| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 06/26/1997 | WO1997022430A1 Method for forming a cracking site for fracture separation of a component, in particular a connecting rod for internal combustion engines |
| 06/26/1997 | DE19617402A1 Production of weak spot in a connection component |
| 06/26/1997 | DE19547690A1 Heat treatment of a plastically deformable workpiece |
| 06/25/1997 | EP0780492A1 Removal of oil from metallic objects by evaporation |
| 06/25/1997 | EP0779937A1 Process for case hardening higher molybdenum-alloyed sintered steels |
| 06/25/1997 | CN1152625A Oil tempering steel wire and making method thereof |
| 06/24/1997 | US5640872 Process and device for cooling heated metal plates and strips |
| 06/18/1997 | CN1152031A Prodn process of biphase cast steel hook |
| 06/17/1997 | US5639012 Process and device for the posttreatment of welded compound panels |
| 06/12/1997 | WO1997020957A1 Edge hardening of chain saw guide bars |
| 06/12/1997 | WO1997020955A2 Skid mounted precision heat treat system |
| 06/12/1997 | CA2239214A1 Edge hardening of chain saw guide bars |
| 06/12/1997 | CA2237562A1 Skid mounted precision heat treat system |
| 06/11/1997 | EP0778354A1 Process for supplying controlled atmosphere gases into a heat treatment furnace and heat treatment plant |
| 06/11/1997 | EP0778353A1 Heat treating method |
| 06/11/1997 | EP0777752A1 Warm forming high-strength steel structural members |
| 06/11/1997 | CN2255983Y Circular heating chamber of heat treating furnace |
| 06/11/1997 | CN1151765A Method of increasing the yield strength of cold formed steel sections |
| 06/11/1997 | CN1151441A Piston processing method |
| 06/11/1997 | CN1151440A Method and apparatus for controlled turbulent purging of open containers |
| 06/05/1997 | DE19629332C1 Piston cylinder running surface |
| 06/05/1997 | DE19545101A1 Method and apparatus for cooling cast and rolled metal products |
| 06/04/1997 | EP0776381A1 Method for heat treating a metal component |
| 06/04/1997 | EP0776380A1 Surface treated iron bearing element |
| 06/04/1997 | CN1151189A Sealing device for zone outlet/inlet of atmosphere equipment |
| 06/03/1997 | US5635089 Ceramic, metal and composite materials having increased surface area |
| 05/30/1997 | CA2164021A1 Surface treatment of stainless steel |
| 05/28/1997 | DE19619171C1 Method of heat treatment of welded connections of rail tracks |
| 05/28/1997 | CN1150825A Equipment for manufacturing stainless steel strip |
| 05/20/1997 | US5631093 Magnetically coded device |
| 05/20/1997 | US5630957 Control of power to an inductively heated part |
| 05/20/1997 | US5630953 Method of fine-machining a workpiece surface to be supplied with a lubricant during operation of the workpiece |
| 05/20/1997 | US5630322 Process and apparatus for heat treatment of workpieces by quenching with gases |
| 05/15/1997 | WO1997017197A1 Stainless steel surface claddings of continuous caster rolls |
| 05/07/1997 | EP0771226A1 Process for producing a ski edge |
| 05/07/1997 | EP0547097B1 Method of hardening corrugating rolls |
| 05/07/1997 | DE19644967A1 Method for manufacturing of drive roller for Torus-type stageless gear |
| 05/07/1997 | DE19541097A1 Hardening cutting tools with electron beams |
| 05/07/1997 | CN1034817C Method for treating roller surface by laser |
| 05/06/1997 | US5628045 Process and device for producing sintered parts |
| 05/06/1997 | US5626974 High carbon steel, surface carbonitride |
| 05/06/1997 | US5626693 Applying a constraining force on tubes while quenching to prevent warping |
| 05/02/1997 | EP0770692A1 Sealing device for zone outlet/inlet of continuous heat treatment furnace, continuous vacuum evaporation equipment and the like |
| 05/02/1997 | EP0770691A1 Apparatus for thermal treatment of metallic workpieces |
| 04/30/1997 | DE19539790A1 Attaching structures to duplex stainless steel plates by stud welding |
| 04/30/1997 | CN1034745C Method for nitriding austenitic stainless steel products |
| 04/29/1997 | US5624507 System for production of a quenchant gas mixture |
| 04/29/1997 | US5624255 Multipurpose controlled atmosphere heat treatment system |
| 04/24/1997 | DE19628136C1 Production of grain-orientated electrical sheets |
| 04/23/1997 | EP0769073A1 Cold formed high-strength steel structural members |
| 04/23/1997 | EP0699243B1 Thermal treatment device for metallic workpieces |
| 04/23/1997 | CN1148091A Method for medium frequency quenching cam |
