPER HETEROGENEOUS WELDING - Method of assembling a first thin copper part and a second thin aluminum part, each to be welded using heterogeneous welding, includes placing the ends of the parts so that they face one another and pressing the ends against one another so as to constitute a welding zone extending therebetween; and applying an aluminum alloy by way of filler metal to the welding zone using a low energy welding method in which the electric arc and the meltable filler wire are wider than the combined thickness of the parts, the parts being held so as to maintain the welding zone at the top using a fixing element including at least two rigid blocks of a conductive material whose thickness is between 1 and 2 mm, whose length is greater than that of the parts and whose width is sufficient to hold the parts, and a pressure fixing system. | 10-22-2015 |
| 20150367446 | APPARATUSES, SYSTEMS AND METHODS FOR THREE-DIMENSIONAL PRINTING - The present disclosure provides three-dimensional (3D) objects, 3D printing processes, as well as methods, apparatuses and systems for the production of a 3D object. Methods, apparatuses and systems of the present disclosure may reduce or eliminate the need for auxiliary supports. The present disclosure provides three dimensional (3D) objects printed utilizing the printing processes, methods, apparatuses and systems described herein. | 12-24-2015 |
| 20150367447 | APPARATUSES, SYSTEMS AND METHODS FOR THREE-DIMENSIONAL PRINTING - The present disclosure provides three-dimensional (3D) objects, 3D printing processes, as well as methods, apparatuses and systems for the production of a 3D object. Methods, apparatuses and systems of the present disclosure may reduce or eliminate the need for auxiliary supports. The present disclosure provides three dimensional (3D) objects printed utilizing the printing processes, methods, apparatuses and systems described herein. | 12-24-2015 |
| 20150367448 | APPARATUSES, SYSTEMS AND METHODS FOR THREE-DIMENSIONAL PRINTING - The present disclosure provides three-dimensional (3D) objects, 3D printing processes, as well as methods, apparatuses and systems for the production of a 3D object. Methods, apparatuses and systems of the present disclosure may reduce or eliminate the need for auxiliary supports. The present disclosure provides three dimensional (3D) objects printed utilizing the printing processes, methods, apparatuses and systems described herein. | 12-24-2015 |
| 20160001391 | GAS SYSTEMS, WELDING SYSTEMS, AND METHODS OF WELDING - A gas delivery system delivers a shielding gas from a source through one or more hoses to a torch having a nozzle during welding of a workpiece. A shielding gas controller includes an inlet, an outlet, and at least one valve between the inlet and the outlet. The valve operates in response to a predetermined minimum shielding gas flow set point. The shielding gas controller operates the valve before or after a weld to change the flow of the shielding gas according to the predetermined minimum shielding gas flow set point. A method of welding includes predetermining a flow rate of a shielding gas, predetermining another flow rate of the gas, dispensing the gas at the first flow rate proximate a first weld pool during welding, and dispensing the shielding gas at the second flow rate, different from the first flow rate, during welding of another weld on the workpiece. | 01-07-2016 |
| 20160031034 | WELDING APPARATUS AND A METHOD FOR WELDING - A twin wire welding apparatus including a first contact tube for guiding a first consumable electrode toward a weld puddle and transferring welding current to the first consumable electrode, a second contact tube for guiding a second consumable electrode toward said weld puddle and transferring welding current to the second consumable electrode, and a single power source connected to said first and second contact tubes for providing the same potential to said two consumable electrodes, and a method for operating such an apparatus. | 02-04-2016 |
| 20160045972 | METHOD FOR MANUFACTURING WELDED ARTICLE, WELDING METHOD, AND WELDING DEVICE - The purpose of the present invention is, in gas shielded arc welding using an active gas and flux-cored wire with primer-coated steel plates as a base material, to suppress occurrences of poor appearance in welded parts caused by pores originating in the primer. A welding method for a welded article positions a first steel plate and a second steel plate formed from primer-coated steel plates in a T shape and welds each of corner parts formed in two locations. Using flux-cored wire ( | 02-18-2016 |
