| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 03/04/1980 | US4191363 Quenching device for inductively heated workpieces |
| 03/04/1980 | CA1072864A1 Combined mechanical and thermal processing method for production of seamless steel pipe |
| 03/04/1980 | CA1072823A1 Jet impingement radiation furnace, method and apparatus |
| 02/26/1980 | US4190468 Process for coating an electrical steel sheet with an anti-sticking layer |
| 02/26/1980 | US4190235 Fluidized bed ladle heating method and apparatus |
| 02/26/1980 | CA1072424A1 Continuous heat treatment of steel strip |
| 02/19/1980 | US4189129 Apparatus for protecting parts in heating and cooling processing cycles thereof |
| 02/12/1980 | US4188519 Process and apparatus for controllably exchanging heat between two bodies |
| 02/12/1980 | US4188243 Conveying at a steady speed |
| 02/12/1980 | US4188242 Combination carburizing and boronizing methods |
| 02/12/1980 | US4187835 Indirect heat transfer apparatus |
| 02/06/1980 | EP0007464A1 Walking-beam type furnace with supporting plates |
| 01/29/1980 | US4185810 Device for cooling long items of material which have been heated |
| 01/29/1980 | US4185649 Arrangement of the input and output ends of a metal sheet cooling machine |
| 01/29/1980 | US4185648 Machine for treating sheets of variable width |
| 01/24/1980 | WO1980000086A1 Process and device for manufacturing hardened surfaces by second fusion of a part comprising variable radius of curvature,in particular of cames of a came shaft in internal combustion machines |
| 01/23/1980 | EP0007296A1 Skid pipe more particularly adapted to be used in a pusher type furnace and production of high pressure saturated vapour therewith |
| 01/23/1980 | EP0007014A1 Method for preventing sticking of forging ingots |
| 01/22/1980 | US4185183 Induction heating apparatus with adjustable flux concentrators |
| 01/22/1980 | CA1070225A1 Salt bath for chilling fused-salt nitrided structural components |
| 01/22/1980 | CA1070224A1 Method and apparatus for induction hardening gear teeth |
| 01/15/1980 | US4183773 Continuous annealing process for strip coils |
| 01/08/1980 | US4182609 Protective refractory member |
| 01/08/1980 | CA1069416A1 Method and equipment for heat treatment of large tubes |
| 01/08/1980 | CA1069415A1 Processing for aluminum nitride inhibited oriented silicon steel |
| 01/08/1980 | CA1069296A1 Apparatus for gas treatment of articles traversing an enclosure |
| 01/01/1980 | US4181091 Apparatus for pickling cast rod |
| 01/01/1980 | CA1068891A Pelletized rectifier for molten neutral salt baths and method |
| 12/25/1979 | US4180697 Vacuum oven with graphite heating |
| 12/25/1979 | US4180421 Torsion bar and method of forming the same |
| 12/18/1979 | US4179316 Electron beam |
| 12/12/1979 | EP0005729A1 Apparatus for heating open containers containing a molten material, such as baths contained in vats or crucibles for galvanising, enameling, lead-coating or holding metals or glass or like |
| 12/11/1979 | US4178244 Process for removal of hardening and galvanizing waste water |
| 12/11/1979 | CA1067801A1 Continuous annealing process and apparatus for strip coil |
| 12/04/1979 | US4177088 Immersion in bath of molten metal |
| 12/04/1979 | US4177086 Process for the thermal treatment and the quenching of forged articles |
| 12/04/1979 | CA1067256A1 Skin melted articles |
| 11/27/1979 | US4175986 Inert carrier gas heat treating control process |
| 11/27/1979 | US4175985 Method of producing steel sections of improved quality |
| 11/27/1979 | US4175730 Device for cooling a quenching bath of melted salt |
| 11/27/1979 | CA1067125A1 Power control system for single phase induction melting or heating furnace |
| 11/27/1979 | CA1067000A1 Method of coating carbon steel |
| 11/20/1979 | CA1066502A1 Plants for treating rolled steel products |
| 11/06/1979 | US4173501 Steel torsional element and method for making |
| 11/06/1979 | US4173500 Process for producing porous cast iron |
| 11/06/1979 | CA1065745A1 Method of quenching large-diameter thin-wall metal pipe |