| 04/22/1997 | US5622572 Extra-strength steel and method of making |
| 04/17/1997 | DE19538364A1 Device for rapidly heating metal bolts during extrusion |
| 04/16/1997 | EP0767867A1 Turbine vane flow area restoration method |
| 04/16/1997 | EP0767718A1 Method and apparatus for joining metal components |
| 04/16/1997 | CN1147608A Structure of oscillating snifting regulating valve |
| 04/10/1997 | WO1997013258A1 Heat-treatment of glassy metal alloy for article surveillance system markers |
| 04/10/1997 | DE19536931A1 Producing inert gas atmosphere |
| 04/09/1997 | EP0767353A1 Method to equalise the temperature in a heating furnace with a controlled-oxidisation ambient and heating furnace carrying out the method |
| 04/09/1997 | EP0767140A1 Process for the recovery of salt components from hardening salt baths |
| 04/09/1997 | EP0621904B1 Device for heat-treating metal workpieces |
| 04/09/1997 | CN1147278A Sealing device for zone outlet/inlet of continuous heat treatment furnace, continuous vacuum evaporation equipment and the like |
| 04/09/1997 | CN1147019A Bluing and low-carbon martensite heat treatment of high strength building steel bar |
| 04/08/1997 | US5618355 High-strength steel sheet suitable for deep drawing and process for producing the same |
| 04/07/1997 | CA2187053A1 Process for recovering the salt constituents from hardening-shop salt baths |
| 04/03/1997 | DE19627749C1 Treatment of chromium@-alloyed steel parts |
| 04/02/1997 | EP0765942A1 Process for heat treating steel rails |
| 04/02/1997 | EP0765698A1 Method of producing metal constructional elements with differential wall thickness |
| 04/02/1997 | CN2250960Y High-strength hardening apparatus for surface of steel-casting |
| 04/02/1997 | CN1146499A Cold-moulding die steel of medium-carbon high-alloyc arburization |
| 04/01/1997 | US5616297 Annealing base for hood-type annealing furnaces |
| 04/01/1997 | US5616187 Alloy subjected to austenization and tempering |
| 04/01/1997 | CA2047793C Apparatus for continuously cooling metal strip |
| 03/26/1997 | EP0764822A1 Method and apparatus for controlled turbulent gas purging of open containers |
| 03/25/1997 | US5614039 Argon employing heat treating process |
| 03/25/1997 | US5613453 Method and apparatus for containing and suppressing explosive detonations |
| 03/25/1997 | CA2080551C Light beam heating system |
| 03/21/1997 | CA2185191A1 Thermal treatment process for steel tracks |
| 03/19/1997 | EP0763603A1 Sealing device for zone outlet/inlet of atmosphere equipment |
| 03/19/1997 | EP0763177A1 Holder for workpieces with a non-ideal rigidity |
| 03/19/1997 | EP0763140A1 Method of increasing the yield strength of cold formed steel sections |
| 03/18/1997 | US5613185 Preconditioning by adding oxidizer |
| 03/18/1997 | US5611872 Magnetic strips and methods for making the same |
| 03/18/1997 | US5611871 Method of producing nanocrystalline alloy having high permeability |
| 03/18/1997 | US5611143 For use in a calendar |
| 03/18/1997 | CA2073097C Multi-layer fluid curtains for furnace openings |
| 03/14/1997 | CA2183724A1 Method to equalise the temperature in a heating furnace with a controlled-oxidisation ambient and heating furnace carrying out the method |
| 03/13/1997 | DE19532938A1 Sludge remover for mixed salt liq. |
| 03/12/1997 | EP0761829A1 Cooling device for rolled products |
| 03/12/1997 | EP0760720A1 Process for producing sturdy, wear-resistant rotating wire, rope and/or cable running surfaces, especially surfaces of wire drawing drums of wire drawing machines or similar conveyor rollers or drums |
| 03/12/1997 | CN2249250Y Salt bath furnace quenching press |
| 03/11/1997 | US5609785 Method and apparatus for improving the performance of a heating furnace for metal slabs |
| 03/05/1997 | EP0760397A1 Equipment for manufacturing stainless steel strip |
| 03/05/1997 | EP0760396A1 Process for preventing adhesion of steel band during annealing |
| 03/05/1997 | EP0673443B1 Method of annealing steel strip in an annealing furnace without the formation of soot |
| 03/05/1997 | CN1144543A Steel material containing fine graphite particles uniformly dispersed therein and having excellent cold workability, machinability and hardenability and method of manufacturing the same |
| 03/04/1997 | US5607144 Furnace for reheating, holding and storing of metallurgical products |
| 03/04/1997 | US5606787 Continuous method for producing final gauge stainless steel product |
| 02/27/1997 | WO1997007362A1 Device for heat treatment |