| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 04/21/1999 | CN1214375A Fe-W-Mo-Co type surface aged hardened alloy |
| 04/21/1999 | CN1214369A Anticorrosive treatment technology for complex board container |
| 04/21/1999 | CN1214368A Method of complete bainite hardening of steel |
| 04/21/1999 | CN1043058C Process and device for exchanging atmosphere in hood-type annealing furnace |
| 04/21/1999 | CN1043056C Anneal isolating objects with good reactivity for silica steel sheet and using method thereof |
| 04/20/1999 | US5895534 Method of increasing the yield strength of cold formed steel sections |
| 04/15/1999 | WO1998046943A9 Method and apparatus for containing and suppressing explosive detonations |
| 04/14/1999 | EP0908264A1 Apparatus for hardening the internal contour of a gun barrel with laser beam |
| 04/14/1999 | EP0907431A1 Process for shaping a flat metal workpiece |
| 04/14/1999 | EP0804308A4 Heat treating and removing cores from castings |
| 04/14/1999 | CN1214085A Ready-to-use metal wire and method for producing same |
| 04/14/1999 | CN1213702A Method of reducing quenching transshape of semi-pherical thin shell metal workpiece |
| 04/14/1999 | CN1213701A Production method of heat-treated member |
| 04/08/1999 | WO1999016921A1 Steel for oil well pipes with high wet carbon dioxide gas corrosion resistance and high seawater corrosion resistance, and seamless oil well pipe |
| 04/08/1999 | DE19750475C1 High temperature treatment of very small particles |
| 04/08/1999 | DE19743575A1 Apparatus for cooling in a two-phase mixture |
| 04/08/1999 | DE19742739A1 Method and apparatus for treatment of workpiece surfaces |
| 04/06/1999 | US5891275 Model-assisted process for the controlled cooling of hot strip and plate in a computer-guided rolling and cooling process |
| 04/06/1999 | US5891270 Heat-treatment of glassy metal alloy for article surveillance system markers |
| 04/06/1999 | CA2099761C Vehicle suspension member and method for making |
| 04/06/1999 | CA2046501C Anti-oxidation agent for continuous annealing of stainless steel strip and anti-oxidation method using the same |
| 04/01/1999 | WO1999002742A3 Method for manufacturing high magnetic flux density grain oriented electrical steel sheet based on low temperature slab heating method |
| 03/31/1999 | EP0905262A1 Heating method and heating apparatus |
| 03/31/1999 | EP0904423A1 Diffusion bonded sputtering target assembly with precipitation hardened backing plate and method of making same |
| 03/31/1999 | EP0904154A1 Comminuting media comprising martensitic/austenitic steel containing retained work-transformable austenite |
| 03/31/1999 | CN1212189A Process for manufacturing thin strip of ferritic stainless steel, and thin strip thus obtained |
| 03/31/1999 | CN1042749C Producing process for biphase cast steel hook for locomotive |
| 03/30/1999 | US5889253 Laser beam machining apparatus and method which employs a laser beam to pretreat and machine a workpiece |
| 03/30/1999 | US5887610 Method and plant for regulating the composition of the atmosphere in an enclosure |
| 03/30/1999 | CA2147940C Apparatus and method for the manufacture of dr steel strip |
| 03/30/1999 | CA2097151C Method for producing a selectively surface hardened cast iron part |
| 03/25/1999 | WO1999014383A1 Hot rolling high-strength steel structural members |
| 03/24/1999 | EP0903421A1 Ferritic heat-resistant steel and method for producing it |
| 03/24/1999 | EP0903420A2 Cobalt free high speed steels |
| 03/24/1999 | EP0903414A1 Device for the continuous heat treatment of steel strip or the like |
| 03/24/1999 | EP0815267B1 Process and device for increasing the degree of absorption during superficial solid phase hardening of workpieces by laser radiation |
| 03/24/1999 | EP0685696B1 Sealing device for doorways of partitions of continuous annealing furnace, continuous coating equipment, and the like |
| 03/24/1999 | CN1211632A Process for manufacturing carburized or carbonitrided steel component, and steel for manufacture of this component |
| 03/23/1999 | US5885522 Method and apparatus for heat treating and straightening structural members |
| 03/23/1999 | US5885382 Primary cooling method in continuously annealing steel strip |
| 03/23/1999 | US5885379 Tempered powdered metallurgical construct and method |
| 03/23/1999 | US5885370 Passing heat treated steel at or lower than curie temperature through strong magnetic field gradient to effect phase transformation |
| 03/23/1999 | US5884569 Method and apparatus for containing and suppressing explosive detonations |
| 03/18/1999 | WO1999013114A1 Pitting resistant duplex stainless steel alloy with improved machinability |
| 03/18/1999 | CA2297670A1 Pitting resistant duplex stainless steel alloy with improved machinability |
| 03/17/1999 | EP0902094A1 Process for manufacturing a mechanical workpiece with at least one part surface hardened by induction and workpiece obtained |
| 03/17/1999 | EP0901846A2 Pipe forming roll apparatus and method |
