| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 02/05/1986 | EP0170348A1 Solution heat treated engine poppet valves |
| 02/04/1986 | US4568278 Charging and discharging device for heating furnaces, especially continuous bogie hearth furnaces and rotating hearth furnaces |
| 01/29/1986 | EP0169372A2 Apparatus for in situ annealing of a pressure vessel |
| 01/28/1986 | CA1199980A1 Induction heating method and apparatus for elongated workpieces |
| 01/22/1986 | EP0168788A2 Continuous type atmosphere heat treating furnace |
| 01/21/1986 | US4565325 Water cooling apparatus for metal sheets and belts |
| 01/15/1986 | EP0168038A2 High tensile-high toughness steel |
| 01/15/1986 | EP0167618A1 Coffin delivery system for metallurgical furnace. |
| 01/10/1986 | CN85103190A Salt bath heat treatment process for strengthening the metal surface |
| 01/10/1986 | CN85100644A Fast softening process for maraging steel |
| 01/08/1986 | CN85200536U One-layered water bath processing device for wire |
| 01/07/1986 | US4563222 High strength bolt and method of producing same |
| 01/07/1986 | CA1198915A1 Method of reconditioning welded joints |
| 01/07/1986 | CA1198892A1 Method and apparatus for heat treatment of metals |
| 12/31/1985 | US4561911 Aqueous solution for cooling cold-rolled steel strip in a continuous annealing process |
| 12/31/1985 | US4561908 Method of making forged steel articles, especially for vehicle parts |
| 12/31/1985 | US4561886 Method of heating, melting and coal conversion and apparatus for the same |
| 12/31/1985 | CA1198708A1 Method of box-annealing steel sheet to minimize annealing stickers |
| 12/31/1985 | CA1198692A1 Double-walled tube for transporting solid material, and method of manufacturing the same |
| 12/27/1985 | EP0165774A2 Method for producing high-strength steel having improved weldability |
| 12/24/1985 | US4560424 Process for forming a prestress anchorage by drawing a steel sleeve over a metal core |
| 12/24/1985 | US4560348 Gas nozzle for a heat treating furnace |
| 12/18/1985 | EP0164828A2 Method for improving the annealing separator coating on silicon steel and coating therefor |
| 12/18/1985 | EP0164775A1 Apparatus for the post-treatment, particularly the cooling of articles subjected to an isostatic pressing process |
| 12/17/1985 | US4559631 Heat treating furnace with graphite heating elements |
| 12/11/1985 | EP0163906A2 Method and vacuum furnace for heat treatment a charge |
| 12/10/1985 | CA1197757A1 Method for coating silicon steel |
| 12/03/1985 | US4556544 Carriages enabling active electrode to be swung clear of roller electrode in either direction |
| 12/03/1985 | US4555909 Method and apparatus for improved cooling of hot materials |
| 12/03/1985 | CA1197569A1 Apparatus for simultaneously heating a plurality of elongated workpieces |
| 12/03/1985 | CA1197444A1 Method of quenching |
| 11/26/1985 | CA1197094A1 Apparatus and method for spot annealing tubing |
| 11/21/1985 | WO1985005128A1 Method of making hollow cylindrical articles |
| 11/21/1985 | EP0162013A2 Warming-up furnace for cylindrical products |
| 11/21/1985 | EP0161593A2 Method for improving the magnetic properties of Fe-based amorphous-alloy thin strip |
| 11/21/1985 | EP0161408A2 Process for surface-hardening by remelting cast iron cylinders |
| 11/19/1985 | US4554441 Electric heating coil |
| 11/19/1985 | CA1196841A1 Method of cooling cold steel strip with cooling rolls |
| 11/13/1985 | EP0161236A2 Apparatus for manufacturing rails |
| 11/13/1985 | EP0160886A2 Method and apparatus for applying heat to articles and materials |
| 11/12/1985 | US4552686 Alkylene glycol, polyoxyalkylene amine |
| 11/10/1985 | CN85200168U Energy saving electric heat treatment furnace |
| 11/06/1985 | EP0160229A1 Slurry for coating silicon steel and process for coating silicon steel |
| 11/06/1985 | EP0160075A1 Method and apparatus for controlling the temperature of an article during treatment in vacuum |
| 11/05/1985 | US4551185 Methods of and apparatus for making retractile cords |
| 11/05/1985 | US4551183 Cooling under water and pressure |
| 11/05/1985 | US4551091 Method for reducing the volume of atmosphere needed to inhibit ingress of ambient oxygen into the furnace chamber of a continuous heat treatment furnace |
| 11/05/1985 | CA1196259A1 Method and apparatus for cooling steel pipe |
| 10/29/1985 | US4549911 Prevent decarbonization by using mixture of methylacetylene and pr |
| 10/29/1985 | US4549866 Method and apparatus for applying heat to articles and materials |
