Patent application number | Description | Published |
20110031032 | DIAMOND TRANSITION LAYER CONSTRUCTION WITH IMPROVED THICKNESS RATIO - An insert for a drill bit may include a metallic carbide body; an outer layer of polycrystalline diamond material on the outermost end of the insert, the polycrystalline diamond material comprising a plurality of interconnected first diamond grains and a first binder material in interstitial regions between the interconnected first diamond grains; and at least two transition layers between the metallic carbide body and the outer layer, the at least two transition layers comprising: an outermost transition layer comprising a composite of second diamond grains, first metal carbide or carbonitride particles, and a second binder material; and an innermost transition layer comprising a composite of third diamond grains, second metal carbide or carbonitride particles, and a third binder material wherein a thickness of the outer layer is lesser than that of each of the at least two transition layers. | 02-10-2011 |
20110031033 | HIGHLY WEAR RESISTANT DIAMOND INSERT WITH IMPROVED TRANSITION STRUCTURE - An insert for a drill bit may include a metallic carbide body; an outer layer of polycrystalline diamond material on the outermost end of the insert, the polycrystalline diamond material comprising a plurality of interconnected first diamond grains and a first binder material in interstitial regions between the interconnected first diamond grains; and at least one transition layer between the metallic carbide body and the outer layer, the at least one transition layer comprising a composite of second diamond grains, first metal carbide particles, and a second binder material, wherein the second diamond grains have a larger grain size than the first diamond grains. | 02-10-2011 |
20110031037 | POLYCRYSTALLINE DIAMOND MATERIAL WITH HIGH TOUGHNESS AND HIGH WEAR RESISTANCE - A cutting element that includes a substrate; and an outer layer of polycrystalline diamond material disposed upon the outermost end of the cutting element, wherein the polycrystalline diamond material: a plurality of interconnected diamond particles; and a plurality of interstitial regions disposed among the bonded diamond particles, wherein the plurality of interstitial regions contain a plurality of metal carbide phases and a plurality of metal binder phases together forming a plurality of metallic phases, wherein the plurality of metal carbide phases are formed from a plurality of metal carbide particles; wherein the plurality of interconnected diamond particles form at least about 60 to at most about 80% by weight of the polycrystalline diamond material; and wherein the plurality of metal carbide phases represent at least 50% by weight of the plurality of metallic phases is disclosed. | 02-10-2011 |
20110042147 | FUNCTIONALLY GRADED POLYCRYSTALLINE DIAMOND INSERT - PCD inserts comprise a PCD body having multiple FG-PCD regions with decreasing diamond content moving from a body outer surface to a metallic substrate. The diamond content changes in gradient fashion by changing metal binder content. A region adjacent the outer surface comprises 5 to 20 percent by weight metal binder, and a region remote from the surface comprises 15 to 40 percent by weight metal binder. One or more transition regions are interposed between the PCD body and substrate. The transition region comprises PCD, binder metal, and a carbide, comprises a metal binder content less than that present in the PCD body region positioned next to it. | 02-24-2011 |
20110239767 | Acoustic Emission Toughness Testing Having Smaller Noise Ratio - A method, system and apparatus for testing properties of a hard component. The apparatus includes a holder, a component, an indenter, a sensor holder, and an acoustic sensor. The holder includes a first end and a second end opposite the first end. The first end defines a first cavity extending towards the second end. The component is positioned in the first cavity. The indenter is positioned adjacent to a portion of the component and applies a load onto the component. The sensor holder includes an upper portion, a lower portion, and a second cavity therein. The upper portion is coupled to the second end. The sensor is positioned within the second cavity. In some embodiments, the apparatus includes a rod coupled to the lower portion. The rod has a lower acoustic impedance than the sensor holder, thereby allowing sound waves to pass through the sensor holder and not be reflected back into the sensor. | 10-06-2011 |
20110286304 | Downhole Acoustic Emission Formation Sampling - A method, system and apparatus for testing properties of a rock formation surrounding a wellbore in situ. The apparatus includes a tool body, one or more indenters, and one or more acoustic sensors. The body includes an outer surface that defines one or more cavities therein. Each cavity extends into the body. Each indenter is positioned within a corresponding cavity and is positionable into an operating position and a non-operating position. The acoustic sensor is positioned within the cavity and adjacent to the indenter. The indenter is positioned at least partially beyond the outer surface when in the operating position. The acoustic sensor senses one or more acoustic events occurring when the indenter is in the operating position. The apparatus is inserted into the wellbore. Once inserted, the indenter applies a load onto the rock formation causing cracking and the sensor receives the generated acoustic transmissions. The transmissions are analyzed. | 11-24-2011 |
