| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 03/25/2009 | CN101391342A Metal-bar automatic quench tempering butt-welding machine |
| 03/25/2009 | CN101391338A Ferritic steel barrel butt-junction circular-seam hot-wire TIG multi-layer multipath welding method |
| 03/25/2009 | CN100471997C Method for controlling the microstructure of a laser metal formed hard layer |
| 03/24/2009 | US7507307 excellent in stretch-flangeability and spot-weldability; weight reduction of automobile; continuous annealing; suppression of transformation of austenite into ferrite |
| 03/24/2009 | CA2391197C Heat treatment of titanium-alloy article having martensitic structure |
| 03/24/2009 | CA2243101C Process for the manufacture of a case hardened or carbonitrided steel mechanical part and steel for the manufacture of the said part |
| 03/19/2009 | WO2009035408A1 Device and method for heating a metal material |
| 03/19/2009 | WO2009035011A1 High-frequency hardening monitor device |
| 03/19/2009 | WO2009034970A1 Case-hardening steel being excellent in contact pressure fatigue strength, impact strength and bending fatigue strength |
| 03/19/2009 | WO2009034282A1 Martensitic stainless steel, method for making parts from said steel and parts thus made |
| 03/19/2009 | WO2009033527A1 Method and device for hardening profiles |
| 03/19/2009 | WO2009013410A3 Device for limiting the combustion fume exhaust at the entrance of a furnace for reheating iron and steel products |
| 03/19/2009 | US20090073815 Device and a method of manufacturing a housing material |
| 03/19/2009 | US20090072452 Structure for Casehardening a Fixture of a Guide Plate of a Chain Saw |
| 03/19/2009 | US20090071575 Hot rolled dual phase steel sheet, and method of making the same |
| 03/19/2009 | US20090071574 Cold rolled dual phase steel sheet having high formability and method of making the same |
| 03/19/2009 | CA2698889A1 Martensitic stainless steel, method for making parts from said steel and parts thus made |
| 03/18/2009 | EP2037337A1 A device and a method of manufacturing a housing material |
| 03/18/2009 | EP2036655A1 Method for manufacturing cast iron member, cast iron member, and engine for vehicle |
| 03/18/2009 | EP2035588A1 Device for securing a furnace provided with a rapid cooling and heating system operating under controlled atmosphere. |
| 03/18/2009 | EP1400603B1 Crawler bushing and method and device for producing the same |
| 03/18/2009 | CN201209156Y Continuous steel tube jet cooling hardening machine |
| 03/18/2009 | CN201209155Y Supporting structure |
| 03/18/2009 | CN201209153Y Vacuum quick hardening furnace for preparing ultrathin belt material |
| 03/18/2009 | CN101389775A Liquid slag quick quenching apparatus and method |
| 03/18/2009 | CN101387237A Plasma alloy strengthened surface oxidation cylinder liner |
| 03/18/2009 | CN101386991A Composite heat treating method for improving bearing service life |
| 03/18/2009 | CN101386954A Variable temperature martensite local strengthening austenite low manganese steel hammer head material and preparation process thereof |
| 03/18/2009 | CN101386953A A device and a method of manufacturing a housing material |
| 03/18/2009 | CN101386907A Homogeneous cooling apparatus for metal valve heat treatment |
| 03/18/2009 | CN101386905A Photo-thermal conversion coating for laser surface modification |
| 03/18/2009 | CN101386904A Marine cylinder liner isothermal quench bainite technology |
| 03/18/2009 | CN101386903A Application of laser heat treatment technology in marine diesel cylinder liner |
| 03/18/2009 | CN101386902A Laser-quenching apparatus for machine tool guide |
| 03/18/2009 | CN101386133A Cold rolling ribbed bar continuous production device |
| 03/18/2009 | CN101386132A Ball separation mechanism of steel ball processor |
| 03/18/2009 | CN101386126A Production method of stainless steel band for electric thin shrapnel |
| 03/18/2009 | CN101386024A Stainless steel band production method for mobile telephone |
| 03/18/2009 | CN100469938C Series superfine carbide high alloy tool steel |
| 03/18/2009 | CN100469903C Hardness gradient tempering process for 6CrNiSiMnMoV steel |
| 03/18/2009 | CN100469902C Deformation controlling method for sheet material in continuous heat treatment |
| 03/18/2009 | CN100469901C Saw blade basal body pressurization backfire arrangement |
| 03/18/2009 | CN100469486C Rolling preparation method for thick-walled and thin-bottomed basin parts |
| 03/17/2009 | US7503985 Quenching method |
| 03/17/2009 | CA2314830C Process for the production of thin trip-steel strips and thin strips obtained using such a process |
| 03/12/2009 | WO2009030823A1 Controlled method and device for oxidation/reduction of the surface of a steel strip running continuously through a radiant tube oven for galvanisation thereof |
| 03/12/2009 | US20090065108 Integrated Reformer and Batch Annealing Processes and Apparatus Therefor |
| 03/12/2009 | US20090065107 Polymeric quenchant, manufacture thereof, and method for quenching steel |
| 03/12/2009 | US20090065103 Method and apparatus for improved formability of galvanized steel having high tensile strength |
