| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
|---|
| 06/30/1981 | CA1104215A1 Method and apparatus for heat treating by means of electron beam |
| 06/30/1981 | CA1103931A1 Method of quenching with a fluidized dispersion of water in hydrophobic colloidal silica |
| 06/24/1981 | EP0030699A2 Process for producing a wire rod for cold forging |
| 06/16/1981 | US4273810 Method for preventing sintering in forging blocks |
| 06/16/1981 | US4273595 Method of preparing thermomagnetically treated magnetically anisotropic objects |
| 06/16/1981 | CA1103286A1 Spraying apparatus |
| 06/16/1981 | CA1103133A1 Process for increasing the versatility of isothermal transformation |
| 06/16/1981 | CA1103065A1 Well casing steel |
| 06/16/1981 | CA1103064A1 High yield strength ni-cr-mo alloys and methods of producing the same |
| 06/09/1981 | US4272306 Carburizing tub apparatus and method |
| 06/09/1981 | US4272239 Direct heating of heat treat furnace chamber |
| 06/09/1981 | CA1102850A1 Apparatus for providing a curtain of cooling liquid |
| 06/03/1981 | EP0029660A1 Slicing knife and method of making it |
| 05/28/1981 | WO1981001451A1 Interlocking truncated triangular insulator |
| 05/27/1981 | EP0029340A2 Interlocking truncated triangular insulator and insulated pipe |
| 05/19/1981 | US4268325 Annealing by heat treatment in magnetic field |
| 05/14/1981 | WO1981001319A1 Truncated triangular insulator |
| 05/13/1981 | EP0028523A1 Insulated skidrail |
| 05/06/1981 | EP0027828A1 Inductor for heating rotating metal workpieces, in particular crankshafts, for the purpose of surface hardening at varying operational depths |
| 05/05/1981 | CA1100393A1 Agricultural discs |
| 05/05/1981 | CA1100392A1 Skin melting |
| 04/29/1981 | EP0027649A1 Protective atmosphere process for annealing and or spheroidizing ferrous metals |
| 04/22/1981 | EP0027362A2 Magnetic material treatment method and apparatus |
| 04/21/1981 | CA1099620A1 Method and apparatus for heat treatment of rolled steel plate |
| 04/21/1981 | CA1099619A1 Laser annealing |
| 04/14/1981 | US4262233 Inductors, transformers, magnetometers; stress relieving by heat treatment |
| 04/14/1981 | CA1099202A1 Process and apparatus for the heat treatment of metallic strap coils |
| 04/02/1981 | WO1981000859A1 Carburizing tub apparatus and method |
| 04/01/1981 | EP0026032A1 Heat treatment process and apparatus |
| 03/31/1981 | US4258906 Device for gradient heating of wire |
| 03/24/1981 | US4257831 By tilting and rotating while simultaneously flame hardening and cooling with water |
| 03/17/1981 | US4256454 Lifting plate furnace |
| 03/17/1981 | US4256168 Cooling spray nozzle adjusting arrangement particularly for steel strand casting plants |
| 03/10/1981 | US4255239 Conditioning with urea or thiosemicarbazide before electrodeposition |
| 03/10/1981 | US4255205 Method of producing grain-oriented silicon steel sheets having substantially no glass film |
| 03/10/1981 | US4255136 Furnace for heat treatment of wire materials |
| 03/10/1981 | CA1097197A1 Method of and apparatus for controlled cooling of metallurgical products |
| 03/04/1981 | EP0024317A1 Installation for cooling bars and profiles |
| 03/03/1981 | US4253314 Plant for cooling heated goods |
| 03/03/1981 | CA1096612A1 Method of setting and controlling desired redox potentials in gases |
| 02/25/1981 | EP0024106A1 Method of heat treating ferrous workpieces |
| 02/17/1981 | US4251292 Quenching metals, filtration |
| 02/17/1981 | CA1095750A2 Cooling metal products |
| 02/17/1981 | CA1095748A1 High strength, high ductility low carbon steel |
| 02/11/1981 | EP0023546A1 Process and device for finishing the structure and/or surface of metals |
| 02/10/1981 | US4250374 Process and apparatus for the surface heat treatment of steel products by a laser beam |
| 02/10/1981 | US4250372 Process and apparatus for the heat treatment by high energy beams of surfaces of steel products |
| 02/10/1981 | US4249969 Method of enhancing the magnetic properties of an Fea Bb Sic d amorphous alloy |
| 02/10/1981 | US4249966 Method of forming a forsterite insulating film on the surface of a grain-oriented silicon steel sheet |
