| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 09/21/1994 | EP0615810A2 Vane member and method for producing joint |
| 09/20/1994 | US5348593 Method of heat treating gold or gold alloy parts |
| 09/20/1994 | US5348592 Method of producing nitrogen-hydrogen atmospheres for metals processing |
| 09/15/1994 | WO1994020765A1 Process for producing a component with at least one divided bearing surface for rolling elements |
| 09/15/1994 | WO1994020394A1 Roller rotatably mounted on bearings via a ball joint |
| 09/14/1994 | EP0614992A1 Metal band cooling apparatus and cooling method therefor |
| 09/14/1994 | EP0614991A1 A diluted solution of a hydride in liquid nitrogen |
| 09/13/1994 | US5345997 Cooling device |
| 09/13/1994 | US5345799 Method and device for forming various workpieces |
| 09/07/1994 | EP0613840A1 Ball and socket joint for interconnecting a ceramic roller to a bearing |
| 09/06/1994 | US5345065 Inductor with variable active length |
| 09/06/1994 | US5344509 Process for prevent the formation of adhesives when annealing steel band |
| 09/01/1994 | WO1994019499A1 Method for heat treatment and fixture therefore |
| 09/01/1994 | WO1994019124A1 Process and device for applying a temperature profile to metal blocks to be extruded |
| 08/31/1994 | EP0612852A1 Process for manufacturing high-strength bainitic steel rails with excellent rolling-contact fatique resistance |
| 08/31/1994 | EP0612572A1 Method of making a mandrel comprising a drill section |
| 08/31/1994 | EP0612276A1 Heat treatment of metal castings and in-furnace sand reclamation |
| 08/31/1994 | CN2175764Y Machine tool for laser quench of cylinder jacket |
| 08/30/1994 | US5342700 Automobile tire reinforcement |
| 08/30/1994 | US5342455 In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas |
| 08/23/1994 | US5340089 Coolant controlled IR heat treat apparatus |
| 08/20/1994 | CA2089904A1 Method of making a mandrel comprising a drill section for a self-drilling bling rivet |
| 08/18/1994 | WO1994018808A1 Apparatus for and method of induction-hardening machine components |
| 08/17/1994 | EP0610460A1 Rail thermal treatment process |
| 08/16/1994 | US5338373 Method of encoding and decoding a glassy alloy strip to be used as an identification marker |
| 08/16/1994 | US5338119 Longitudinal guide for longitudinal adjustment devices for vehicle seats |
| 08/16/1994 | US5337768 Extrusion billet taper quench unit |
| 08/11/1994 | DE4403275A1 Furnace for thermal treatment under vacuum |
| 08/10/1994 | EP0610135A1 Method for post weld heat treating a joint between two dissimilar alloyed steel workpieces |
| 08/10/1994 | CA2114872A1 Method and apparatus for cooling workpieces |
| 08/09/1994 | US5336338 Bearing components and process for producing same |
| 08/09/1994 | US5336085 Multi-layer fluid curtains for furnace openings |
| 08/09/1994 | CA1331295C Heat treatment method for strapping |
| 08/04/1994 | DE4319417C1 Insert-cast welding of fine-pearlitic rails |
| 08/03/1994 | EP0609073A1 Apparatus and method for steel hardening |
| 08/03/1994 | CN1090333A Hardening agent of water-soluble condensed saccharides |
| 08/03/1994 | CN1090332A Heat treatment process for elastic steel strips |
| 08/02/1994 | US5334269 Interrupted normalization heat treatment process |
| 08/02/1994 | US5333480 Method for straightening out of true work pieces, especially crankshafts |
| 08/02/1994 | CA2114206A1 Method of producing nitrogen-hydrogen atmospheres for metals processing |
| 08/02/1994 | CA2033939C Induction heating assembly including an interposed closed conductive loop for suppression of intercoil coupling |
| 08/02/1994 | CA1331096C Method for annealing iron powder |
| 07/28/1994 | DE4339204C1 Induction hardening process and equipment for universal joint crosspieces of carbon steel |
| 07/28/1994 | DE4311151C1 Grain-orientated electro-steel sheets with good properties |
| 07/27/1994 | EP0607907A1 Tempering apparatus for tempering a steel plate |
| 07/27/1994 | EP0607440A1 Process for producing mirror-finished directional electric sheet |
| 07/27/1994 | EP0553154B1 Process and device for affecting measurement and shape changes in the hardening of workpieces |
| 07/27/1994 | EP0511274B1 Device for treating the surfaces of workpieces with light beams |
| 07/26/1994 | US5333161 Intergranular stress corrosion cracking mitigation by rapid quench melting |
| 07/26/1994 | US5332139 Fluidized bed apparatus and method using same |
| 07/21/1994 | WO1994016278A1 Vacuum furnace for thermal treatment |
| 07/20/1994 | CN1089664A Metallized cutting tool material and carburizing tech. |
| 07/20/1994 | CN1089663A 电工钢片 Electrical steel |
