| Patents for C21D 6 - Heat treatment of ferrous alloys (4,815) |
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| 10/27/1988 | DE3811270A1 Verfahren zur kontinuierlichen behandlung von kaltgewalztem mangan-kohlenstoffstahl Process for the continuous treatment of cold rolled manganese carbon steel |
| 10/26/1988 | EP0287710A2 Method of heat treating a martensitic chromium-molybdenum steel |
| 10/25/1988 | CA1243513A1 Method of making a multigrip fastener and fastener made thereby |
| 10/19/1988 | EP0286675A1 Process for manufacturing martensitic stainless steel excellent in stress corrosion cracking resistance |
| 10/18/1988 | US4778542 Controlling crystal size; heating; homogeneous alloy |
| 10/05/1988 | EP0285128A2 Manufacturing method for high hardness member |
| 10/05/1988 | EP0284832A1 Manufacturing process for an anisotropic magnetic material based on Fe, B and a rare-earth metal |
| 09/28/1988 | EP0284233A1 Furnace for formation of black oxide film on the surface of thin metal sheet and method for formation of black oxide film on the surface of shadow mask material by use of said furnace |
| 09/13/1988 | US4770721 Carbon, silicon, manganese, vanadium, niobium, molybdenum, iron |
| 09/07/1988 | WO1988006797A1 Rare earth element-iron base permanent magnet and process for its production |
| 09/06/1988 | US4769089 Method of annealing an aperture shadow mask for a color cathode ray tube |
| 08/23/1988 | CA1240904A1 Fiber-reinforced composite material and method of producing the same |
| 08/10/1988 | EP0277757A2 High strength high toughness steel |
| 08/10/1988 | CN88100515A High temp. character of improved selected chromium-molybdenum improved alloy and method for soldable ability |
| 08/09/1988 | US4762577 9 Chromium- 1 molybdenum steel alloy having superior high temperature properties and weldability, a method for preparing same and articles fabricated therefrom |
| 07/13/1988 | CN87105997A Process for production of double structure stainless cr-steel band having high strength, high ductility and low degree aeolotropy |
| 07/13/1988 | CN87105993A Process for production of double structure stainless cr-steel band having high strength, high ductility and low degree aeolotropy |
| 07/06/1988 | EP0273279A2 Process for the production of a strip of a chromium stainless steel of a duplex structure having high strength and elongation as well as reduced plane anisotropy |
| 07/06/1988 | EP0273278A2 Process for the production of a strip of a chromium stainless steel of a duplex structure having high strength and elongation as well as reduced plane anisotropy |
| 07/05/1988 | US4755233 Rolling rod at specified finishing-rolling temperature, holding at specified temperature, water cooling |
| 06/28/1988 | US4753691 Controlled cooling or isothermal holding for transformation to pearlite |
| 06/22/1988 | EP0271657A2 Fe-base soft magnetic alloy and method of producing same |
| 05/26/1988 | DE3639403A1 Process for improving the corrosion resistance of welded workpieces of stainless steel, and correspondingly produced workpiece |
| 05/17/1988 | US4744837 Bright annealing of stainless steels |
| 05/05/1988 | WO1988003176A1 Process for manufacturing martensitic stainless steel excellent in stress corrosion cracking resistance |
| 05/03/1988 | CA1235985A1 Materials system for high strength corrosion resistant bimetallic products |
| 04/26/1988 | US4739622 Apparatus and method for the deep cryogenic treatment of materials |
| 04/20/1988 | EP0264153A1 Magnetic material comprising iron, boron and a rare earth metal |
| 04/13/1988 | CN87204867U Measuring weight blank of no hygroscopicity and ferrous powder metallurgy |
| 04/12/1988 | US4737204 Alternate heating and cooling improve strength and ductility; reduce stress |