| 10/23/1979 | CA1064803A1 Method of cooling outer surface of large diameter metal pipe |
| 10/16/1979 | US4171126 Vacuum furnace with cooling means |
| 10/09/1979 | US4170499 Stabilized, refined austenitic particles |
| 10/09/1979 | US4170495 Method and means for hardening and hot-zincing iron and steel products |
| 10/09/1979 | US4170451 Skid pipe covering |
| 10/02/1979 | USRE30106 Method of producing amorphous cutting blades |
| 10/02/1979 | US4169498 Method for the secondary cooling of a metal strand |
| 10/02/1979 | CA1063439A1 Textile element and method of making same |
| 09/18/1979 | US4168186 Method for control of the carburization of parts in a vacuum furnace |
| 09/18/1979 | US4168182 Method of producing shaped metallic parts |
| 09/18/1979 | US4168013 High temperature insulating container |
| 09/11/1979 | US4167662 Methods and apparatus for cutting and welding |
| 09/11/1979 | US4167426 Method for annealing silicon steel |
| 09/06/1979 | WO1979000659A1 Spinning rotor made from steel for open end spinning machines |
| 09/06/1979 | WO1979000644A1 High strength steel and process of making |
| 09/04/1979 | US4166610 Vacuum carburizing furnace |
| 09/04/1979 | US4166521 Stainless steel brake disc structure |
| 08/14/1979 | US4164435 Method for heat treatment of link chains |
| 08/14/1979 | CA1060322A1 Method and apparatus for water quenching steel strip with reduced amount of oxidation |
| 08/14/1979 | CA1060320A1 Method of producing silicon-iron sheet material with boron addition and product |
| 07/31/1979 | CA1059395A1 Ported engine cylinder liner with selectively hardened bore |
| 07/25/1979 | EP0003208A1 Silicon alloyed steel |
| 07/24/1979 | US4161800 Apparatus for improving the quality of steel sections |
| 07/17/1979 | CA1058710A1 Induction heating core structure and method of heating |
| 07/17/1979 | CA1058492A1 Process for heat treatment of steel |
| 07/17/1979 | CA1058401A1 Method and apparatus for reclaiming heat treating salt |
| 07/10/1979 | US4160891 Furnace for the inductive heating of metallic workpieces |
| 07/10/1979 | US4160681 Silicon steel and processing therefore |
| 07/10/1979 | US4160680 Vacuum carburizing |
| 07/03/1979 | US4159918 Alloying, hot rolling, annealing |
| 06/26/1979 | US4159218 Method for producing a dual-phase ferrite-martensite steel strip |
| 06/26/1979 | CA1057361A1 Corpuscular energy beam produced microasperities |
| 06/26/1979 | CA1057174A1 Grain-oriented silicon steel and processing therefor |
| 06/26/1979 | CA1057052A1 Free floating flight in a retort |
| 06/19/1979 | US4158758 Method and apparatus for heat treatment of metal member |
| 06/19/1979 | US4158579 Method for recycling heat treating salts |
| 06/12/1979 | US4157923 Treatment with laser before introducing alloying material |
| 06/12/1979 | CA1056181A1 Method and apparatus for symmetrically cooling heated workpieces |
| 06/05/1979 | CA1055821A1 Wheel quenching |
| 05/22/1979 | US4155780 Method for prestressing turbine disks |
| 05/16/1979 | EP0001889A1 Method for surface hardening metals |
| 05/15/1979 | US4154574 Apparatus for treating workpieces in a bed of particles |
| 05/15/1979 | US4154433 Continuous atmosphere controlled furnaces |
| 05/15/1979 | CA1054495A1 Continuous annealing process for manufacturing high strength cold reduced steel sheet |
| 05/08/1979 | US4153485 Deoxidizing |
| 05/08/1979 | US4153481 Graphite covering a molten bath of alkali metal chloride and carbonate |
| 05/08/1979 | CA1054031A1 Method of coating low alloy steel |
| 05/01/1979 | US4152180 Hardening steel |
| 04/24/1979 | US4151017 Vapor deposition of skin on metal-base part, heat treatment |
| 04/24/1979 | US4151014 Laser annealing |
| 04/24/1979 | CA1053338A1 Two-level temperature control for induction heating apparatus |
| 04/17/1979 | US4150279 Ring rolling methods and apparatus |
| 04/17/1979 | US4149913 Method of cooling outer surface of large diameter metal pipe |
| 04/17/1979 | US4149703 Apparatus for quenching a heated metal plate |