| Patents for C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435) |
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| 04/17/1979 | US4149702 Method and apparatus for recycling heat treating salts |
| 04/17/1979 | US4149477 Textile element |
| 04/17/1979 | CA1052670A1 Process and apparatus for improving the quality of steel sections |
| 04/17/1979 | CA1052669A1 Process for hardening work pieces made from steel and arrangement for carrying out the process |
| 04/17/1979 | CA1052567A1 Method and apparatus for circulating a heat treating gas |
| 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 |
| 04/03/1979 | US4147570 Applying laser beam to hardened wear spot, separating area from tempered section by a stress relieving buffer |
| 04/03/1979 | US4147335 Apparatus for hardening the cam tracks of camshafts for internal combustion engines |
| 04/03/1979 | CA1051694A1 Air hardenable, formable steel |
| 03/27/1979 | US4146411 Steel rod or bar with different microstructures in surface layer, annulus, and core |
| 03/27/1979 | CA1051290A1 Method for the production of black plate with improved surface lubricity |
| 03/20/1979 | CA1050720A1 Continuous casting method and apparatus |
| 03/13/1979 | US4143863 Lift top quench hardening press |
| 03/06/1979 | US4142957 Continuous readjustment of glow discharge current based on measurements |
| 03/06/1979 | US4142923 Method of induction heat treating, quenching and tempering, of structural members |
| 03/06/1979 | US4142920 Process of manufacturing a steel strip by rolling, and strip obtained by said process |
| 03/06/1979 | US4142919 Manufacture of elongated bodies of high strength carbon steel |
| 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 | CA1049738A1 Method of an apparatus for varying the secondary cooling effect in the continuous casting of steel |
| 02/27/1979 | US4142063 High-frequency electric furnace |
| 02/27/1979 | US4141539 Heat treating furnace with load control for fan motor |
| 02/20/1979 | US4140552 Method of treating aluminum-killed and low alloy steel strip and sheet surfaces, in sulfur-bearing atmosphere, for metallic coating |
| 02/20/1979 | US4140484 Refractory sheathing |
| 02/13/1979 | US4139375 Process for sintering powder metal parts |
| 01/30/1979 | US4136527 Cooling continuously cast ingots |
| 01/30/1979 | CA1047545A1 Linings for pusher ovens |
| 01/30/1979 | CA1047372A1 Method for forming an insulating glass film on a grain-oriented silicon steel sheet having a high magnetic induction |
| 01/23/1979 | US4135702 Method and apparatus for preheating scrap |
| 01/23/1979 | CA1047122A1 Method of inductively heating and quench hardening camshafts |
| 01/16/1979 | US4135053 Heating assembly for a heat treating furnace |
| 01/16/1979 | CA1046230A1 Continuous casting plant for slabs |
| 01/09/1979 | US4133515 Heat treatment |
| 01/02/1979 | US4132393 Apparatus for cooling hot steel plate and sheet |
| 01/02/1979 | CA1045698A1 Method for discriminating high-temperature red heated material |
| 01/02/1979 | CA1045527A1 Method and apparatus for forming and treating bundles of steel rods |
| 12/26/1978 | US4131491 Torsion bar and method of forming the same |
| 12/26/1978 | CA1045008A1 Process and apparatus for cooling hot rolled steel rod |
| 12/19/1978 | US4130762 Arrangement for the automatic heating and adjustment of a treatment temperature for the treatment of workpieces by means of glow discharge |
| 12/19/1978 | US4130447 Magnesium oxide, rare earth metal compoun |
| 12/12/1978 | US4129464 High yield strength Ni-Cr-Mo alloys and methods of producing the same |
| 12/12/1978 | US4129459 Method for diminishing the strength and ductility of steel utilizing a lithium-indium-amalgam containing a small amount of vanadium pentoxide |
| 12/12/1978 | CA1044174A1 Tinned steel plate free from surface graphite |
| 12/12/1978 | CA1043954A1 Marking composition for hot metal articles |
| 12/05/1978 | US4128511 Water-soluble, crosslinked nitrogenous condensation products produced by reaction of chlorohydrin-ethers with ethyleneimine |