| 03/17/1999 | CN1211287A Diffusion bonded sputtering target assembly with precipitation hardened backing plate and method of making same |
| 03/17/1999 | CN1211285A Drawing stock for reinforcing plastic a rubber articles |
| 03/17/1999 | CN1210892A Quenching technology for surfaces of cylinder body, cylinder liner, crank axle and braking drum and equipment used thereof |
| 03/17/1999 | CN1210766A Machine frame for roller forming and forming method |
| 03/16/1999 | US5882438 Method for the formation of a frangible zone for the fracture separation of a machine part, in particular, a connecting rod for internal combustion engines |
| 03/11/1999 | WO1999011836A1 Steel wire and method of manufacturing the same |
| 03/11/1999 | WO1999011829A1 Method and device for thermal treatment of parts |
| 03/11/1999 | DE19738653A1 Verfahren und Vorrichtung zur Wärmebehandlung von Teilen Method and apparatus for heat treatment of parts |
| 03/10/1999 | EP0900852A2 Process for manufacturing gear wheels |
| 03/10/1999 | EP0900851A1 Production method of a heat-teated steel member |
| 03/10/1999 | EP0900850A2 Heat-treated steels with optimized toughness |
| 03/10/1999 | CN1210052A Method of manufacturing gear wheel |
| 03/09/1999 | US5881356 Method for the case-hardening of higher-molybdenum-alloy sintered steels |
| 03/09/1999 | US5881354 Sintered hi-density process with forming |
| 03/09/1999 | US5879480 Melting a high speed steel along the surface of the machine component |
| 03/09/1999 | US5879474 Producing wear and rolling contact fatigue resistant rail by hot rolling steel of specified composition, cooling naturally in air or by accelerated cooling |
| 03/04/1999 | WO1999010899A1 Continuous transverse magnetic field annealing of amorphous material used in an eas marker and amorphous material composition |
| 03/04/1999 | WO1999010556A1 Method and device for joint oxydation and heat treatment of workpieces |
| 03/04/1999 | DE19737111A1 Gearwheel for heavy machine gears |
| 03/03/1999 | EP0899355A1 Method of case hardening a roller chain pin |
| 03/03/1999 | EP0899352A1 Medium/high carbon low alloy steel for warm/cold forming |
| 03/03/1999 | EP0899351A1 Medium/high carbon low alloy steel for warm/cold forming |
| 03/03/1999 | EP0899052A1 Method of manufacturing filled wire with recrystallization anneal |
| 03/03/1999 | EP0883779A4 Method and apparatus for containing and suppressing explosive detonations |
| 03/03/1999 | CN1209513A Roller-chain pin after being coated |
| 03/03/1999 | CN1209460A Gypsum deoxygenating agent |
| 02/25/1999 | WO1999009222A1 Method for producing a high-strength track element and track element thus obtained |
| 02/24/1999 | EP0897995A1 Light-alloy casting, heat treatment method |
| 02/24/1999 | CN1042241C Equipment and method for quenching railway switch sharp rail head from the section 5 mm apart from the pointed end |
| 02/24/1999 | CN1042240C High temp. high-alloy cogged ingot annealing method |
| 02/23/1999 | US5873954 Amorphous alloy with increased operating induction |
| 02/23/1999 | US5873949 Device for pressurized water discharge pipe |
| 02/23/1999 | CA2128019C High-strength steel parts and method of making |
| 02/18/1999 | WO1999007902A1 Metallurgical method for processing nickel- and iron-based superalloys |
| 02/18/1999 | WO1999007492A1 A method of producing a hardened sheet steel product |
| 02/18/1999 | DE19735285A1 High strength steel rail part especially switch-point component |
| 02/17/1999 | CN1042148C PC steel wire or steel bar with good straightness and forging characters |
| 02/16/1999 | US5871806 Carburizing the object under a carburizing atmosphere in a carburizing zone, cooling with gas, and nitriding with nitriding gas in nitriding zone |
| 02/16/1999 | US5871689 Inductive heating of billets of metal alloys having thixotropic properties, and for holding and transporting |
| 02/16/1999 | US5871686 Device for cooling a rolled product |
| 02/16/1999 | US5871596 By forming rods into series of rings |
| 02/16/1999 | CA2098143C Spray unit for cooling extruded sections |
| 02/12/1999 | CA2245046A1 Process for manufacturing a flux-cored wire with recrystallization annealing |
| 02/10/1999 | EP0896068A1 Bainite hardening |
| 02/10/1999 | EP0895964A1 Compact deoxo system |
| 02/10/1999 | EP0828862B1 Martensitic stainless steel having high mechanical strength and corrosion resistance and relative manufactured articles |
| 02/10/1999 | CN2307006Y Water spray device for steel pipe outside surface |
| 02/10/1999 | CN2307005Y Steel pipe hold-down gag |
| 02/10/1999 | CN2307004Y Water spray device in steel pipe |
| 02/10/1999 | CN1207365A Process for generation of low dew-point, oxygen-free protective atmosphere for performance of thermal treatments |
| 02/09/1999 | US5868994 Constant current needle annealing |
| 02/09/1999 | US5868878 Forming an ionized gas plasma around the workpiece |
| 02/09/1999 | US5868871 A preheating chamber, six carburizing chambers, a cooling chamber, a reheating chamber, a quenching chamber are placed around an intermediate chamber having a transport device; high-frequency induction heating technique |