| 02/10/1981 | US4249965 For carburizing processes; containing nitrogen, hydrogen and carbon monoxide; catalytic cracking of vaporized methanol |
| 02/10/1981 | US4249964 Process for the chemical and thermal treatment of steel parts to improve the strength properties thereof |
| 02/10/1981 | CA1095387A1 Skin melting |
| 02/10/1981 | CA1095263A1 Method of separating ferritic steel or ductile iron from certain nonferrous metals |
| 02/03/1981 | US4248836 Recovery of nuclear fuel material |
| 02/03/1981 | CA1197981B Fluidized bed |
| 02/03/1981 | CA1094802A1 Fluidised bed |
| 01/28/1981 | EP0009050A4 High strength steel and process of making. |
| 01/27/1981 | US4246957 Autoclave furnace with cooling system |
| 01/27/1981 | CA1094395A1 Process and apparatus for annealing can bodies |
| 01/27/1981 | CA1094316A1 Heat treatment |
| 01/20/1981 | US4245943 Unloading apparatus for vacuum electric furnaces |
| 01/14/1981 | EP0022156A2 Cooling roller with an outer roller envelope and an inner body |
| 01/13/1981 | US4244686 Energy saving furnace and method of operating same |
| 01/13/1981 | CA1093438A1 Method of treating aluminum-killed and low alloy steel strip surfaces in a sulfur-bearing atmosphere |
| 01/13/1981 | CA1093436A1 Annealing of wire |
| 01/13/1981 | CA1093433A1 Surface alloying and heat treating processes |
| 01/07/1981 | EP0021865A1 Apparatus for cooling metal sheets or similar products |
| 01/07/1981 | EP0021760A1 Reheat furnace skid and method of installation |
| 01/07/1981 | EP0021208A1 System for monitoring the constitution of the atmosphere of a heat-treating furnace |
| 01/07/1981 | EP0020844A1 Improvement in the manufacture of oriented grain electrical steel sheet |
| 01/07/1981 | EP0020357A1 Lower bainite alloy steel article. |
| 01/06/1981 | US4243439 Process of quenching metal pieces and product produced |
| 01/06/1981 | CA1092961A1 Indirect heat transfer apparatus |
| 01/06/1981 | CA1092954A1 Heating workpieces by high current intensity glow discharge |
| 01/06/1981 | CA1092808A2 Apparatus for heat treatment of material |
| 12/30/1980 | US4242151 Chromizing of steels by gaseous method |
| 12/30/1980 | US4241903 Apparatus for heat treating elongated sheets |
| 12/30/1980 | CA1092496A1 Method for improving the surface quality of annealed steel strip |
| 12/23/1980 | US4240616 Apparatus for heat-treating metallic material |
| 12/23/1980 | CA1092200A1 Frequency electric furnace |
| 12/23/1980 | CA1091922A1 Rotary retort furnace |
| 12/16/1980 | US4239556 Sensitized stainless steel having integral normalized surface region |
| 12/16/1980 | US4239484 Vacuum oven with gas cooling device |
| 12/16/1980 | US4239480 Fluid bed furnace and pilot light assembly |
| 12/16/1980 | US4239191 Apparatus for controlling combustion in a metal melting furnace |
| 12/11/1980 | WO1980002698A1 Control of the composition of the atmosphere of a heat treatment oven |
| 12/10/1980 | EP0019876A1 Electrically operated device for the heating of metals and/or salts in the molten state, and of solutions |
| 12/10/1980 | EP0019682A1 Method for making metallic glass powder |
| 12/09/1980 | US4238122 Apparatus for annealing steel |
| 12/02/1980 | US4237359 Method and apparatus for the electroinduction heating of metal workpieces |
| 12/02/1980 | US4236986 Decarbonization, electrodeposition, coiling |
| 12/02/1980 | US4236941 From air and ethanol oxidized to hydrogen, carbon monoxide, carbon dioxide, methane and water which is soot-free and useable to carburize metals |
| 12/02/1980 | US4236399 Method of forming a parabolic trough |
| 12/02/1980 | CA1090620A1 Heat treatment for ball bearing steel |
| 12/02/1980 | CA1090564A1 Immersion cooling apparatus for hot metal pipes |
| 11/28/1980 | EP0020357A4 Lower bainite alloy steel article. |
| 11/25/1980 | US4235591 Continuous flow oven |
| 11/25/1980 | US4235424 Air cooled electrode system for electrically heated molten bath furnaces |
| 11/25/1980 | CA1090122A1 Method and apparatus for effecting uniform heat transfer in an industrial furnace |
| 11/18/1980 | US4234360 Method of making hysteresis motor rotor using amorphous magnetic alloy ribbons |