20130001100 | Ultrasound Assisted Electrochemical Catalyst Removal For Superhard Materials - A catalyst removal apparatus and method for removing catalyst from a polycrystalline cutter. The cutter includes a substrate and a cutting table. The apparatus includes a tank forming a cavity therein, an electrolyte fluid occupying the cavity, the cutter, a covering surrounding at least a portion of the cutter's sidewall and extending from at least the substrate's top surface towards the bottom surface, a cathode submersed within the fluid, and a power source. The cutting table is submersed within the fluid and positioned near the cathode, thereby forming a gap therebetween. The power source is coupled to the cutter and the cathode and electrolyzes the fluid to react with the catalyst in the cutting table to produce a salt. The salt dissolves in the fluid and is removed from the cutter. Optionally, a transducer is sonically coupled to the cutter and emits vibrations to remove salt from the cutting table. | 01-03-2013 |
20130067824 | ATTACHMENT OF THERMALLY STABLE POLYCRYSTALLINE TO A SUBSTRATE AND COMPACTS CONSTRUCTED - A method and apparatus for fabricating a cutter. The method includes obtaining a compact including a cutting surface, a bonding interface, and a sidewall extending from the perimeter of the cutting surface to the perimeter of the bonding interface. The method includes obtaining a substrate including a bonding surface, a mounting surface, and a substrate sidewall extending from the perimeter of the bonding surface to the perimeter of the mounting surface. At least a portion of the bonding interface is positioned adjacent at least a portion of the bonding surface. At least one of the substrate and the compact is rotated to produce a rotational differential therebetween. The temperature is increased on at least the bonding surface to a first temperature. The compact is coupled to the substrate to form the cutter. The apparatus includes a first holder coupled to the compact and a second holder coupled to the substrate. | 03-21-2013 |
20130067985 | THERMAL-MECHANICAL WEAR TESTING FOR PDC SHEAR CUTTERS - A method and apparatus for testing the abrasive wear resistance of PDC cutters or other superhard materials. The method includes obtaining a first cutter having a first substrate and a first cutting table coupled thereto and obtaining a second cutter having a second substrate and a second cutting table coupled thereto. The method also includes positioning a surface of the first cutting table in contact with a surface of the second cutting table. The method also includes rotating at least one of the first cutters and the second cutters where at least a portion of the first and/or second cutting tables is removed. The method includes determining the amount of first and/or second cutting table removed. The apparatus includes a first holder coupled to the first cutter and a second holder coupled to the second cutter, where at least one holder rotates circumferentially. | 03-21-2013 |
20130166214 | Acoustic Emission Toughness Testing For PDC, PCBN, Or Other Hard Or Superhard Material Inserts - An acoustic emissions testing device includes a test cutter including a first surface, an acoustic sensor, an indenter coupled to the first surface, and a load. The load is exerted on the indenter, which transfers the load to the first surface. The acoustic sensor is communicably coupled to the test cutter and detects one or more acoustic events occurring therein. An acoustic emissions testing system includes a data recorder coupled to the testing device. The data recorder records the data from testing device. Based upon the data received, the toughness of the test cutter is objectively determined and can be ranked comparatively to the toughness of other test cutters. The load is ramped up to a peak load, held for a period of time, and then ramped down. Cutters from the same cutter type as the test cutters have similar toughness. | 06-27-2013 |
20130213433 | Method to Improve the Performance of a Leached Cutter - A cleaned component having a polycrystalline structure, a method and apparatus for cleaning a leached component to form the cleaned component, and a method for determining the effectiveness of cleaning the leached component. The cleaned component includes a leached layer that has at least a portion of by-product materials removed. The by-product materials were deposited into the leached layer during a leaching process that formed the leached layer. The apparatus and method for cleaning includes a tank, a cleaning fluid placed within the tank, and at least a portion of the leached layer immersed into the cleaning fluid. Optionally, a transducer emits ultrasonic waves into the leached layer. The method for determining the effectiveness of cleaning includes cleaning the leached component to form the cleaned component, measuring one or more capacitance values of the cleaned component, repeating the cleaning and the measuring until achieving a stable lower limit capacitance value. | 08-22-2013 |
20130213720 | Method And Apparatus To Improve The Performance Of A Leached Cutter - A cleaned component having a polycrystalline structure, a method and apparatus for cleaning a leached component to form the cleaned component, and a method for determining the effectiveness of cleaning the leached component. The cleaned component includes a leached layer that has at least a portion of by-product materials removed. The by-product materials were deposited into the leached layer during a leaching process that formed the leached layer. The apparatus and method for cleaning includes a tank, a cleaning fluid placed within the tank, and at least a portion of the leached layer immersed into the cleaning fluid. Optionally, a transducer emits ultrasonic waves into the leached layer. The method for determining the effectiveness of cleaning includes cleaning the leached component to form the cleaned component, measuring one or more capacitance values of the cleaned component, repeating the cleaning and the measuring until achieving a stable lower limit capacitance value. | 08-22-2013 |
