| Patents for C21D 9 - Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor (30,082) |
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| 12/25/1979 | US4180418 Method of making a steel wire adapted for cold drawing |
| 12/11/1979 | US4177754 Apparatus for obtaining bright finish galvanizing coating on wire |
| 12/11/1979 | CA1067801A1 Continuous annealing process and apparatus for strip coil |
| 12/11/1979 | CA1067694A1 Post weld heat treatment of shell and tube heat exchangers |
| 12/04/1979 | US4177088 Immersion in bath of molten metal |
| 11/29/1979 | WO1979001047A1 Process for putting into operation a furnace with movable supports |
| 11/27/1979 | US4175985 Method of producing steel sections of improved quality |
| 11/27/1979 | CA1067000A1 Method of coating carbon steel |
| 11/20/1979 | US4174981 Method of manufacturing springs, including the production of rod therefor |
| 11/20/1979 | CA1066595A1 Method of quenching and tempering large-diameter thin-wall steel pipe and apparatus therefor |
| 11/20/1979 | CA1066502A1 Plants for treating rolled steel products |
| 11/14/1979 | EP0005340A1 Heat shield arrangements for material e.g. in strip or bar form |
| 11/06/1979 | US4173501 Steel torsional element and method for making |
| 11/06/1979 | CA1065745A1 Method of quenching large-diameter thin-wall metal pipe |
| 11/06/1979 | CA1065561A1 Tool steel |
| 10/23/1979 | CA1064803A1 Method of cooling outer surface of large diameter metal pipe |
| 10/17/1979 | EP0004553A1 Apparatus for heat-treating coils of metal strip |
| 10/16/1979 | US4170815 Method of operating a reheating furnace in hot rolling line |
| 10/02/1979 | CA1063439A1 Textile element and method of making same |
| 09/25/1979 | US4168995 Steel wire patenting process |
| 09/25/1979 | US4168994 Thermal homogenization of steam generating tubing |
| 09/25/1979 | US4168993 Process and apparatus for sequentially forming and treating steel rod |
| 09/25/1979 | US4168823 Seals for the inlet and outlet of a continuous strip furnace |
| 09/18/1979 | US4168190 Method for locally solution-treating stainless material |
| 09/18/1979 | US4168013 High temperature insulating container |
| 09/11/1979 | US4167426 Method for annealing silicon steel |
| 09/06/1979 | WO1979000644A1 High strength steel and process of making |
| 09/04/1979 | US4166521 Stainless steel brake disc structure |
| 09/04/1979 | CA1061690A1 Method for producing steel filaments |
| 08/28/1979 | US4165996 Controlled cooling upon emerging from hot roller milling operation |
| 08/28/1979 | US4165964 Vertical direct fired strip heating furnaces |
| 08/28/1979 | US4165868 Method and apparatus for heating coils of strip |
| 08/28/1979 | US4165867 Installation for nitriding-sulphidizing of steel and iron elements |
| 08/28/1979 | CA1061226A1 Differentially carburized rock bit cutter |
| 08/21/1979 | US4165246 Process for the heat treatment of thick walled steel pipes |
| 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 | CA1060321A1 Method for providing strong wire and strip |
| 08/07/1979 | CA1059883A1 Process and equipment for continuous thermal treatment of metal wires and strips |
| 08/07/1979 | CA1059758A1 Continuous annealing line |
| 08/07/1979 | CA1059738A1 Method of producing a high pressure fuel injection pipe |
| 07/31/1979 | CA1059313A1 Fluid quench housing assembly with external flow adjustment |
| 07/17/1979 | CA1058492A1 Process for heat treatment of steel |
| 07/10/1979 | US4160681 Silicon steel and processing therefore |
| 07/10/1979 | US4160677 Heat treatment, optional molten salt bath treatment, bypassing salt bath by raising sink roll and its drive |
| 07/10/1979 | US4160641 Continuous furnace |
| 07/10/1979 | US4160543 Heat treatment of welds |
| 06/26/1979 | CA1057174A1 Grain-oriented silicon steel and processing therefor |
| 06/26/1979 | CA1057165A1 Device intended for controlled cooling of wire, especially steel wire |
| 06/19/1979 | US4158758 Method and apparatus for heat treatment of metal member |
