| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 04/04/1984 | EP0104971A2 Machine tool with laser heat treating |
| 04/04/1984 | EP0104789A1 Methods of prestressing tubular apparatus |
| 04/03/1984 | US4441013 Dental instrument heater |
| 04/03/1984 | CA1164777A1 Cast iron with spheroidal graphite with austenitic- bainitic mixed structure |
| 03/28/1984 | EP0103717A1 Inert salt bath for heating steel |
| 03/28/1984 | EP0103705A1 Method of heat treating work pieces |
| 03/20/1984 | US4438310 Method and apparatus for inductively heating valve seat inserts |
| 03/20/1984 | US4437908 Method of treating a magnetic material |
| 03/13/1984 | CA1163439A1 Refractory pads for walking beam furnaces |
| 03/07/1984 | EP0101931A1 Roller exchanging process in a continuous roller hearth furnace, and furnace for the application of it |
| 02/21/1984 | US4432812 Drive train gear of lower bainite alloy steel |
| 02/14/1984 | US4431466 Method for making armor plate |
| 02/14/1984 | US4431464 Salt bath quenching method and apparatus |
| 02/08/1984 | EP0100280A1 Quenching bath, and process for quenching metals |
| 02/07/1984 | US4430055 Semi-continuous vacuum heat-treating furnace, and its operation process |
| 02/01/1984 | EP0099619A2 Method for producing cube-on-edge oriented silicon steel |
| 01/31/1984 | US4429210 Heating device |
| 01/25/1984 | EP0099213A1 Nozzle header for cooling plates |
| 01/25/1984 | EP0098999A1 Process for adjusting leaf-spring like parts |
| 01/24/1984 | US4427460 Decarburizing low carbon steel |
| 01/24/1984 | US4427374 Recirculation device |
| 01/24/1984 | CA1160835A1 Refractory sheathing made from insulating shapes for vertical support members in heat-treating furnaces |
| 01/18/1984 | EP0098492A2 Method for the production of railway rails by accelerated cooling in line with the production rolling mill |
| 01/18/1984 | EP0098344A1 Heat-treatment system and process |
| 01/18/1984 | EP0098343A2 Laser annealing of metallic alloy substrates |
| 01/17/1984 | US4426235 Cold-rolled high strength steel plate with composite steel structure of high r-value and method for producing same |
| 01/17/1984 | CA1160556A1 Oxygen aspirator burner and process for firing a furnace |
| 01/11/1984 | EP0097919A1 Method of reconditioning welded joints |
| 01/04/1984 | EP0097408A2 Induction heating method and apparatus for elongated workpieces |
| 01/03/1984 | US4424023 Method and apparatus for temperature control in heating furnaces |
| 12/27/1983 | US4422872 Method of heating, melting, and coal coversion and apparatus for the same |
| 12/27/1983 | US4422623 Apparatus for cooling steel strips to effect continuous annealing |
| 12/21/1983 | EP0096104A1 Process for producing a gas atmosphere that contains nitrogen and hydrogen |
| 12/20/1983 | US4421575 Enhancing collapse strength |
| 12/13/1983 | US4420667 Induction heating method and apparatus for elongated workpieces |
| 12/08/1983 | WO1983004267A1 Divorced eutectoid transformation process and product of ultrahigh carbon steels |
| 12/07/1983 | EP0096010A2 Plant designed particularly for carrying out heat-treatment on crawler track-link |
| 12/07/1983 | EP0095953A1 Method of heating coated strips for the transformation of a coating structure, especially at the production of galvanized sheets |
| 12/06/1983 | US4419152 Process for direct heat treatment of track links for tractors or tracked vehicles |
| 12/06/1983 | US4419149 Rotation |
| 11/29/1983 | US4418259 Method and apparatus of uniform induction heating of an elongated workpiece |
| 11/29/1983 | US4418258 Method for heat treating metal |
| 11/29/1983 | US4417928 Steels |
| 11/29/1983 | US4417722 Vacuum furnace for heat treatment |
| 11/23/1983 | EP0094912A1 Improved laser shock processing |
| 11/23/1983 | EP0094808A1 Method of box-annealing steel sheet to minimize annealing stickers |
| 11/22/1983 | US4416043 Disc roll |
| 11/15/1983 | US4415415 Oxidation, electrolysis; acid treatment |
| 11/15/1983 | US4415381 Method for forcedly cooling a heated metal plate |
| 11/15/1983 | US4415379 Heat treatment processes |
| 11/15/1983 | US4415378 Carburized surface of untempered martensite and austenite |
| 11/15/1983 | US4415143 Continuous hardening device of steel plate |
| 11/09/1983 | EP0093349A2 Method of heating piping arrangement and heating coil |
