Class / Patent application number | Description | Number of patent applications / Date published |
072038000 | WITH EXPOSURE OF WORK TO GAS, VAPOR, MIST, OR MODIFIED ATMOSPHERE | 9 |
20080276679 | Method for the Production of Hot-Rolled Steel Strip and Combined Casting and Rolling Plant for Carrying Out the Method - A method for the production of a hot-rolled steel strip from a steel melt in a continuous manufacturing process, with an uninterrupted strip runthrough, comprising continuously casting a steel strand in a continuous casting mold of a continuous casting plant, roll-forming the cast steel strand in a first group of roll stands into a pre-rolled hot strip, further roll-forming the pre-rolled hot strip in a second group of roll stands into a hot-rolled steel strip, setting the pre-rolled hot strip to a rolling temperature between the first group of roll stands and the second group of roll stands in a temperature setting device, and winding of the hot-rolled steel strip into bundles or the division of the hot-rolled steel strip into sheets. In order to increase flexibility in the production of different steel qualities and to keep investment costs and operating costs low, descaling the pre-rolled hot strip immediately before its entry into the temperature setting device, holding the pre-rolled hot strip in a protective gas atmosphere in the temperature setting device, and after the pre-rolled hot strip runs through the temperature setting device, roll-forming the strip immediately thereafter in the second group of roll stands. Further, a combined casting and rolling plant for carrying out the method is disclosed. | 11-13-2008 |
20100000279 | METHOD AND DEVICE FOR FORMING AN ESSENTIALLY FLAT METAL BLANK TO PRODUCE A THIN-WALLED, SHELL-TYPE BODY, AND THE USE OF SAME - The invention relates to a vacuum-assisted method and a device for forming an essentially flat blank ( | 01-07-2010 |
20110209511 | HYDROGEN-INDUCED DUCTILITY IN ALUMINUM AND MAGNESIUM ALLOYS - Ductility of a high-magnesium or high-aluminum content workpiece is increased during plastic deformation of the workpiece. When the workpiece is plastically deformed in a sealed chamber comprising a high concentration of dry hydrogen gas, the workpiece exhibits increased ductility compared to the ductility of a workpiece of identical composition that is similarly deformed in air. Enhanced ductility is quantified for several workpieces comprising aluminum and magnesium alloys in various forms including extruded sheets, drawn bars, rolled plates, and piston casts. Enhanced ductility is evident over a wide range of processing temperatures without a significant decrease in strength characteristics. | 09-01-2011 |
20110239720 | Production Method of Seamless Pipe or Tube, and Oxidizing Gas Supply Unit - A production method of a seamless pipe or tube according to the present invention comprises the steps of applying a lubricant containing carbon to a mandrel bar, producing a material pipe or tube with a mandrel mill using the mandrel bar to which the lubricant is applied, and reheating the material pipe or tube in a reheating furnace, wherein when a temperature of the material pipe or tube is 550° C. or higher and 1000° C. or lower in the reheating step, an oxidizing gas is fed into the material pipe or tube. | 10-06-2011 |
20110252849 | STEEL SHEET ANNEALING DEVICE, DEVICE FOR PRODUCING PLATED STEEL SHEET COMPRISING THE SAME, AND PRODUCTION METHOD FOR PLATED STEEL SHEET USING THE SAME - Provided is an annealing device which comprises at least one section and in which the at least one section is filled with a gas constituting a non-reducing atmosphere or a weakly reducing atmosphere, as well as a device for producing plated steel sheet comprising the annealing device, and a method for producing plated steel sheet by means of such a device to substantially improve the quality of plating onto hot-dipped steel sheet, including the plating properties, alloying properties, anti-pickup properties, plating adhesion properties, anti-flaking properties, anti-cratering properties and anti-ash properties, by using prior-art annealing equipment and heat-treatment cycle without any additional oxidation-reduction heat treatment process or large quantities of high-cost alloying elements. | 10-20-2011 |
20120192608 | THERMAL FORMING OF REFRACTORY ALLOY SURGICAL NEEDLES - A method of thermal forming of refractory alloy suture needles is disclosed. Needle blanks made from refractory alloys are used to form surgical needles, which are heated to a temperature above the ductile to brittle transition temperature but below the recrystallization temperature of the refractory alloy. The heated needle blanks are then mechanically formed into a surgical needle. | 08-02-2012 |
20130152650 | METHOD AND DEVICE FOR TREATMENT OF CONTINUOUS OR DISCRETE METAL PRODUCTS - A method for heating an elongated metal product includes heating at a first heating location with at least one burner the metal product, and conveying combustion products from the burner through at least one channel, isolated from the metal product, from the first heating location to at least a second heating location arranged along a conveyor path for the combustion products to impinge upon an opposite surface of the metal product when the metal product passes the second heating location. A device for heating the elongated metal product is also provided. | 06-20-2013 |
20130205854 | Elevated temperature forming method and preheater apparatus - An elevated temperature forming system in which a sheet metal workpiece is provided in a first stage position of a multi-stage pre-heater, is heated to a first stage temperature lower than a desired pre-heat temperature, is moved to a final stage position where it is heated to a desired final stage temperature, is transferred to a forming press, and is formed by the forming press. The preheater includes upper and lower platens that transfer heat into workpieces disposed between the platens. A shim spaces the upper platen from the lower platen by a distance greater than a thickness of the workpieces to be heated by the platens and less than a distance at which the upper platen would require an undesirably high input of energy to effectively heat the workpiece without being pressed into contact with the workpiece. | 08-15-2013 |
20140137619 | HOT-PRESSING APPARATUS - Disclosed is a hot-pressing apparatus capable of quenching a workpiece at a sufficient cooling rate. The hot-pressing apparatus performs a hot-press forming of a workpiece using a lower die and an upper die, in which a cooling channel and a cooling channel, and a plurality of gas-introduction paths and a plurality of gas-introduction paths through which heat-conducting gas flows are provided in the lower die and the upper die. The plurality of gas-introduction paths penetrate through the dies. The hot-press forming is performed while the heat-conducting gas is supplied to the areas between the dies and the workpiece from the plurality of gas-introduction paths opening on the forming surfaces of the dies. | 05-22-2014 |