20130214768 | Use of Eddy Currents to Analyze Polycrystalline Diamond - A method, system, and apparatus for non-destructively characterizing one or more regions within an ultra-hard polycrystalline structure using eddy current measurements. The apparatus includes an eddy current measuring device having at least one terminal, a leached component comprising a polycrystalline structure, a first wire, and a probe. The leached component includes a cutting surface and an opposing second surface. A portion of the polycrystalline structure extending inwardly from the cutting surface has at least a portion of a catalyst material removed from therein. The first wire electrically couples the terminal to the probe, which is placed in contact with the cutting surface. The eddy current is measured one or more times and compared to a calibration curve to determine an estimated leaching depth within the polycrystalline structure. A data scattering range is ascertained to determine a relative porosity of the polycrystalline structure or the leaching quality within the polycrystalline structure. | 08-22-2013 |
20130214769 | Use of Capacitance And Eddy Currents to Analyze Polycrystalline Diamond - A method for non-destructively characterizing one or more regions within a polycrystalline structure using capacitance and eddy current measurements. The eddy current measurements include at least one of an impedance amplitude and a phase shift angle. The capacitance is measured one or more times and compared to a first calibration curve to determine an estimated leaching depth within the polycrystalline structure. A first data scattering range is ascertained from the capacitance measurements to determine a relative porosity or the leaching quality within the polycrystalline structure. The eddy current is measured one or more times and compared to a second calibration curve to determine an estimated leaching depth within the polycrystalline structure. A second data scattering range is ascertained from the eddy current measurements to determine a relative porosity or the leaching quality within the polycrystalline structure. Results from both measurements are used to ascertain a quality of the polycrystalline structure. | 08-22-2013 |
20130214799 | Use of Capacitance to Analyze Polycrystalline Diamond - A method, system, and apparatus for non-destructively characterizing one or more regions within an ultra-hard polycrystalline structure using capacitance measurements. The apparatus includes a capacitance measuring device having a positive and negative terminal, a leached component comprising a polycrystalline structure, a first wire, and a second wire. The leached component includes a first surface and an opposing second surface. The first wire electrically couples the positive terminal to one of the surfaces of the leached component and the second wire electrically couples the negative terminal to the other surface of the leached component. The capacitance is measured one or more times and compared to a calibration curve to determine an estimated leaching depth within the polycrystalline structure. A data scattering range is ascertained to determine a relative porosity of the polycrystalline structure or the leaching quality within the polycrystalline structure. | 08-22-2013 |
20130247478 | Method to Improve the Leaching Process - A method to leach a component that includes a polycrystalline structure. The method includes obtaining the component having the polycrystalline structure. The polycrystalline structure includes catalyst material deposited therein. The method also includes performing a leaching process on the polycrystalline structure to an intermediate leaching depth. The leaching process removes at least a portion of the catalyst material from the polycrystalline structure and forms one or more by-product materials deposited therein. The method also includes performing a cleaning process on the polycrystalline structure, which removes at least a portion of the by-product materials. The leaching process and the cleaning process are iteratively continued until the intermediate leaching depth reaches a desired leaching depth, both of which are measured from one end of the polycrystalline structure. The desired leaching depth is greater than at least one intermediate leaching depth. | 09-26-2013 |
20130248258 | Leached Cutter And Method For Improving The Leaching Process - A method to leach a component that includes a polycrystalline structure. The method includes obtaining the component having the polycrystalline structure. The polycrystalline structure includes catalyst material deposited therein. The method also includes performing a leaching process on the polycrystalline structure to an intermediate leaching depth. The leaching process removes at least a portion of the catalyst material from the polycrystalline structure and forms one or more by-product materials deposited therein. The method also includes performing a cleaning process on the polycrystalline structure, which removes at least a portion of the by-product materials. The leaching process and the cleaning process are iteratively continued until the intermediate leaching depth reaches a desired leaching depth, both of which are measured from one end of the polycrystalline structure. The desired leaching depth is greater than at least one intermediate leaching depth. | 09-26-2013 |
20130263521 | HIGH TEMPERATURE HIGH HEATING RATE TREATMENT OF PDC CUTTERS - A post manufacture method and apparatus for reducing residual stresses present within a component. The component includes a substrate, a polycrystalline structure coupled thereto, and residual stresses present therein. The method includes obtaining a component from a component category, determining a critical temperature and a critical time period for the component category at which the component becomes structurally impaired, determining a heat treatment temperature and a heat treatment time period based upon the critical temperature and the critical time period, and heating one or more remaining components from the component category to the heat treatment temperature for the heat treatment time period. The apparatus includes a heater defining a heating chamber and a molten bath positioned within the heating chamber. The components are placed within the pre-heated molten bath and isolated from oxygen during heating to the heat treatment temperature for the heat treatment time period. | 10-10-2013 |