| 20160045974 | OPEN-PIPE WELD SHIELDING SYSTEM FOR ELECTRIC RESISTANCE WELDED STEEL PIPE OR TUBE - An open-pipe weld shielding arrangement for an electric resistance welded steel pipe or tube includes a shielding-gas blowing nozzle and a gas flow rate controller. The shielding-gas blowing nozzle includes a gas outlet disposed at a position 5 to 300 mm above upper ends of portions to be welded, and the gas flow rate controller controls the flow rate of the shielding gas blown from the gas outlet to 0.5 to 50 m/sec. | 02-18-2016 |
| 20160052078 | WELDING TORCH WITH UPPER AND LOWER SHIELDING GAS FLOW AND WELDING METHOD USING WELDING TORCH FOR HORIZONTAL WELDING - A welding torch ( | 02-25-2016 |
| 20160074973 | ELECTRIC ARC TORCH WITH COOLING CONDUIT - An electric arc torch includes a torch base, and a cooling conduit having a conduit wall forming a central axial bore and having a plurality of longitudinal cooling channels spaced circumferentially around the bore. The cooling channels extend through the conduit wall from a first end portion to a second end portion of the conduit. The cooling channels include both a plurality of cooling liquid distribution channels and a plurality of cooling liquid return channels alternately arranged within the conduit wall. The conduit includes a circumferential cooling liquid manifold in fluid communication with each of the cooling liquid distribution channels, a circumferential return manifold in fluid communication with each of the cooling liquid return channels, and a circumferential recirculation manifold in fluid communication with each of the cooling liquid distribution and return channels such that the cooling liquid distribution and return channels are in fluid communication through the circumferential recirculation manifold. | 03-17-2016 |
| 20160082538 | SYSTEM AND METHOD FOR DELIVERING NEGATIVE POLARITY CURRENT TO RELEASE GAS FROM A WELDING PUDDLE - The invention described herein generally pertains to a system and method related to reducing magnetic arc blow and steering the arc with two or more ground connections on the workpiece. The invention employs an AC switch component that is configured to activate one of the two or more ground connections to complete an electrical connection via the arc between the electrode and the workpiece. The activated ground connection can be used to counteract a buildup of magnetic field due to arc blow. Moreover, AC switch component can be configured to manipulate a direction of an arc based on activated a ground connection. In addition, AC switch component can oscillate between two or more ground connections to agitate a puddle formed by an electrode to release gas from the puddle and reduce porosity of a resulting weld. | 03-24-2016 |
| 20160096239 | Piercing Metal Workpieces by a Laser Beam - Methods and systems are implemented for piercing a metal workpiece by means of a laser beam and a process gas The methods and systems form a hole in the workpiece using the laser beam and using an inert gas as the process gas, such that the formed hole extends only partially through the workpiece, widen the upper part of the hole into a trough that surrounds the hole on the top side of the workpiece using the laser beam and using oxygen as the process gas, and fully pierce the hole using the laser beam and using oxygen as the process gas. | 04-07-2016 |
| 20160107270 | SYSTEMS AND METHODS FOR WELDING MILL SCALED WORKPIECES - This disclosure relates generally to Gas Metal Arc Welding (GMAW) and, more specifically, to Metal-cored Arc Welding (MCAW) of mill scaled steel workpieces. A metal-cored welding wire, including a sheath and a core, capable of welding mill scaled workpieces without prior descaling is disclosed. The metal-cored welding wire has a sulfur source that occupies between approximately 0.04% and approximately 0.18% of the weight of the metal-cored welding wire, and has a cellulose source that occupies between approximately 0.09% and approximately 0.54% of the weight of the metal-cored welding wire. | 04-21-2016 |
| 20160114419 | TITANIUM-DIAMOND WELD HARDFACING COMPOSITION, METHOD AND APPARATUS - A hard-clad coating composition for hardfacing is described. Also described is a weld hardfacing method for applying a coating composition to a base metal, and an apparatus for introducing the coating composition to the weld process. | 04-28-2016 |
