| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 01/12/1994 | EP0578524A1 Safety device for heating modules for the induction heating of metallurgical products |
| 01/12/1994 | CN2152807Y Semi-automatic programmable control laser machine tool for quenching of crankshaft |
| 01/12/1994 | CN1080662A Multi-nozzle fuel oil heat treatment method for 2000-5000 cubic meter ball tank |
| 01/12/1994 | CN1023451C Method and apparatus for mfg. hot-rolled steel band |
| 01/06/1994 | WO1994000605A1 Metal band cooling apparatus and cooling method therefor |
| 01/06/1994 | CA2116230A1 Equipment and method for cooling metal strips |
| 01/05/1994 | EP0577584A1 Method of protecting a hot rolled steel product |
| 01/05/1994 | EP0577158A2 Contour hardening apparatus |
| 01/05/1994 | EP0577043A2 Floatation-type pressure pad for metal strips |
| 01/05/1994 | CN2151985Y Horizontal soft pipe annealing furnace |
| 01/05/1994 | CN1080327A Low-alloyed ball mill wearing liner plate and making process thereof |
| 12/29/1993 | EP0575646A1 A method and a device for forming various workpieces |
| 12/28/1993 | US5273585 Heat-treating apparatus |
| 12/23/1993 | DE4221530A1 Device for reflecting an optical beam - has rotatable polygonal disc with mirror facets |
| 12/23/1993 | CA2086579A1 Method and a device for forming various workpieces |
| 12/22/1993 | CN2150213Y 节能退火炉 Saving annealing |
| 12/21/1993 | US5271777 High efficiency coil fabrication process |
| 12/21/1993 | CA1325372C Process and apparatus for improvement of iron loss of electromagnetic steel sheet or amorphous material |
| 12/15/1993 | EP0573641A1 Austenitic high manganese steel having superior formability, strength and weldability, and manufacturing process therefor |
| 12/15/1993 | CN1079513A High manganese a austenitic steel having excellent shapability, strength and weldabilily and its process for production |
| 12/14/1993 | US5269857 Minimization of quench cracking of superalloys |
| 12/14/1993 | US5269370 Thermal cycling device |
| 12/09/1993 | DE4218126C1 Quenching appts. for parts esp. for hardening - comprises parts conveyor in quench tank and pumped circulation of quench medium upwards within quench chamber |
| 12/08/1993 | CN1079257A Amorphous treatment process and device for ring |
| 12/07/1993 | US5268040 Method for steel surface hardening treatment and an apparatus therefor |
| 12/02/1993 | DE4209938C1 Melting surface of component with combined rotation and translation of component - using stationary radiation source, with rotation of component about given axis with combined linear motion, esp. for cam shaft mfr. |
| 12/01/1993 | EP0571521A1 Metal wire consisting of a steel substrate with a cold hardened annealed martensitic structure, and a coating. |
| 11/30/1993 | US5265851 Installation for the heat treatment of successive batches |
| 11/25/1993 | WO1993023577A1 Process for producing mirror-finished directional electric sheet |
| 11/23/1993 | US5264981 Dynamic storage systems including disk and tape media |
| 11/23/1993 | US5264056 Method and apparatus for annealing nuclear reactor pressure vessels |
| 11/23/1993 | CA1324562C Ultra-rapid heat treatment of grain oriented electrical steel |
| 11/18/1993 | DE4215837A1 Workpiece quenching or heating in liq. medium - using gas introduction to increase quenching or heating rate |
| 11/16/1993 | US5261976 Control system for a soft vacuum furnace |
| 11/16/1993 | US5261974 High-strength extra fine metal wire |
| 11/16/1993 | US5261972 Heat treatment, hot rolling, cold rolling, nitriding |
| 11/10/1993 | EP0568705A1 Method for degassing and solidifying aluminum alloy powder |
| 11/10/1993 | CN1078265A Steel ball heat treatment process |
| 11/10/1993 | CN1078179A Method and apparatus for minmization of oxide during hot working of metal, particularly steel |
| 11/10/1993 | CN1022698C Mn alloy steel and the process for treating same |
| 11/09/1993 | US5259893 In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas |
| 11/09/1993 | US5259200 Process for the cryogenic treatment of metal containing materials |
| 11/09/1993 | CA1324166C Wear resistant, abrasive laser-engraved ceramic or metallic carbide surfaces for rotary labyrinth seal members |
| 11/03/1993 | EP0567910A1 Process of thermal surface modification of metal parts by electron beams |
| 11/02/1993 | US5257511 Split water box nozzle with removable inserts |
| 11/02/1993 | CA1323733C Stop off |
| 10/28/1993 | WO1993021350A1 Method of producing a protective or reactive gas for the heat treatment of metals |
| 10/28/1993 | DE4238486A1 Longitudinal guide for vehicle seat position adjustment - is made of heat treated 0.35% carbon steel to give high strength and low weight |
| 10/27/1993 | EP0365543B1 System for peripheral differential heat treatment to form dual-property workpieces |
| 10/27/1993 | EP0328603B1 Control of straightness in scanning induction hardening of steel |
| 10/27/1993 | CN1022577C Method of preparing nitrogen-based controllable atmosphere used for metal thermal treatment |
| 10/26/1993 | US5256217 Multi-surface flame hardening machine and process |
| 10/26/1993 | US5256211 Applying current to magnetizable core; inducing flux, voltage; cooling |