20140060938 | POLYCRYSTALLINE DIAMOND MATERIAL WITH HIGH TOUGHNESS AND HIGH WEAR RESISTANCE - A cutting element that includes a substrate; and an outer layer of polycrystalline diamond material disposed upon the outermost end of the cutting element, wherein the polycrystalline diamond material: a plurality of interconnected diamond particles; and a plurality of interstitial regions disposed among the bonded diamond particles, wherein the plurality of interstitial regions contain a plurality of metal carbide phases and a plurality of metal binder phases together forming a plurality of metallic phases, wherein the plurality of metal carbide phases are formed from a plurality of metal carbide particles; wherein the plurality of interconnected diamond particles form at least about 60 to at most about 85% by weight of the polycrystalline diamond material; and wherein the plurality of metal carbide phases represent at least 35% by weight of the plurality of metallic phases is disclosed. | 03-06-2014 |
Patent application number | Description | Published |
20110146372 | Synthetic Materials for PDC Cutter Testing or for Testing Other Superhard Materials - A target cylinder and a method for testing a superhard component thereon. The target cylinder includes a first end, a second end, and a sidewall extending from the first end to the second end. At least one of the second end and the sidewall is an exposed portion that makes contact with the superhard component to determine at least one property of the superhard component. The exposed portion comprises at least one synthetic material having at least one of a compressive strength raging from about 12 kpsi to about 30 kpsi, an abrasiveness ranging from about 1 Cerchars to about 6 Cerchars, and an iron content ranging from about 5 percent to about 10 percent. Optionally, the exposed portion further comprises a second material interveningly positioned between or within the synthetic material in a predetermined and repeatable pattern. | 06-23-2011 |
20110146373 | Synthetic Materials for PDC Cutter Testing or for Testing Other Superhard Materials - A target cylinder and a method for testing a superhard component thereon. The target cylinder includes a first end, a second end, and a sidewall extending from the first end to the second end. At least one of the second end and the sidewall is an exposed portion that makes contact with the superhard component to determine at least one property of the superhard component. The exposed portion comprises at least one synthetic material having at least one of a compressive strength raging from about 12 kpsi to about 30 kpsi, an abrasiveness ranging from about 1 Cerchars to about 6 Cerchars, and an iron content ranging from about 5 percent to about 10 percent. Optionally, the exposed portion further comprises a second material interveningly positioned between or within the synthetic material in a predetermined and repeatable pattern. | 06-23-2011 |
20110146374 | Synthetic Materials for PDC Cutter Testing or for Testing Other Superhard Materials - A target cylinder and a method for testing a superhard component thereon. The target cylinder includes a first end, a second end, and a sidewall extending from the first end to the second end. At least one of the second end and the sidewall is an exposed portion that makes contact with the superhard component to determine at least one property of the superhard component. The exposed portion comprises at least one synthetic material having at least one of a compressive strength raging from about 12 kpsi to about 30 kpsi, an abrasiveness ranging from about 1 Cerchars to about 6 Cerchars, and an iron content ranging from about 5 percent to about 10 percent. Optionally, the exposed portion further comprises a second material interveningly positioned between or within the synthetic material in a predetermined and repeatable pattern. | 06-23-2011 |
20110239764 | Acoustic Emission Toughness Testing For PDC, PCBN, Or Other Hard Or Superhard Materials - An acoustic emissions testing device includes a pressurizable chamber, a rock sample, and one or ore acoustic sensors communicably coupled to the rock sample. The chamber includes a first chamber being pressurizable to a first pressure and a second chamber pressurizable to a second pressure. The rock sample is positioned within the pressurizable chamber such that a first portion of the sample is exposed to the first pressure and a second portion of the sample is exposed to the second pressure. The second pressure is increased to a threshold pressure, maintained at the threshold pressure for a time period, and then decreased. The acoustic sensors detect one or more acoustic events occurring within the rock sample. In certain embodiments, one or more of the intensity, the spatial location, and the propagating direction for one or more acoustic events are determinable. The system includes the testing device coupled to a recorder. | 10-06-2011 |