| 03/12/2009 | US20090064387 Method for making a protective garment and resulting protective garment |
| 03/11/2009 | EP2034038A2 Method for producing an anti-wear layer on a magnetic component |
| 03/11/2009 | CN201206157Y Slight aerating device for vacuum and high pressure gas quenching furnace |
| 03/11/2009 | CN201206156Y On-line laser machining apparatus for strengthening and toughening treatment of railway track surface |
| 03/11/2009 | CN101384742A High-strength steel excellent in weldability and process for production thereof |
| 03/11/2009 | CN101382388A Fast cooling method for intermediate frequency induction sintering furnace |
| 03/11/2009 | CN101381851A Drill rod of digger capable of high temperature crushing operation and producing method thereof |
| 03/11/2009 | CN101381850A Alloyed steel plug for steel tube perforating and production method |
| 03/11/2009 | CN101381847A Flushing and abrasion-resistant steel with high tensile strength and producing method thereof |
| 03/11/2009 | CN101381845A High-purity ferrite stainless steel material and manufacturing method thereof |
| 03/11/2009 | CN101381844A Cold working die steel material and production technology thereof |
| 03/11/2009 | CN101381843A 5Cr5MoWSiV cold roller and heat treatment method thereof |
| 03/11/2009 | CN101381842A High chromium content ferrite stainless steel and manufacturing method thereof |
| 03/11/2009 | CN101381841A High intensity and high ductility -50 DEG C low-temperature steel and manufacturing method thereof |
| 03/11/2009 | CN101381839A High strength and ductility alloy steel and heat treatment technology thereof |
| 03/11/2009 | CN101381807A Metal filament directly-heated annealing method and device |
| 03/11/2009 | CN101381805A Gap automatic regulating apparatus |
| 03/11/2009 | CN101381804A Heat treating method of thin sheet steel type part |
| 03/11/2009 | CN101381802A Quenching furnace |
| 03/11/2009 | CN101381801A Quenching furnace feeder |
| 03/11/2009 | CN101381800A Normalizing heat treatment technique of supercritical steel |
| 03/11/2009 | CN101381799A Pin surface-hardening treatment method of plastics forming machine |
| 03/11/2009 | CN101380712A Production method of steel edge |
| 03/11/2009 | CN101380711A Processing method of bead-fixing ring of vortex type automobile air conditioner compressor |
| 03/11/2009 | CN101380710A Processing method of limit ring of vortex type automobile air conditioner compressor |
| 03/11/2009 | CN101380687A Brazing procedure integration device |
| 03/11/2009 | CN100467657C Low-alloy cast steel |
| 03/11/2009 | CN100467653C Method for improving wearability of wearable high manganese steel using asymmetrical rolling |
| 03/11/2009 | CN100467629C Driving device for silicon steel rotary high-temperature annealing furnace bed |
| 03/11/2009 | CN100467628C Anneal process and annealing furnace for belt steel continuous zinc coating production |
| 03/11/2009 | CN100467624C Method for producing stainless steel having improved corrosion resistance |
| 03/11/2009 | CN100467623C Process and device for coating-free electrical steel annealing and bluing |
| 03/10/2009 | US7501606 Device for induction hardening |
| 03/10/2009 | US7500417 High-strength connecting rod and method of producing same |
| 03/05/2009 | WO2009028254A1 Heat treating furnace |
| 03/05/2009 | WO2009027593A1 Method for operating a continuous annealing or galvanisation line for a metal strip |
| 03/05/2009 | WO2009026881A1 Steel for producing machine components formed from solid stock |
| 03/05/2009 | US20090056840 Providing an ingot of a magnetic metal/precious metal alloy for manufacturing hard disk drives; cleaning; vacuum melting and pouring the alloy into a mold having a cooling system while maintaining the alloy surface in a molten state by arc heating; casting; hot working; annealing; metal working |
| 03/05/2009 | CA2697794A1 Steel for the production of solidly formed machine components |
| 03/04/2009 | EP2031274A1 Sheave member for belt continuously variable transmissions and method of manufacturing it |
| 03/04/2009 | EP2029784A1 Method of treating a crankshaft |
| 03/04/2009 | EP1423218B1 Method and apparatus for distorting a workpiece |
| 03/04/2009 | CN201201963Y Internal spraying water column reducing apparatus for steel pipe quenching |
| 03/04/2009 | CN201201958Y Laser-quenching apparatus for fixed rod type parts |
| 03/04/2009 | CN101379203A Method of induction hardening |
| 03/04/2009 | CN101378856A Method of cooling steel sheet |
| 03/04/2009 | CN101376952A High chrome alloy strengthened steel cast shot/sand and manufacturing process thereof |
| 03/04/2009 | CN101376950A Superhigh intensity cold rolling weather resisting steel plate and manufacturing method thereof |
| 03/04/2009 | CN101376946A Steel for 110ksi steel grade straight welding petroleum casing pipe, casing tube and manufacturing method |
| 03/04/2009 | CN101376944A High-strength high-tensile ratio cold-rolled steel sheet and manufacturing method thereof |
| 03/04/2009 | CN101376920A Intermediate frequency induction heating mechanical installation for bearing steel pipe blank |