| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 04/29/2003 | US6555800 Process and apparatus for the induction hardening of crankshafts |
| 04/29/2003 | US6554926 Quenching heated metallic objects |
| 04/29/2003 | US6554925 Method for manufacturing cold-rolled steel sheet |
| 04/29/2003 | US6554924 Metallic diffusion process and improved article produced thereby |
| 04/29/2003 | US6554922 Method and apparatus for determining the cooling action of a flowing gas atmosphere on workpieces |
| 04/29/2003 | US6554919 Also good molding characteristics to produce parts by stamping, profiling and hydroforming |
| 04/24/2003 | WO2003033757A1 Method for producing nitriding steel |
| 04/24/2003 | WO2003033185A1 Method of manufacturing steel plate |
| 04/24/2003 | WO2003033182A2 Device and method for the production of flat metal |
| 04/24/2003 | WO1996002676A8 Cold formed high-strength steel structural members |
| 04/24/2003 | US20030075250 Bar or wire product for use in cold forging and method for producing the same |
| 04/23/2003 | EP1304392A2 Apparatus and method for quenching thin-walled metal hollow casing |
| 04/23/2003 | CN2546455Y Long chamber seal heating tank for heat treatment |
| 04/23/2003 | CN1106451C Method for performing heat treatment on metallic rings, and bearing ring thus obtained |
| 04/22/2003 | US6552280 Surface-hardened austenitic stainless steel precision weight and process of making same |
| 04/17/2003 | WO2003031661A1 Heat treatment method |
| 04/17/2003 | WO2003031660A1 High-hardness, highly ductile ferrous articles |
| 04/17/2003 | US20030070737 High-hardness, highly ductile ferrous articles |
| 04/17/2003 | US20030070736 Metal working by austenitizing a steel chain link, heating in a thermal bath, quenching to convert remaining austenite to martensite, and deforming; tensile strength, hardness, ductility and fatigue life |
| 04/17/2003 | DE10212820C1 Electrical resistance heating of a metal workpiece uses electrodes to pre-heat regions having a larger cross-section relative to the other regions to a defined temperature level before the entire workpiece is heated |
| 04/17/2003 | DE10162702C1 Process for avoiding adhering and scratching during recrystallization annealing of cold strips in a hood type furnace in a protective gas containing hydrogen comprises subjecting the cold strip to an atmosphere adjusted using an oxidant |
| 04/17/2003 | DE10137776C1 Verfahren zur Erzeugung von verschleissbeständigen Randschichten A process for producing surface layers WEAR |
| 04/16/2003 | EP1301648A1 Coil spring from an alloy steel and method for producing such coil springs |
| 04/16/2003 | EP1301639A2 Method and apparatus for the direct production of scale-free thin metal strip |
| 04/16/2003 | CN2545212Y Improved continuous carbonizing quenching furnace conveyer roller |
| 04/16/2003 | CN1411613A Device and method for tempering several process goods |
| 04/16/2003 | CN1105784C Method of soft annealing high carbon steel |
| 04/15/2003 | US6548793 Comprises inductor coil or loop disposed between gear teeth to induce magnetic flux directly/uniformally |
| 04/15/2003 | US6547898 Method of making safe a heat treatment enclosure operating under a controlled atmosphere |
| 04/15/2003 | US6547897 Immersing rail head at temperature of above 720 degrees C in cooling agent that contains synthetic additive, withdrawing rail head from cooling agent upon obtaining surface temperature of rail head of 450-550 degrees C |
| 04/15/2003 | US6547890 Steel wire rod for cold forging and method for producing the same |
| 04/15/2003 | US6547888 Modified low temperature case hardening processes |
| 04/15/2003 | US6547846 Wear resistance, hardness, impact strength; powder metallurgy |
| 04/15/2003 | US6547556 Combination conduction/convection furnace |
| 04/15/2003 | US6547442 Rolling bearing |
| 04/15/2003 | US6546808 Method of evaluating high fatigue strength material in high tensile strength steel and creation of high fatigue strength material |
| 04/10/2003 | WO2003028912A2 Method and system for thermal treatment of rails |
| 04/10/2003 | US20030067376 Inductor for heating inner-circumference of hole |
| 04/10/2003 | US20030066582 Hot forming using press mold, hardening; calibration shapes |
| 04/10/2003 | US20030066581 Hot forming using press mold, hardening; calibration shapes |
| 04/10/2003 | US20030066576 Quenched and tempered steel wire with excellent cold forging properties |
| 04/09/2003 | EP1300484A1 Method for the heat treatmant of metallic slugs |
| 04/09/2003 | EP1300482A1 Hot-work tool-steel article |
| 04/09/2003 | EP1300478A1 Process and device for accelerated cooling in a continuous annealing line |
| 04/09/2003 | EP1300477A1 Continuous annealing process for obtaining an improved surface appearance |
| 04/09/2003 | EP1300476A2 Process for manufacturing a hardened sheet metal profile |
| 04/09/2003 | EP1300475A2 Process for manufacturing a hardened sheet metal profile |
| 04/09/2003 | EP1129229B1 Steel, use of the steel, product made of the steel and method of producing the steel |
| 04/09/2003 | EP0904154A4 Comminuting media comprising martensitic/austenitic steel containing retained work-transformable austenite |
| 04/09/2003 | CN1105286C Safety system for rapid-cooling ovens for metal strip |
| 04/09/2003 | CN1105190C Method and apparatus for heat treating steel |
| 04/08/2003 | US6544669 Cryogenic treatment of cookware and bakeware |