| 10/21/1993 | DE4230764C1 Induction hardening appts. for crankshafts - has two axially offset inductors arranged in V=shape |
| 10/21/1993 | DE4212486A1 Steel components pretreatment - utilised prior to enamelling in annealing or baking furnaces under normal atmos. |
| 10/20/1993 | EP0566457A1 Clad sheets and method for producing clad sheets with an abrasion resistant layer of tool steel |
| 10/20/1993 | EP0313669B1 Ejector apparatus of fluidized bed heat-treating furnace |
| 10/20/1993 | CN1077496A Heat treatment of wear resisting iron or steel pieces |
| 10/19/1993 | US5254180 Annealing of carbon steels in a pre-heated mixed ambients of nitrogen, oxygen, moisture and reducing gas |
| 10/19/1993 | CA1323219C Fe-base soft magnetic alloy and method of producing same |
| 10/14/1993 | WO1993020248A1 Heat treatment process for metal articles |
| 10/14/1993 | DE4303763A1 Hardening the surface of high carbon steel spinning rings - by heat-surface treating e.g. by case, hardening and carbonitriding together with quenching in oil |
| 10/14/1993 | DE4212307A1 Verfahren zur Herstellung eines Schutz- oder Reaktionsgases für die Wärmebehandlung von Metallen A method for producing a protective or reaction gas for the heat treatment of metals |
| 10/13/1993 | EP0410969A4 Improvements in scanning induction hardening |
| 10/12/1993 | US5252803 Vehicle suspension member and method for making |
| 10/12/1993 | US5252153 Process for producing steel bar wire rod for cold working |
| 10/12/1993 | US5252152 Method of controlling warpage in workpiece by selective flame-hardening and vibrations |
| 10/06/1993 | EP0563826A1 Method of heat treating a zone of each of a plurality of articles |
| 10/06/1993 | EP0563736A1 Process and apparatus for the continuous surface treatment of wire rods with metallic surface |
| 10/06/1993 | EP0563735A1 Corrosion resistant composite wire and process for its manufacture |
| 10/05/1993 | US5250126 Method for manufacturing a rail for use in a linear motion rolling contact guide unit |
| 10/05/1993 | US5250122 Heat treating oil composition |
| 10/05/1993 | CA1322676C High nickel chromium alloy |
| 10/01/1993 | CA2093036A1 Corrosion-resistant composite wire and method for manufacturing same |
| 10/01/1993 | CA2093035A1 Method and device for continuous surface treatment of bar-shaped elongated materials having a metal surface |
| 09/30/1993 | WO1993018869A1 Method and device for reducing scale formation during hot forming of metal, in particular steel |
| 09/29/1993 | EP0562492A1 A laser device, particularly a laser robot, with a focusing head having sensor means for monitoring the quality of a process in an automated production system |
| 09/29/1993 | EP0562250A1 Process and device for quenching of metal pieces |
| 09/28/1993 | US5248354 Method for the preparation of a body of austempered ductile cast iron |
| 09/28/1993 | US5248130 Vehicle leaf spring with irradiated center for crack diversion |
| 09/22/1993 | EP0561536A1 Split water box nozzle with removable inserts |
| 09/22/1993 | CN1076492A Laser processing method and equipment for reducing iron loss of silicon steel sheet |
| 09/21/1993 | US5246510 Method for producing a selectively surface hardened cast iron part |
| 09/16/1993 | WO1993018376A1 Method and apparatus for relieving residual stresses |
| 09/16/1993 | WO1993018189A1 High strength steel sway bars and method of making |
| 09/16/1993 | DE4236921C1 Inductive heating installation for surface hardening - with the width and length of arc-shaped inductors chosen dependent on the geometry of continuous crank journals |
| 09/16/1993 | DE4208208A1 Verfahren und vorrichtung zur verminderung der zunderbildung beim warmumformen von metall, insbesondere von stahl Method and device for the rundown of scale formation during hot forming of metal, especially steel |
| 09/15/1993 | EP0560526A1 Method and apparatus for carrying out surface treatment |
| 09/15/1993 | EP0560172A1 Process for avoiding adherence of steelbelt during annealing |
| 09/15/1993 | EP0542813A4 Apparatus and method of induction-hardening machine components with precise power output control |
| 09/15/1993 | CN1076222A Solid metal-carbon matrix of metallofullerites and method of forming same |
| 09/15/1993 | CN1076221A Method and apparatus for forming a heat treating atmosphere |
| 09/15/1993 | CN1076220A Water-soluble polymer quenching agent |
| 09/15/1993 | CN1076219A Heat treatment process for steel-casting |
| 09/11/1993 | CA2091209A1 Method for forming a heat treating atmosphere |
| 09/09/1993 | DE4229092C1 Reducing the bore of cylinder liners - by transformation of austenite into martensite over a certain bore region |
| 09/09/1993 | DE4225002C1 Melt-hardening of curved surfaces without giving undesired geometry and surface changes of cam - using electron beam, with translatory motion superimposed on workpiece rotation |
| 09/07/1993 | US5242512 Method and apparatus for relieving residual stresses |
| 09/07/1993 | US5242509 Reaction of natural gas and oxygen to form carbon monoxide and hydrogen |
| 09/02/1993 | WO1993017146A1 Process for the thermochemical-heat treatment of case-hardened steels |