20110239765 | Acoustic Emission Toughness Testing For PDC, PCBN, Or Other Hard Or Superhard Material Inserts - An acoustic emissions testing device includes a testing sample including a hard surface, an acoustic sensor, an indenter coupled to the hard surface, and a load. The load is exerted on the indenter, which transfers the load to the hard surface. The acoustic sensor is communicably coupled to the testing sample and detects one or more acoustic events occurring within the testing sample. An acoustic emissions testing system includes a data recorder coupled to the testing device. The data recorder records the data from testing device. Based upon the data received, the toughness of the sample is objectively determined and can be ranked comparatively to the toughness of other samples. The load is ramped up to a peak load, held for a period of time, and then ramped down. | 10-06-2011 |
20110246096 | Acoustic Emission Toughness Testing For PDC, PCBN, Or Other Hard Or Superhard Materials - An acoustic emissions testing device includes a rock sample including a first surface, an acoustic sensor, an indenter coupled to the first surface, and a load. The load is exerted on the indenter, which transfers the load to the first surface. The acoustic sensor is communicably coupled to the rock sample and detects one or more acoustic events occurring within the rock sample. An acoustic emissions testing system includes a data recorder coupled to the testing device. The data recorder records the data from testing device. Based upon the data received, the toughness of the sample is objectively determined and can be ranked comparatively to the toughness of other samples. The load is ramped up to a peak load, held for a period of time, and then ramped down. | 10-06-2011 |
20110246102 | Acoustic Emission Toughness Testing For PDC, PCBN, Or Other Hard Or Superhard Material Inserts - An acoustic emissions testing device includes a testing sample, an acoustic sensor communicably coupled to the testing sample, and a load that is exerted on the sample. The sensor detects one or more acoustic events occurring within the sample. The acoustic transmits data to a data recorder, which includes a processor and storage medium for executing instructions provided by a software residing within the storage medium. Upon executing the instructions on the transmitted data, the toughness of the sample is objectively determined and can be ranked comparatively to the toughness of other samples. The instructions provide for categorizing the data into possible acoustic event points and background data points, interpolating a background noise curve, determining the actual acoustic event points, and calculating the area under each actual acoustic event point. In some embodiments, a graphical representation of the cumulative area for each actual acoustic event point is plotted against the corresponding load. | 10-06-2011 |
20120067652 | High Toughness Thermally Stable Polycrystalline Diamond - A mixture for fabricating a cutting table, the cutting table, and a method of fabricating the cutting table. The mixture includes a cutting table powder and a binder. The binder includes at least one carbide formed from an element selected from at least one of Groups IV, V, and VI of the Periodic Table. The carbide is in its non-stoichiometric and/or stoichiometric form. The binder can include the element. In certain embodiments, the binder includes one or more of the cutting table powder and a catalyst. The cutting table is formed by sintering the mixture using a solid phase sintering process or a near solid phase sintering process. When forming or coupling the cutting table to a substrate, a divider is positioned and coupled therebetween to ensure that the sintering process that forms the cutting table occurs using the solid phase sintering process or the near solid phase sintering process. | 03-22-2012 |
Patent application number | Description | Published |
20130239652 | VARIABLE FREQUENCY IMPACT TEST - A target cylinder, a method for testing a superhard component thereon, and a method for selecting an untested component for use in field applications. The target cylinder includes a first end, a second end, and a side wall extending from the first end to the second end. At least one of the second end and the sidewall is an exposed portion that makes contact with the superhard component to determine at least one property of the superhard component. The target cylinder is formed from a first material evenly distributed throughout a second material. Upon testing superhard components at one or more impact frequencies, untested superhard components are selected based upon field anticipated impact frequencies. | 09-19-2013 |
20130333297 | HIGH TOUGHNESS THERMALLY STABLE POLYCRYSTALLINE DIAMOND - A mixture for fabricating a cutting table, the cutting table, and a method of fabricating the cutting table. The mixture includes a cutting table powder and a binder. The binder includes at least one carbide formed from an element selected from at least one of Groups IV, V, and VI of the Periodic Table. The carbide is in its non-stoichiometric and/or stoichiometric form. The binder can include the element. In certain embodiments, the binder includes one or more of the cutting table powder and a catalyst. The cutting table is formed by sintering the mixture using a solid phase sintering process or a near solid phase sintering process. When forming or coupling the cutting table to a substrate, a divider is positioned and coupled therebetween to ensure that the sintering process that forms the cutting table occurs using the solid phase sintering process or the near solid phase sintering process. | 12-19-2013 |
20130333954 | PCD CUTTERS WITH IMPROVED STRENGTH AND THERMAL STABILITY - A thermally stable polycrystalline diamond cutter and method for fabricating the same. The cutter includes a substrate and a cutting table bonded thereto. The cutting table includes a cutting surface, a first beveled edge, a second beveled edge, a side surface, and an opposing surface that is adjacent to the substrate. The first beveled edge extends outwardly at a first angle from the cutting surface towards the substrate. The second beveled edge extends outwardly at a second angle from the first beveled edge towards the substrate. The side surface extends from the second beveled edge to the opposing surface. The cutting table is formed from a polycrystalline diamond structure having interstitial spaces disposed therebetween and a catalyst material disposed within the spaces in an untreated layer and not within a treated layer. The untreated layer includes the entire side surface. | 12-19-2013 |