| 06/12/1979 | CA1056181A1 Method and apparatus for symmetrically cooling heated workpieces |
| 06/12/1979 | CA1056106A1 Insulative coatings for electrical steel |
| 06/05/1979 | US4157111 Method of heat-treating ductile cast iron pipe |
| 06/05/1979 | CA1055972A1 Belleville spring |
| 06/05/1979 | CA1055821A1 Wheel quenching |
| 05/30/1979 | EP0002036A1 Burners for soaking pit furnaces |
| 05/22/1979 | US4155706 Batch annealing furnaces |
| 05/22/1979 | CA1054792A1 Induction heating of strip and other elongate metal workpieces |
| 05/16/1979 | EP0001770A1 Process and apparatus for cooling billets |
| 05/15/1979 | US4154628 Quench hardening of gears |
| 05/15/1979 | US4154574 Apparatus for treating workpieces in a bed of particles |
| 05/15/1979 | US4154565 Corrugator roll |
| 05/15/1979 | US4154432 Direct-current electrical heat-treatment of continuous metal sheets in a protective atmosphere |
| 05/15/1979 | US4154269 Method for forming wire stocks into coils |
| 05/15/1979 | CA1054495A1 Continuous annealing process for manufacturing high strength cold reduced steel sheet |
| 05/08/1979 | US4153236 Preheating furnace |
| 05/08/1979 | US4152919 Coil conveyor apparatus |
| 05/08/1979 | CA1054031A1 Method of coating low alloy steel |
| 05/08/1979 | CA1054029A1 Continuous annealing process for steel sheet manufacture |
| 04/24/1979 | US4151018 Friction welding tool joint to tube, controlled tempering, measurement of infrared radiation of weld |
| 04/24/1979 | US4150816 Apparatus for collecting and cooling hot wire rod |
| 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 |
| 04/17/1979 | US4149477 Textile element |
| 04/17/1979 | CA1052670A1 Process and apparatus for improving the quality of steel sections |
| 04/17/1979 | CA1052526A1 Arrangement for directly cooling a continuous casting |
| 04/10/1979 | US4148946 Method for maintaining a non-oxidizing atmosphere at positive pressure within the metallic strip preparation furnace of a metallic coating line during line stops |
| 04/10/1979 | US4148673 Prevention of warping |
| 04/10/1979 | US4148600 Heat treatment furnace for metal strip |
| 04/10/1979 | US4148448 Treatment line for metal wire |
| 04/03/1979 | US4147570 Applying laser beam to hardened wear spot, separating area from tempered section by a stress relieving buffer |
| 04/03/1979 | US4147569 Method of heating of at least two elongated tubular metallic objects |
| 04/03/1979 | US4147506 Method and apparatus for heating coils of strip |
| 04/03/1979 | US4147335 Apparatus for hardening the cam tracks of camshafts for internal combustion engines |
| 04/03/1979 | CA1051758A1 Process for manufactue of circular workpieces |
| 04/03/1979 | CA1051694A1 Air hardenable, formable steel |
| 03/27/1979 | US4146777 Heat conserver for bell-type ovens |
| 03/13/1979 | US4144442 Welding austenitic manganese steel to carbon steel |
| 03/13/1979 | CA1050245A1 Method of mounting track pin |
| 03/08/1979 | WO1979000100A1 A process for the production of sheet and strip from ferritic,stabilised,stainless chromium-molybdenum-nickel steels |
| 03/06/1979 | US4143184 Production of galvanized steel strip |
| 03/06/1979 | US4142919 Manufacture of elongated bodies of high strength carbon steel |
| 03/06/1979 | US4142713 Method of heat-treatment of welded pipe and apparatus therefor |
| 03/06/1979 | US4142712 Method and apparatus for effecting uniform heat transfer in an industrial furnace |
| 03/06/1979 | CA1049906A1 Steel sheets and strips |
| 03/06/1979 | CA1049904A1 Method for elimination or furnace roll pickup marks on silicon containing sheet steel |
| 03/06/1979 | CA1049814A1 Cold rolled steel sheet having excellent enamelability |
| 02/27/1979 | US4141125 Method of mounting track pin |
| 02/20/1979 | US4140552 Method of treating aluminum-killed and low alloy steel strip and sheet surfaces, in sulfur-bearing atmosphere, for metallic coating |
| 02/13/1979 | US4139139 Process for manufacturing butt-welded steel pipe |