| 20160121422 | WELDING METHOD FOR COPPER AND STEEL AND APPLICATION THEREOF - A welding method for copper and steel and application thereof is described herein. The welding method includes the following steps: butt connecting or sleeve connecting an end to be welded of a copper material with an end to be welded of a steel material; and welding and connecting the end to be welded of the copper material and the end to be welded of the steel material by a heating part of a heat supply device under the protection of a shielding gas, wherein the top end of the heating part is shifted towards the copper material, and the end to be welded of the copper material and the end to be welded of the steel material are simultaneously molten and further fuse mutually. | 05-05-2016 |
| 20160129532 | FLUX-CORED WIRE FOR GAS-SHIELDED ARC WELDING, METHOD FOR WELDING STEEL FOR VERY LOW TEMPERATURE USE, AND METHOD FOR MANUFACTURING WELD JOINT - [Object] There is provided a flux-cored wire capable of obtaining a weld metal having excellent low temperature toughness and improving welding efficiency, in which preheating performed for preventing cold cracking can be omitted or simplified. | 05-12-2016 |
| 20160131015 | METHOD FOR IMPROVING APPEARANCE OF DIESEL PARTICULATE FILTERS - A method of repairing an outer enclosure of a diesel particulate filter, having a first axial end and a second axial end, is disclosed. The method includes wrapping a generally planar metal sheet around the outer enclosure. The generally planar metal sheet has a first lateral edge, a second lateral edge, a first longitudinal edge, and a second longitudinal edge. Thereafter, aligning a first longitudinal edge with the first axial end and the second longitudinal edge with the second axial end is carried out. Next, causing one of an abutment or an overlap of the first lateral edge with the second lateral edge is performed. Lastly, joining the first longitudinal edge to the first axial end, the second longitudinal edge to the second axial end, and the first lateral edge with the second lateral edge along an axial length of the outer enclosure is performed by welding. | 05-12-2016 |
| 20160136758 | CLADDING METHOD FOR VALVE SEAT AND PRODUCTION METHOD FOR CYLINDER HEAD - A cladding method for a valve seat in a cylinder head blank includes a combustion chamber, an intake port or an exhaust port communicating with the combustion chamber, and an annular countersunk groove formed in an opening end of the port on the combustion chamber side, the method being for forming a cladding layer by irradiating metal powder supplied in the countersunk groove with a laser beam. A gas flow regulating wall is provided, which projects from the countersunk groove to an inner side of the countersunk groove and to the combustion chamber side, gas is sprayed during irradiating with the laser beam, and the gas is flown by the gas flow regulating wall from the inner side to an outer side of the countersunk groove. | 05-19-2016 |
| 20160136764 | WELDING TORCH WITH GAS FLOW CONTROL - An arc system is described which includes a power generator, a shielding gas source, a torch and a shielding gas monitor contained adjacent to or within the torch. The torch is connected to the power generator for producing an arc with a workpiece, is connected to the shielding gas source for providing shielding gas to an arc locations, and includes a flow sensor mounted within or adjacent the torch body for monitoring the flow of shielding gas through the torch and optimally providing feedback control of the shielding gas flow. | 05-19-2016 |
| 20160144445 | WELDING TORCH WITH A TEMPERATURE MEASUREMENT DEVICE - Various welding systems including a welding torch assembly are provided. The welding torch assemblies may include a welding torch adapted to be utilized in a welding operation to establish a welding arc between the welding torch and a workpiece. The welding torch assemblies may also include a temperature sensing system integral with the welding torch and adapted to sense a temperature of the workpiece. | 05-26-2016 |
| 20160144447 | Welding Process Gas Metal Arc Welding - Double Cold Wire (GMAW-DCW) - Patent of a process that consists of a coupling a fixing split clamp to the torch ( | 05-26-2016 |
| 20160167156 | ADDITIVE MANUFACTURING OF METALLIC STRUCTURES | 06-16-2016 |
| 20160175780 | GAS MIXTURE AND METHOD FOR ELECTRIC ARC JOINING OR MATERIAL PROCESSING WITH REDUCED POLLUTANT EMISSION | 06-23-2016 |
| 20160199937 | ROTATING SHIELDING DEVICES AND METHODS OF WELDING | 07-14-2016 |
| 20160250708 | ARC WELDING METHOD, ARC WELDING APPARATUS, AND ARC WELDING CONTROLLER | 09-01-2016 |
| 20170233954 | Robotically-Controlled Laser Cladding Process for Repair of Worn and/or Damaged Railway Structures | 08-17-2017 |
| 20180021876 | BATTERY-POWERED WELDER AND METHOD OF USE | 01-25-2018 |
| 20190143445 | ELECTRON BEAM LAYER MANUFACTURING | 05-16-2019 |
