| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 03/22/2000 | CN1050635C Sealing device for outlet/inlet of controlled atmosphere heat treatment furnace |
| 03/21/2000 | US6040551 Apparatus for hardening the inside contour of a gun barrel with laser radiation |
| 03/21/2000 | US6040549 Laser beam machining apparatus and corresponding method which employs a laser beam to pretreat and machine a workpiece |
| 03/16/2000 | WO2000014289A1 Method and device for cleaning metallic surfaces |
| 03/16/2000 | DE19840094A1 Anwendung von Kupferlegierungen für Kühlpreßplatten in Einrichtungen für die Wärmebehandlung von Stahlteilen Use of copper alloys for Kühlpreßplatten in facilities for the heat treatment of steel parts |
| 03/15/2000 | CN2369190Y Annealing furnace for heat treatment |
| 03/15/2000 | CN2368855Y HF quenching inducer for piston ring groove |
| 03/15/2000 | CN1247232A Plasma quenching system and method for metal blades |
| 03/15/2000 | CN1050420C Hot-treatment heating equipment with both vaccum and air layers for heat insulation |
| 03/14/2000 | US6036793 Method of heat treating oxygen-sensitive products |
| 03/09/2000 | DE19840778A1 Verfahren und Vorrichtung zur Reinigung von Metalloberflächen Method and apparatus for cleaning metal surfaces |
| 03/08/2000 | EP0984071A1 Use of copper alloys for cooled press plates |
| 03/07/2000 | US6033499 Process for stretch forming age-hardened aluminum alloy sheets |
| 03/07/2000 | US6033497 Pitting resistant duplex stainless steel alloy with improved machinability and method of making thereof |
| 03/02/2000 | WO2000010744A1 Adjustable side guide with quick change strip heater assembly |
| 03/02/2000 | DE19940788A1 Differential for motor vehicle drive in which differential housing has laser hardened gear recesses in chamber with tracks arranged inside for reducing wear |
| 03/02/2000 | DE19938936A1 Ferrous metal parts are produced by quenching and heat treating an iron-carbon-silicon-manganese-nickel alloy of specified composition, to achieve high Young's modulus and high toughness |
| 03/02/2000 | DE19838726A1 Prevention/reduction of decarburization of the metal matrix of forming rolls involves applying an agent containing carbon onto the rolls, into the roll gap, or onto the material being rolled |
| 03/01/2000 | EP0981931A1 Induction oven for melting metals |
| 03/01/2000 | EP0930953A4 Bearing having micropores, and design method thereof |
| 03/01/2000 | CN1049924C Sealing device for inlet or outlet of atmosphere equipment |
| 02/29/2000 | US6030471 Surface hardening wear area of wheel having axis of rotation and critical temperature, heating wear area of wheel with induction heater while rotating; monitoring temperature until temperature is greater than critical temperature, quenching |
| 02/29/2000 | US6030469 Fully martensitic steel alloy |
| 02/29/2000 | US6029714 Stainless steel pipe of bright annealing finish type, having highly-smoothed inner surface and method for producing the same |
| 02/27/2000 | CA2279509A1 Differential with laser hardened case |
| 02/24/2000 | WO2000009773A2 Selective case hardening processes at low temperature |
| 02/24/2000 | WO2000009769A1 Method for producing a cam that can be placed on a hollow shaft to form a camshaft |
| 02/24/2000 | WO2000009768A1 Method for annealing an amorphous alloy and method for manufacturing a marker |
| 02/24/2000 | DE19853733C1 Local heat treatment of workpiece surfaces by laser beam involves locally resolved temperature measurement on the laser spot or its direct vicinity, and control of the laser output power |
| 02/24/2000 | DE19836247A1 Production of a cam to be mounted on a hollow shaft involves induction heating of the cam runner track and its immediate dowsing with a quenching agent |
| 02/23/2000 | EP0980913A1 Apparatus and methods for generating an artificial atmosphere for the heat treating of materials |