| 04/03/2003 | WO2003027349A2 Method for heat-treating work pieces made of temperature-resistant steels |
| 04/03/2003 | WO2003027336A1 Jig for heat treatment of work |
| 04/03/2003 | WO2003026813A1 Method and device for cooling steel sheet |
| 04/03/2003 | WO2002064851A3 Metallic diffusion process and improved article produced thereby |
| 04/03/2003 | US20030062147 Method of continuously casting electrical steel strip with controlled spray cooling |
| 04/03/2003 | DE10212400C1 Production of molded components comprises cold forming and induction heating of molding to produce recrystallization along seam and lower resistance to further working and cooling |
| 04/03/2003 | DE10141645C1 Apparatus for hardening bearing surfaces of rotating crankshaft has inductors for heating surfaces, monitor detecting angle of rotation of shaft feeding signals to control unit which raises or lowers inductors |
| 04/02/2003 | EP1298225A1 Method for producing unidirectional silicon steel sheet free of inorganic mineral coating film |
| 04/02/2003 | EP1296798A1 Method and apparatus for flexible manufacturing a discrete curved product from feed stock |
| 04/02/2003 | EP1153527A4 High efficiency induction melting system |
| 04/02/2003 | EP0956378B1 Laser induced improvement of surfaces |
| 04/01/2003 | US6540848 High strength, high toughness, seamless steel pipe for line pipe |
| 04/01/2003 | US6540847 Rolling structure steel |
| 03/27/2003 | WO2003025233A1 Steel parts and method for heat-treating steel parts |
| 03/27/2003 | US20030060306 Laser surface modified golf club heads |
| 03/27/2003 | US20030057263 Method of brazing and article made therefrom |
| 03/27/2003 | DE10208216C1 Production of a hardened metallic component used as vehicle component comprises heating a plate or a pre-molded component to an austenitizing temperature, and feeding via a transport path while quenching parts of plate or component |
| 03/26/2003 | EP1294528A1 Method of brazing and article made therefrom |
| 03/26/2003 | EP1294511A1 Method of production of surface densified powder metal components |
| 03/26/2003 | EP1045737B1 Process and device for producing a high-strength steel strip |
| 03/26/2003 | EP0835329B1 Hi-density sintered alloy and spheroidization method for pre-alloyed powders |
| 03/26/2003 | CN2541467Y Continuous lustrous heat treatment cooling furnace |
| 03/26/2003 | CN1405862A Laser annealing device and semiconductor device manufacture method |
| 03/26/2003 | CN1405335A Modified wire material with good cold-forging characteristic |
| 03/26/2003 | CN1405334A Large-sized oil-quenching tank fume-collecting and fire-extinguishing mechanism |
| 03/26/2003 | CN1404954A Flexible lamina for laser impact treatment |
| 03/26/2003 | CN1103823C Method for annealing an amorphous alloy and method for manufacturing a marker |
| 03/25/2003 | US6537397 Process for producing Fe-based member having high young's modulus, and Fe-based member having high young's modulus and high toughness |
| 03/25/2003 | US6537391 Steel with improved impact penetration resistance and method for producing the same |
| 03/25/2003 | US6537374 Method and system for cooling strip material |
| 03/25/2003 | US6536110 Providing a hub section formed from a metal alloy; welding an airfoil formed from a metal alloy to hub section; solution treating, heating, oil quenching prior to welding |
| 03/20/2003 | WO2003023076A2 Device for quenching and tempering long-length rolling stock |
| 03/20/2003 | WO2003023074A1 Method of continuously casting electrical steel strip with controlled spray cooling |
| 03/20/2003 | US20030052123 Placing a non-magnetic conductive shield in proximity to a current concentrating surface of a gear and exposing the gear with a shield in place to a time varying magnetic field; shield protects the gear from overheating |
| 03/19/2003 | EP1293578A2 Quenched and tempered steel wire with excellent cold forging properties |
| 03/19/2003 | EP1293577A2 Induction processing with the aid of a conductive shield |
| 03/19/2003 | CN1403601A Periodical stepped quenching cooling equipment |
| 03/19/2003 | CN1403600A Heat treatment process for LD steel powder metallurgy die in complicated shape |
| 03/19/2003 | CN1403599A Heat treating process and inductor for key surface of hub |
| 03/19/2003 | CN1403598A Laser phase change reinforcing method to reinforce gradient structure |
| 03/18/2003 | WO2002024968A1 Steel plate excellent in shape freezing property and method for production thereof |
| 03/18/2003 | US6533996 Cooling atmosphere comprising hydrogen is used for accelerated cooling of processed metal part in furnace, resulting in improved properties for metal part |
| 03/18/2003 | US6533991 Cooling gas injection nozzle for a vacuum heat treating furnace |
| 03/14/2003 | CA2357452A1 Steel strapping |
| 03/13/2003 | US20030047852 Device for tempering rolled stock of great length |
| 03/13/2003 | US20030047255 Process for the hot-dip galvanizing of metal strip made of high-strength steel |
| 03/13/2003 | US20030047242 Hot forging the steel; machining and optionally piercing the forged product; carburizing and quenching and tempering the machined steel to attain an effective case depth of 0.4 to 0.9 mm |
| 03/12/2003 | EP1291448A1 Cold rolled steel sheet and galvanized steel sheet having strain aging hardening property and method for producing the same |