| 11/08/1983 | US4414042 Method of making high strength steel tube |
| 11/08/1983 | US4414038 Laser beam surface treatment process for materials of large reflectivity |
| 11/02/1983 | EP0093060A1 Rotary hearth furnace for thermic, thermochemical or electrothermic treatment of metals in a diluted atmosphere |
| 11/02/1983 | EP0092815A2 A car stabilizer and a manufacturing method therefor |
| 10/27/1983 | WO1983003566A1 Metal quenching process |
| 10/25/1983 | US4411715 Stressing by heating web/edge to produce thermal gradient; high speed; simplification |
| 10/18/1983 | US4410374 Steel having excellent vibration attenuation performance and method of manufacturing the same |
| 10/18/1983 | US4410373 Process for heat treatment of a metal workpiece |
| 10/18/1983 | CA1155319A1 Metallic glass powders from glassy alloys |
| 10/13/1983 | WO1983003428A1 Improved supports of heating bodies intended to annealing furnaces |
| 10/11/1983 | US4408986 Method for thermal treatment of wire lashings and a continuous-heating furnace for performance of the method |
| 10/05/1983 | EP0090790A1 Apparatus for the heat treatment of articles by convection |
| 10/05/1983 | EP0090749A1 Process for cooling metallurgical workpieces with minimized deformation |
| 10/05/1983 | EP0090682A2 Heat treating method and apparatus for making rods of alloy steel ready for use |
| 10/05/1983 | EP0090488A2 Apparatus for simultaneously heating a plurality of elongated workpieces |
| 10/04/1983 | US4407683 Rapid heating and cooling |
| 10/04/1983 | US4407487 Device for cooling metal articles |
| 10/04/1983 | US4407486 Method and apparatus of hot working metal with induction reheating |
| 09/29/1983 | WO1983003261A1 Friction surface portion within a combustion chamber of a piston combustion engine and production method thereof |
| 09/28/1983 | EP0089423A1 Differential heating of upset ends of oil country tubing by induction heating |
| 09/27/1983 | US4406618 Method of operating continuous heat treatment furnace for metal strip coils |
| 09/21/1983 | EP0089019A2 Method and apparatus for sequentially quenching steel pipes |
| 09/20/1983 | US4404830 Method and apparatus for pressing parts from round stock |
| 09/14/1983 | EP0088746A1 Method of heat treating rails |
| 09/14/1983 | EP0088526A1 Fused salt bath composition |
| 09/13/1983 | US4404047 Process for the improved heat treatment of steels using direct electrical resistance heating |
| 09/13/1983 | US4404044 Salt of acrylic anhydride-alpha-olefin copolymer |
| 09/13/1983 | CA1153549A1 Conveyor furnace |
| 09/07/1983 | EP0087633A1 Process and device for heating or cooling quenching media |
| 09/07/1983 | EP0087587A1 An electromagnetic steel sheet treated by laser-beam irradiation |
| 08/31/1983 | EP0086988A1 Method and apparatus for quenching steel pipes |
| 08/30/1983 | US4401486 Method for annealing work hardened portions of structural beams |
| 08/30/1983 | US4401485 Method for inductively heating thin-walled elongated workpieces |
| 08/30/1983 | US4401478 Immersion in a molten metal bath while being rotated in a cylindrical furnace |
| 08/30/1983 | US4401477 Detachable momentum trap on back surface of metal substrate |
| 08/30/1983 | US4401297 Sintering furnace for powder metallurgy |
| 08/24/1983 | EP0086540A1 Control process for surface treatment by a laser beam |
| 08/24/1983 | EP0086408A2 Method and apparatus for heat treating steel |
| 08/24/1983 | EP0086357A1 Method for providing a crankcase for a reciprocating internal combustion engine and crankcase realized by said method |
| 08/23/1983 | US4399984 Automatic installation for the heat treatment of workpieces in fluidized beds |
| 08/23/1983 | US4399618 Method of sealing a fluidized bed and device for carrying out the method |
| 08/16/1983 | US4398971 Method of heating, holding or heat treatment of metal material |
| 08/16/1983 | US4398970 Titanium and vanadium dual-phase steel and method of manufacture |
| 08/16/1983 | US4398966 Corrosion of type 304 stainless steel by laser surface treatment |
| 08/16/1983 | US4398700 Annealing furnace with an improved cooling section |
| 08/16/1983 | US4398605 Nonionic surfactant concentrate |
| 08/09/1983 | US4398079 Machine for working metals using electron beams |