| 02/23/2000 | EP0980444A1 Steel compositions and methods of processing for producing cold-formed and carburized components with fine-grained microstructures |
| 02/23/2000 | EP0628641B1 Constrained quenching apparatus and heat treatment apparatus |
| 02/23/2000 | CN2365229Y Special frock for powder metallurgy ring heat treatment |
| 02/23/2000 | CN1245220A Method for producing iron-base workpiece with high Young's modulus and toughness |
| 02/22/2000 | CA2100656C Austenitic high manganese steel having superior formability, strengths and weldability, and manufacturing process therefor |
| 02/22/2000 | CA2032652C Industrial furnace with improved heat transfer |
| 02/19/2000 | CA2280412A1 Apparatus and methods for generating an artificial atmosphere for the heat treating of materials |
| 02/17/2000 | WO2000007790A1 Point cooling |
| 02/16/2000 | EP0979594A1 System, apparatus and method for heating metal products in an oscillating induction furnace |
| 02/16/2000 | CN2364054Y Polyalkylene glycols quenching liquid soil removal device |
| 02/15/2000 | US6024916 Cast cold tool and method for producing the same |
| 02/15/2000 | US6024913 Precision quenching apparatus and method with induction heating |
| 02/15/2000 | US6024893 Method for controlling a nitriding furnace |
| 02/15/2000 | US6024008 Variable displacement compressor, swash plate, and method for hardening swash plate |
| 02/10/2000 | WO2000006790A1 Steel for making a ball bearing part |
| 02/08/2000 | US6022468 Electrolytic hardening process |
| 02/03/2000 | WO2000005422A1 Method and installation for producing dual-phase steel |
| 02/02/2000 | EP0977465A1 Induction heating coil and induction heating device using the induction heating coil |
| 02/02/2000 | EP0976842A2 Box annealing furnace, method for annealing metal sheet using the same, and annealed metal sheet |
| 02/02/2000 | EP0975815A1 Method for hardening camshafts and linear inductor for the implementation of said method |
| 02/02/2000 | EP0975814A1 Heat treatment of steel |
| 02/02/2000 | CN1243166A Box-type annealing furnace and metal-board annealing method using same, and annealed metal board thereof |
| 02/02/2000 | CN1049011C Heat treatment of steel wire |
| 02/01/2000 | US6019938 High ductility very clean non-micro banded die casting steel |
| 02/01/2000 | US6019857 Improved breaking strength at the edge portion as well as spalling resistance of the tooth side. |
| 02/01/2000 | US6018854 Method of making surface-hardened metal shot |
| 01/27/2000 | DE19928746A1 Method for controlling the nitriding potential of nitriding furnace is based on determining partial pressure difference within an oxygen probe between furnace atmosphere and dissociated ammonia gas carrier taking the role of reference gas |
| 01/27/2000 | DE19839383A1 Verfahren zur thermomechanischen Behandlung von Stahl für torsionsbeanspruchte Federelemente Method for the thermomechanical treatment of steel for torsionally resilient elements |
| 01/27/2000 | DE19833321A1 Method and installation to produce dual phase steels out of hot-rolled strip, with cooling rate at first cooling stage set sufficiently low to obtain temperature which is sufficiently high for rapid transformation of austenite into ferrite |
| 01/27/2000 | DE19833202A1 Improving statistical optimization procedures e.g. for tour planning, logistics, store management, production lines involves use of bouncing process as well as local modifications |
| 01/26/2000 | EP0974676A2 Process for thermo-mechanically treating steel for torsion spring elements |
| 01/26/2000 | EP0973952A1 Apparatus and method for cooling hot rolled steel rod |
| 01/25/2000 | US6018296 Electronic detector |
| 01/25/2000 | US6017641 Coil spring comprising oil-tempered steel wire with internal hardness of more than hv 550 and which has been decarburized during heating prior to quenching; automobile internal combustion engine valve springs |
| 01/25/2000 | CA2194067C Warm forming high-strength steel structural members |