20130341102 | Methods To Repair Worn Or Eroded PDC Cutters, Cutters So Repaired, And Use Of Repaired PDC Cutters In Drill Bits Or Other Tools - A repaired polycrystalline diamond cutter and method for fabricating the same. The cutter includes a damaged substrate that includes at least one void therein, a polycrystalline diamond table coupled to the damaged substrate, and a build-up compound disposed within the voids formed about the damaged substrate. The damaged substrate and the build-up compound collectively form a full circumference. The method includes obtaining a damaged cutter that includes a polycrystalline diamond table coupled to a damaged substrate having at least one void formed therein, bonding a build-up compound within the at least one void and forming a processed PDC cutter, and removing a portion of the build-up compound from the processed PDC cutter and forming the repaired cutter. | 12-26-2013 |
20140062509 | Method and Apparatus to Assess the Thermal Damage Caused to a PCD Cutter Using Capacitance Spectroscopy - A method and apparatus for non-destructively determining the wear resistance of an ultra-hard polycrystalline structure after being coupled to a downhole tool using capacitance measurements. The apparatus includes a capacitance measuring device having a positive and negative terminal, a leached component comprising a polycrystalline structure that has been coupled to a downhole tool, a first wire, and a second wire. The first wire electrically couples the positive terminal to a surface of the leached component and the second wire electrically couples the negative terminal to a surface of the downhole tool. The capacitance is measured for the leached component one or more times and compared to a calibration curve that shows a relationship between capacitance values and wear resistance, thereby allowing determination of an estimated wear resistance for the polycrystalline structure. | 03-06-2014 |
20140131115 | Method For Reducing Intermetallic Compounds In Matrix Bit Bondline - An apparatus and method for manufacturing a downhole tool that reduces failures occurring along a bondline between a cemented matrix coupled around a blank. The cemented matrix material is formed from a tungsten carbide powder, a shoulder powder, and a binder material, wherein at least one of the tungsten carbide powder or the shoulder powder is absent of any free tungsten. The blank, which optionally may be coated, is substantially cylindrically shaped and defines a channel extending from a top portion and through a bottom portion of the blank. The absence of free tungsten from at least one of the tungsten carbide powder or the shoulder powder reduces the reaction with iron from the blank, thereby allowing the control and reduction of intermetallic compounds thickness within the bondline. | 05-15-2014 |
20140158436 | Methods To Repair Worn Or Eroded PDC Cutters, Cutters So Repaired, And Use Of Repaired PDC Cutters In Drill Bits Or Other Tools - A repaired polycrystalline diamond cutter and method for fabricating the same. The cutter includes a damaged substrate that includes at least one void therein, a polycrystalline diamond table coupled to the damaged substrate, and a paste compound disposed within the voids formed about the damaged substrate. The damaged substrate and the paste compound collectively form a full circumference. The method includes obtaining a damaged cutter that includes a polycrystalline diamond table coupled to a damaged substrate having at least one void formed therein, applying a paste compound within the at least one void, melting the paste compound via induction heating, bonding the paste compound to the substrate and forming a processed PDC cutter, and grinding at least a portion of the paste compound from the processed PDC cutter to form the repaired cutter. | 06-12-2014 |
20140253149 | Non-Destructive Leaching Depth Measurement Using Capacitance Spectroscopy - A method of characterizing a quality of a polycrystalline diamond compact (PDC) cutter includes obtaining a PDC cutter that includes a leached layer and an unleached layer. The unleached layer is positioned adjacent to the leached layer, and the leached layer has at least a portion of a catalyst material removed from therein. The method further includes measuring capacitance values of the PDC cutter at multiple frequencies of an electrical signal provided to the PDC cutter by a capacitance measuring device to measure the capacitance values of the PDC cutter. The method also includes characterizing a quality of the PDC cutter based on a lowest capacitance value from among the capacitance values. Each capacitance value of the capacitance values is measured at a respective frequency of the multiple frequencies of the electrical signal. | 09-11-2014 |
20150075252 | Method Of Determining Wear Abrasion Resistance Of Polycrystalline Diamond Compact (PDC) Cutters - The present disclosure provides methods and techniques for determining wear abrasion resistance of superhard components, such as cutters used in down-hole drilling tools. The methods and techniques provided herein produce an efficiency ratio of a superhard component through data obtained from a vertical turret lathe test. The efficiency ratio is the ratio between the volume of a target cylinder removed by the superhard component during the vertical turret lathe test and the normal force applied onto the superhard component by the target cylinder. The efficiency ratio is indicative of the energy efficiency of the superhard component. | 03-19-2015 |