| 07/19/1994 | US5330813 Patch for preventing carburization, nitriding or oxidation, and method of preventing carburization, nitriding or oxidation |
| 07/19/1994 | US5330594 Method of making cold formed high-strength steel parts |
| 07/19/1994 | US5330593 Process and apparatus for the inductive hardening of elongate workpieces |
| 07/19/1994 | US5329779 Method and apparatus for cooling workpieces |
| 07/13/1994 | EP0605444A1 Process and apparatus for surface hardening of refractory metal workpieces. |
| 07/12/1994 | US5328528 Process for manufacturing cold-rolled steel sheets with high-strength, and high-ductility and its named article |
| 07/12/1994 | US5327955 Process for combined casting and heat treatment |
| 07/12/1994 | US5327763 Apparatus for cooling extrusion press profile sections |
| 07/07/1994 | WO1994014985A1 Constrained hardening apparatus and heat treatment apparatus |
| 07/06/1994 | EP0605168A1 Quenching fluid and its use for quenching metallic articles |
| 07/06/1994 | EP0605163A1 Retort wall construction |
| 07/06/1994 | EP0604836A1 Method for making wear-resistant surface coatings on steel pieces and steel pieces with such coatings |
| 07/06/1994 | CN1088989A Laser treated IC engine cylinder body and cylinder sleeve |
| 07/05/1994 | US5326409 System for peripheral differential heat treatemnt to form dual-property workpiece |
| 07/05/1994 | US5325694 Extrusion billet taper quenching system |
| 06/29/1994 | EP0604072A1 Method and apparatus for the continuous field annealing of amorphous metal transformer cores |
| 06/29/1994 | EP0603799A2 Heat treating atmospheres |
| 06/29/1994 | EP0603744A2 Heat treating atmospheres from non-cryogenically generated nitrogen |
| 06/29/1994 | CN1088711A Method and apparatus for the continuous field annealing of amorphous mamorphous metal transformer cores |
| 06/29/1994 | CN1088621A Apparatus and method for cooling of metallic belt |
| 06/29/1994 | CN1088502A Method and apparatus for dry process fluxing |
| 06/28/1994 | US5324366 Holding first part in carburizing chamber to form desired case depth, moving through cooling chamber to equalizing chamber, removing when temperature has equalized, moving second piece from carburizing chamber to cooling chamber |
| 06/28/1994 | US5324009 Apparatus for surface hardening of refractory metal workpieces |
| 06/23/1994 | WO1994013843A1 Method of annealing steel strip in an annealing furnace without the formation of soot |
| 06/23/1994 | WO1994013842A1 Cold formed high-strength steel parts |
| 06/23/1994 | WO1994013841A1 Multipurpose atmosphere heat treatment apparatus |
| 06/23/1994 | DE4242540A1 Crankshaft remelt hardening |
| 06/23/1994 | CA2111498A1 Process for producing furnace atmospheres using noncryogenically generated nitrogen |
| 06/23/1994 | CA2111483A1 Heat treating atmospheres from non-cryogenically generated nitrogen |
| 06/23/1994 | CA2111481A1 Heat treating atmospheres |
| 06/21/1994 | US5322676 Mixing nitrogen with reducing gas to convert residual oxygen to water and carbon dioxide, flowing mixture through ammonia dissociator with heated catalyst bed, injecting effluent into furnace |
| 06/16/1994 | DE4324740C1 Prodn of salt mixture for hardening of steel parts - by pressing together potassium cyanate, potassium carbonate and sodium carbonate. |
| 06/15/1994 | EP0601549A1 Electrical steel sheet |
| 06/15/1994 | EP0601451A1 Process for hardness increasing and possibly for smoothing of work pieces and work pieces made by this process |
| 06/09/1994 | DE4320638A1 Rapid cooling of hot rolled material, esp. wire - uses air stream containing a water mist |
| 06/08/1994 | EP0600421A1 Low alloy sintered steel and method of preparing the same |
| 06/08/1994 | EP0599963A1 A method of encoding and decoding a glassy alloy strip to be used as an identification marker. |
| 06/07/1994 | US5318639 Incorporating titanium oxide into magnesium oxide annealing separating agent, purification annealing in two stages with different nitrogen concentrations |
| 06/07/1994 | US5318280 Retort wall construction |
| 06/01/1994 | EP0450031B1 Method for preparing very high quality magnetic materials |
| 06/01/1994 | CN2167098Y Process for continuous quenching with stepless adjusting power |
| 06/01/1994 | CN2167097Y Laser quenching machine |
| 06/01/1994 | CN1024812C Method and device for raising cold working wire specific elongation |
| 05/31/1994 | US5316594 Hardening a zirconium alloy by oxidation to form zirconium oxide layer |
| 05/31/1994 | US5316269 Leaf spring constraining apparatus |
| 05/26/1994 | DE4313569C1 Heat treatment of spheroidal graphite cast iron - to improve mechanical properties. |
| 05/25/1994 | EP0598384A1 Oxygen removal from partially purified nitrogen |