| 01/20/2000 | WO2000003041A1 Flat product, such as sheet metal, made of steel with high yield strength having good ductility and method for making same |
| 01/20/2000 | CA2337260A1 Flat product, such as sheet metal, made of steel with high yield strength having good ductility and method for making same |
| 01/19/2000 | EP0971825A1 Method for improving the properties of railway wheels and railway wheel |
| 01/13/2000 | WO2000001858A1 Method for forming a neck in a cylinder bore |
| 01/13/2000 | WO2000001857A1 Unit for the rapid cooling of sheet or flat by water-spraying |
| 01/13/2000 | DE19848034C1 Apparatus and method for hardening rotationally symmetric boundary layers not oriented parallel to the workpiece axis |
| 01/12/2000 | EP0971192A1 Improvements in or relating to heating furnaces for iron and steel products |
| 01/12/2000 | EP0970260A1 Process for quenching heat treatable metal alloys |
| 01/12/2000 | EP0970257A1 Ferromagnetic amorphous metallic alloy and annealing method |
| 01/11/2000 | US6013904 Induction hardening apparatus for a crankshaft |
| 01/11/2000 | US6013142 Composition and process for preventing blistering during heat treating of aluminum alloys |
| 01/11/2000 | US6013140 Laser hardening of screw forms |
| 01/11/2000 | CA2057886C Plant for conductive electrical heating of steel blanks |
| 01/06/2000 | WO2000000658A1 Case hardened steel with high tempering temperature, method for obtaining same and parts formed with said steel |
| 01/05/2000 | EP0751232B1 Steel material containing fine graphite particles uniformly dispersed therein and having excellent cold workability, machinability and hardenability, and method of manufacturing the same |
| 01/05/2000 | DE19928775A1 Induction hardened bearing, e.g. a ball or roller bearing, ball revolving spindle, water pump bearing, synchromesh joint ring or bearing for an automobile axle unit |
| 01/05/2000 | DE19854168A1 Producing a toothed steel transmission element by pressure rolling |
| 01/05/2000 | DE19849681C1 Heat treating components of steel or cast iron |
| 01/05/2000 | DE19849679C1 Heat treatment of steel workpieces through hardening |
| 01/05/2000 | DE19848033C1 Apparatus for hardening boundary layers of workpieces |
| 01/05/2000 | DE19829584A1 Verfahren zur Herstellung einer Verengung in einer Zylinderbohrung A process for producing a restriction in a cylinder bore |
| 01/05/2000 | DE19818272C1 Gasgemisch sowie Verfahren zur thermischen Behandlung metallischer Werkstücke unter Verwendung des Gasgemisches Gas mixture and process for the thermal treatment of metallic workpieces using the gas mixture |
| 12/30/1999 | DE19828784A1 Verfahren zum Richten von Profilstahl bei gleichzeitiger Minimierung der Eigenspannungen A method for straightening structural steel while minimizing the residual stresses |
| 12/29/1999 | WO1999067431A1 Composition for removing oxides in alloys of precious metals or similar |
| 12/29/1999 | EP0967292A1 Method and device for controlling the cooling power of a fluid |
| 12/29/1999 | EP0967027A2 Method for straightening steel sections while at the same time minimising the internal stress |
| 12/29/1999 | CN1047799C Process for heat-absorbing generating carbon monoxide and hydrogen |
| 12/29/1999 | CN1047787C Method for treating radiant tubes of fired heater in thermal cracking process |
| 12/28/1999 | US6008144 Window shutter for laser annealing |
| 12/28/1999 | US6007763 Process and installation for preparing a heat treatment atmosphere |
| 12/28/1999 | US6007761 Heat treating furnace for a continously supplied metal strip |
| 12/28/1999 | US6006429 Method of inductively hardening the cams of a camshaft |
| 12/23/1999 | WO1999066092A1 Bearing material for cold rolling forming and forming member thereof |
| 12/22/1999 | EP0965516A1 Towing vehicle with hardened fifth wheel plate. Hardening method for fifth wheel plate of towing vehicle |