20150209837 | APPARATUS TO IMPROVE THE PERFORMANCE OF A LEACHED CUTTER - A cleaned component having a polycrystalline structure, a method and apparatus for cleaning a leached component to form the cleaned component, and a method for determining the effectiveness of cleaning the leached component. The cleaned component includes a leached layer that has at least a portion of by-product materials removed. The by-product materials were deposited into the leached layer during a leaching process that formed the leached layer. The apparatus and method for cleaning includes a tank, a cleaning fluid placed within the tank, and at least a portion of the leached layer immersed into the cleaning fluid. Optionally, a transducer emits ultrasonic waves into the leached layer. The method for determining the effectiveness of cleaning includes cleaning the leached component to form the cleaned component, measuring one or more capacitance values of the cleaned component, repeating the cleaning and the measuring until achieving a stable lower limit capacitance value. | 07-30-2015 |
20150240566 | MANUFACTURE OF LOW COST BITS BY INFILTRATION OF METAL POWDERS - An apparatus and method for manufacturing a downhole tool. The cemented matrix material is formed from a metal powder, a shoulder powder, and a binder material, wherein the metal powder and/or the shoulder powder includes at least one of stainless steel powder, nickel powder, cobalt powder, iron powder, or powders of other suitable metals or alloys, or a combination of such mentioned powders. | 08-27-2015 |
20150259985 | SHORT MATRIX DRILL BITS AND METHODOLOGIES FOR MANUFACTURING SHORT MATRIX DRILL BITS - A short matrix drill bit is disclosed along with methods of manufacturing the same. The Short drill matrix bit includes a combination shank/blank bonded to a matrix. The combination shank/blank includes a blank portion and a shank portion, which are formed as a unitary component. The combination shank and blank may also include an outer layer formed along at least a portion of the combination shank/blank. In some instances, the outer layer is nickel plating, or some other suitable material, which facilitates wetting of the binder material used to form the matrix. | 09-17-2015 |
20160107293 | HIGH TEMPERATURE HIGH HEATING RATE TREATMENT OF PDC CUTTERS - A post manufacture method and apparatus for reducing residual stresses present within a component. The component includes a substrate, a polycrystalline structure coupled thereto, and residual stresses present therein. The method includes obtaining a component from a component category, determining a critical temperature and a critical time period for the component category at which the component becomes structurally impaired, determining a heat treatment temperature and a heat treatment time period based upon the critical temperature and the critical time period, and heating one or more remaining components from the component category to the heat treatment temperature for the heat treatment time period. The apparatus includes a heater defining a heating chamber and a molten bath positioned within the heating chamber. The components are placed within the pre-heated molten bath and isolated from oxygen during heating to the heat treatment temperature for the heat treatment time period. | 04-21-2016 |
Patent application number | Description | Published |
20090076223 | SHAPE MEMORY POLYMER WITH POLYESTER AND POLYACRYLATE SEGMENTS AND PROCESS FOR ITS PRODUCTION AND PROGRAMMING - The invention relates to a shape memory polymer, to a process for its production and to a process for its programming. The inventive shape memory polymer has at least two switching segments with different transition temperatures (T | 03-19-2009 |
20090209717 | Shape Memory Polymer with Polyester and Polyether Segments and Process for Its Preparation and Programming - The invention relates to a shape memory polymer, to a process for its preparation, to a process for its programming and to its use. The inventive shape memory polymer has at least two switch segments with different transition temperatures (Ttrans, | 08-20-2009 |
20100044920 | METHOD FOR THE ONE-STEP PROGRAMMING OF THE THREE-SHAPE PLASTICS - The invention relates to a method for producing a programmed shape memory polymer, which assumes a first temporary shape and at least two additional stored thermally activatable shapes, namely at least one second temporary shape and a permanent shape, with the steps of:
| 02-25-2010 |
20100190877 | BEAD FOAM MOLDINGS COMPOSED OF EXPANDABLE ACRYLONITRILE COPOLYMERS - Bead foam moldings obtainable by fusing prefoamed foam beads composed of expandable thermoplastic polymer granules, comprising | 07-29-2010 |
20110008608 | COMPOSITE MOLDING IN PARTICULAR FOR FURNITURE CONSTRUCTION - A composite molding, in particular for furniture construction, comprises a core layer and one or more further layers, where the core layer takes the form of a molded-foam molding, obtainable via fusion of prefoamed foam beads composed of expandable, thermoplastic polymer pellets comprising
| 01-13-2011 |
20110042606 | PS FOAMS WITH LOW METAL CONTENT - The present invention relates to an expandable styrene polymer, comprising at least one flame retardant as component (A), from 0.0001 to 2% by weight, based on component (A), of at least one metal as component (B), and athermanous particles as component (C), to a process for the production of this expandable styrene polymer, to an expanded styrene polymer bead, comprising at least one flame retardant as component (A), from 0.0001 to 2% by weight, based on component (A), of at least one metal as component (B), and athermanous particles as component (C), to a process for the production of this expanded styrene polymer bead, to a foam, capable of production from this expandable styrene polymer, to a process for the production of this foam, and also to the use of this foam for thermal insulation, including that of machines and of household devices, and as packaging material. | 02-24-2011 |