| 12/05/1978 | CA1043673A1 Organic coating characteristics of cold rolled steel |
| 11/28/1978 | US4127429 Forsterite insulating films formed on surface of a grain-oriented silicon steel sheet having a high magnetic induction and a method of forming the same |
| 11/21/1978 | US4126492 Brake disc and process for producing the same |
| 11/14/1978 | US4125364 High velocity billet heater |
| 11/14/1978 | CA1042322A1 Coatings for silicon steel |
| 11/07/1978 | US4124416 Voltage |
| 11/07/1978 | US4124415 Process for heating metal strips, in particular non-ferrous metal strips |
| 11/07/1978 | CA1041881A1 Coated steel product and process of producing the same |
| 11/07/1978 | CA1041760A1 Process for cooling a fused salt bath for heat treatment and arrangement for carrying out the process |
| 10/31/1978 | US4123642 Apparatus for induction hardening gear teeth |
| 10/31/1978 | US4123301 Method for quench hardening steel casings |
| 10/31/1978 | US4123294 Cururization to embrittle steel layers, crushing, screening |
| 10/24/1978 | US4122240 Skin melting |
| 10/24/1978 | US4121954 Cooling method for metal articles |
| 10/24/1978 | CA1040985A1 Method of and apparatus for patenting wire |
| 10/17/1978 | US4120642 Method for heating ingot in soaking pit |
| 10/17/1978 | US4120455 Apparatus for cooling metal sections |
| 10/17/1978 | CA1040516A1 Method and arrangmeent for agitating and controlling the temperature of baths, particularly melts for heat treating metallic articles |
| 10/10/1978 | US4119825 Induction heating apparatus |
| 10/03/1978 | US4118624 Frame for the support of articles which are to be treated |
| 10/03/1978 | US4118016 Continuous heat treating vacuum furnace |
| 09/26/1978 | US4117293 Method for conveying a row of forging ingots through an inductive heating apparatus |
| 09/26/1978 | US4116728 Treatment of amorphous magnetic alloys to produce a wide range of magnetic properties |
| 09/26/1978 | US4116716 Immersion cooling apparatus for hot metal pipes |
| 09/26/1978 | CA1039160A1 Methods of heat-treating steel |
| 09/19/1978 | US4115685 Resistive heating of elongated stock |
| 09/19/1978 | CA1038735A1 Method of quenching |
| 09/19/1978 | CA1038734A1 Heat-treatment of steels |
| 09/19/1978 | CA1038733A1 In-line heat treatment of hot-rolled rod |
| 09/19/1978 | CA1038594A1 Method of straightening a continuously cast strand |
| 09/12/1978 | US4113530 Method for forming a heat-resistant insulating film on a grain oriented silicon steel sheet |
| 09/12/1978 | US4113523 Aluminum |
| 09/12/1978 | US4113517 Method of making cold-reduced al-killed steel strip for press-forming by continuous casting and continuous annealing process |
| 09/12/1978 | US4113426 Method for circulating a heat treating gas |
| 09/12/1978 | US4112812 Heat-treated article |
| 09/12/1978 | US4112732 Method and apparatus for shaping integrally-shaped type brake disks for cars |
| 09/12/1978 | CA1038269A1 Cooling of hot rolled steel stock |
| 09/12/1978 | CA1038159A1 Liquid quenching system |
| 08/29/1978 | US4110092 Method of apparatus for cooling inner surface of metal pipe |
| 08/29/1978 | US4109897 Salt reclamation system |
| 08/22/1978 | US4109127 Apparatus and method for case hardening steel tools by application of heating pulses |
| 08/22/1978 | US4108693 Method for the heat-treatment of steel and for the control of said treatment |
| 08/22/1978 | CA1036915A1 Continuous carburizing method |
| 08/22/1978 | CA1036912A1 Heat treatment of ferrous metals in controlled gas atmospheres |
| 08/15/1978 | US4106757 Hover furnaces |
| 08/15/1978 | US4106755 Fluidized bed ladle heating method and apparatus |
| 08/15/1978 | US4106519 Vane-type nozzle assembly |
| 08/08/1978 | USRE29726 Method of coating carbon steel |
| 08/01/1978 | US4104498 Apparatus for and method of induction heating of metal plates with holes |
| 07/25/1978 | US4102838 Applying a paint containing titanium dioxide, solvent, and a burnable resin |
| 07/04/1978 | US4098624 Heat treatment of metals |
| 07/04/1978 | US4098495 Method of and apparatus for quenching sheet metal |
| 06/20/1978 | US4096000 Magnesium oxide and boron oxide |