| 10/23/1985 | EP0159029A2 Method of and apparatus for heating magnetizable metal work pieces |
| 10/23/1985 | EP0158946A2 Method of and apparatus for heating non-magnetic metal work pieces |
| 10/23/1985 | EP0158844A1 Promoting directional grain growth in objects |
| 10/15/1985 | US4547229 Heat treatment of head to give large particle sized grains and shielding of stem to give finer grains |
| 10/15/1985 | US4547228 Surface treatment of metals |
| 10/09/1985 | EP0157131A2 High reliability double-chambered shielding system for welding |
| 10/08/1985 | CA1194693A1 Vacuum seal for continuous heat treating furnaces |
| 10/02/1985 | EP0156545A2 Heat treatment with an autoregulating heater |
| 10/02/1985 | EP0156378A2 Method and apparatus for carburizing steel with a gas |
| 10/02/1985 | EP0156147A1 Method and device for annealing metal work pieces |
| 10/02/1985 | EP0060257B1 Method for surface hardening cams |
| 10/01/1985 | US4544422 Three-stage heat treatment |
| 10/01/1985 | CA1194386A1 Method for producing cube-on-edge oriented silicon steel |
| 09/25/1985 | EP0155477A2 Method for producing semi-synthetic protective and reaction gases especially for heat treatment of steels and metals composed of a mixture of differently selectable amounts of nitrogen, hydrogen, carbonmonoxide, carbondioxide and steam |
| 09/24/1985 | US4543134 Process for producing grain-oriented electrical steel sheet having both improved magnetic properties and properties of glass film |
| 09/24/1985 | US4543060 Continuous; non-oxidizing atmosphere |
| 09/24/1985 | CA1193948A1 Case hardening method for steel parts |
| 09/18/1985 | EP0155029A1 A method for improving the static and dynamic strength of a steel rivet for riveted joints and a rivet, obtained by application of said method |
| 09/17/1985 | US4541878 Heat treatment, cooling, ductility |
| 09/12/1985 | WO1985004069A1 Heat treatment with an autoregulating heater |
| 09/10/1985 | US4540364 Pusher-type furnace |
| 09/10/1985 | CA1193176A1 Method for the production of improved railway rails by accelerated colling in line with the production rolling mill |
| 09/04/1985 | EP0153688A1 Method of cooling hot steel plates |
| 09/03/1985 | US4539461 Method and apparatus for laser gear hardening |
| 09/03/1985 | US4538986 Means for supporting the material under treatment in continuous-action heat treatment furnaces |
| 09/03/1985 | US4538442 Method of prestressing a tubular apparatus |
| 08/29/1985 | WO1985003726A1 Apparatus for dip-hardening metal pipe |
| 08/28/1985 | EP0153062A2 Method for mitigating solidification segregation of steel |
| 08/27/1985 | US4537792 Prevents sticking together of sheets during annerling;organic silicon compound |
| 08/27/1985 | CA1192478A1 Method and apparatus for quench hardening thin-walled elongated workpieces |
| 08/21/1985 | EP0152160A2 High strength low carbon steels, steel articles thereof and method for manufacturing the steels |
| 08/21/1985 | EP0151838A1 Heat treating hardenable carbon steel pipe |
| 08/21/1985 | EP0151759A2 Magnetic material treatment method and apparatus |
| 08/21/1985 | EP0151700A2 Industrial furnace, especially a multiple chamber vacuum furnace, for heat treating batches of metal workpieces |
| 08/20/1985 | US4536639 Regulating surface treatment by laser beam |
| 08/20/1985 | CA1192101A1 Hot-dip coating of ferrous strands |
| 08/14/1985 | EP0151194A1 Method of improving the evenness of rolled steel |
| 08/14/1985 | EP0151165A1 Improvement in method and apparatus for heat treating. |
| 08/13/1985 | US4534801 Process for removing adhered substance from steel ingots |
| 08/13/1985 | US4534780 Tunnel furnace, modular sections |
| 08/07/1985 | EP0150909A2 Method of manufacturing grain-oriented silicon steel sheets |
| 08/06/1985 | US4533815 Process for treating a bearing surface to modify microasperities |
| 08/06/1985 | US4533581 Mica, binder, inorganic fioller, fibers |
| 08/06/1985 | US4533405 Tubular high strength low alloy steel for oil and gas wells |
| 08/06/1985 | US4533400 Method and apparatus for laser hardening of steel |
| 08/06/1985 | US4532984 Rapid cool autoclave furnace |
| 07/31/1985 | EP0149927A1 Process for manufacturing the iron parts of a colour television tube |
| 07/30/1985 | US4531987 Method for inductively heat treating workpiece bore walls |
| 07/30/1985 | US4531983 Method of deep hardening of workpieces |
| 07/30/1985 | US4531981 Component possessing high resistance to corrosion and oxidation, composed of a dispersion-hardened superalloy, and process for its manufacture |