20110196053 | HALOGEN-FREE, PHOSPHORUS-CONTAINING FLAME-RETARDANT POLYMER FOAMS - A polymer foam with density in the range from 5 to 120 kg/m | 08-11-2011 |
20110230578 | FLAME-RETARDANT COMPOSITE FOAM - A composite foam comprising
| 09-22-2011 |
20110245360 | FLAME RETARDANT - A flame retardant comprising
| 10-06-2011 |
20110287066 | Nanoporous Foamed Active Compound-Containing Preparations Based On Pharmaceutically Acceptable Thermoplastically Workable Polymers - Process for the production of nanoporous foamed active substance-containing preparations, wherein the active substance is present embedded in a pharmaceutically acceptable polymer, wherein, in stage a) loading of a polymeric molding composition or a polymer melt with a propellant is effected at a pressure and at a temperature at which the propellant is in the supercritical state, in stage b) heating of the laden polymer molding compound or melt is carried out under pressure at a temperature which lies in the range from −40 to +60° C., preferably −20 to +55° C., and especially preferably 0 to +50° C. around the glass transition temperature of the unladen (prior to loading) polymeric molding compound and in stage c) a depressurization of the polymeric molding compound or melt laden in stage a) and heated under pressure in stage b) is effected out with a depressurization rate in the range from 15,000 to 200,000 MPa/sec. | 11-24-2011 |
20110288181 | PREPARATIONS OF BIOLOGICALLY ACTIVE SUBSTANCES WITH ENLARGED SURFACE BASED ON AMPHIPHILIC COPOLYMERS - Preparations with enlarged surface comprising an active ingredient and an amphiphilc copolymer, wherein the copolymer comprises at least one polyether-containing graft polymer. The preparations are partially or completely foamed. Processes for producing the preparations are also described, including processes comprising extrusion of a melt impregnated with a physiologically acceptable volatile blowing agent. | 11-24-2011 |
20120035286 | POLYMER MIXTURES COMPRISING HALOGEN - The invention relates to polymer mixtures comprising at least one polymer, at least one organic halogenated compound such as halogenated flame retardants and also at least one further compound to thermally stabilize the organic halogenated compound, this further compound having a saponification number of 80 to 300 mg KOH/g and an OH number of 200 to 800 mg KOH/g. | 02-09-2012 |
20120087823 | METHOD FOR PRODUCING POROUS METAL SINTERED MOLDED BODIES - The invention relates to a method for producing porous metal sintered molded bodies, wherein expandable polymer particles, in which a sinterable metal powder is dispersed, are expanded to form a molded body. The molded body is subjected to a heat treatment, wherein the polymer is expelled and the sinterable metal powder is sintered to form a porous metal sintered molded body. Preferably, styrol polymers are used. The sinterable metal powder is selected, for example, from aluminum, iron, copper, nickel, and titanium. | 04-12-2012 |
20120161061 | EXTRUDED SAN FOAMS - Closed-cell extruded foam extruded foam with density in the range from 20 to 150 g/l and with a cell number in the range from 1 to 30 cells per mm is obtainable via
| 06-28-2012 |
20120172467 | FLAME RETARDANT SYSTEM - The invention relates to a flame retardant comprising
| 07-05-2012 |
20120178842 | HALOGEN-FREE, FLAME-PROOF POLYMER FOAMS CONTAINING AT LEAST ONE OLIGOPHOSPHORUS COMPOUND - Halogen-free, flame-retardant polymer foams which comprise, as flame retardant, at least one cyclic or acyclic oligophosphorus compound, and processes for their production. Examples of suitable oligophosphorus compounds are those having the structure Ia, Ib, or Ic: | 07-12-2012 |
20120252911 | FLAME RETARDANT - Use of a phosphorus compound of the formula (I) as flame retardant, | 10-04-2012 |
20120252914 | FLAME-PROTECTED POLYMER FOAMS - Flame-retardant polymer foams which comprise, as flame retardant, at least one halogenated polymer, for example brominated polystyrene or styrene-butadiene block copolymer having bromine content in the range from 40 to 80% by weight, or tetrabromobisphenol A compounds (TBBPA), processes for producing these, and also flame-retardant expandable styrene polymers. | 10-04-2012 |
20120283345 | HEAT-RESISTANT AND FLAME-RETARDANT EXTRUDED FOAM MADE OF STYRENE COPOLYMERS - The invention is directed to extruded foam based on thermoplastic polymers. The foam contains at least one styrene copolymer which contains copolymerized maleic anhydride units or copolymerized maleimide units, and optionally styrene-acrylonitrile copolymers (SAN), and thermoplastic polymers and at least one halogen-containing polymer as flame retardant, and at least one flame retardant synergist selected from antimony trioxide and dicumyl. The invention also relates to a process for producing the foam with introducing carbon dioxide as blowing agent, and acetone as coblowing agent; into the polymer melt in order to form a foamable melt, and extruding the foamable melt into a region of relatively low pressure with foaming to give the extruded foam. The invention also relates to the use of said foam as insulation material and as structural foam. | 11-08-2012 |
20130030066 | POLYMERIC FLAME RETARDANT - The invention relates to a polymer composition containing
| 01-31-2013 |
20130059933 | EXPANDABLE THERMALLY-STABLE STYRENE COPOLYMERS - A process for producing an expandable pelletized polymeric material which comprises:
| 03-07-2013 |
20130150468 | METHOD FOR PRODUCING EXPANDABLE GRANULATES CONTAINING POLYLACTIC ACID - The invention relates to a process for producing expandable pelletized material which comprises polylactic acid which comprises the following steps:
| 06-13-2013 |