| 03/24/1988 | WO1988002032A1 Ferritic-austenitic stainless steel and a heat treatment process for precipitation hardening of the steel |
| 03/22/1988 | US4732623 Method of making high strength steel tube |
| 02/23/1988 | US4726855 Winding annealing coils around yokes of cores, flowing electric current to heat coils |
| 02/16/1988 | CA1232780A1 Work-hardenable austenitic manganese steel and method for the production thereof |
| 02/09/1988 | US4724012 Iron, nickel, chromium and cobalt alloy |
| 02/09/1988 | CA1232516A1 Using corrosion proof austenitic alloy for high load weldable components |
| 02/09/1988 | CA1232515A1 Using a corrosion proof austenitic iron chromium nickel nitrogen alloy for high load components |
| 02/03/1988 | EP0254932A2 Heat treatment of rapidly quenched Fe-6.5 wt si ribbon |
| 01/27/1988 | CN87104923A High energy ball grinding method for mfg. permanent magnet of rare earth-transition metal-boron |
| 01/20/1988 | EP0253521A2 High energy ball-milling method for making rare earth-transition metal-boron permanent magnets |
| 12/29/1987 | US4715906 Isothermal hold method of hot working of amorphous alloys |
| 12/22/1987 | US4714500 Heating-cooling cycles |
| 12/02/1987 | EP0247264A2 Method for producing a thin casting of Cr-series stainless steel |
| 12/01/1987 | US4710244 Dredger teeth |
| 12/01/1987 | US4709742 Method for producing a thin casting of Cr-series stainless steel |
| 11/11/1987 | EP0244968A2 Method for the thermal treatment of sintered metal permanent magnets |
| 10/27/1987 | US4702778 Hot rolling, then controlled cooling |
| 10/14/1987 | EP0240755A1 Heat treating method for obtaining a flat magnetization curve in amorphous cores |
| 10/13/1987 | US4699671 Controlled heat treatment for specific time period |
| 09/23/1987 | CN87100530A Permanent magnet made from the rare-earth with very low coercive force transition metal, boron alloy |
| 09/22/1987 | CA1227109A1 Method for producing a weldable austenitic stainless steel in heavy sections |
| 09/02/1987 | EP0234200A1 Process and device for the heat treatment of longitudinally welded pipes |
| 08/26/1987 | EP0233437A1 Corrosion-resistant tube or storage tank consisting of two metal layers |
| 08/25/1987 | US4689198 Austenitic stainless steel with high corrosion resistance and high strength when heat treated |
| 08/25/1987 | US4689095 Steel for manufacturing large forged parts |
| 08/18/1987 | US4687525 Toughness improved by nickel with vanadium and nitrogen |
| 08/12/1987 | EP0231620A2 Permanent magnet manufacture from very low coercivity crystalline rare earth-transition metal-boron alloy |
| 08/11/1987 | US4685978 Heat treatments of controlled expansion alloy |
| 07/28/1987 | US4683013 Method for producing a shadow mask for a color cathode ray tube |
| 07/16/1987 | DE3616098C1 Process for increasing the toughness of martensite-hardenable steels |
| 07/07/1987 | CA1223756A1 Amorphous alloys for electromagnetic devices |
| 05/26/1987 | US4668309 Rapid magnetic annealing of amorphous metal in molten tin |
| 05/19/1987 | CA1221895A1 Method of manufacturing high tensile strength steel plates |
| 05/13/1987 | EP0221468A2 Method of forming magnetostrictive rods from rare earth-iron alloys |
| 03/26/1987 | DE3533493A1 Process for producing components from steel of high strength and at the same time high toughness, having these properties even after hot deformation |
| 02/24/1987 | US4645720 Armour-plate and process for its manufacture |
| 01/28/1987 | EP0210035A2 High strength stainless steel |
| 01/07/1987 | EP0207697A1 Cast stainless steel alloy and method for its manufacture |
| 12/30/1986 | EP0205693A1 Special steels and their method of preparation |
| 12/16/1986 | CA1215253A1 Amorphous metal alloys having enhanced ac magnetic properties |
| 11/20/1986 | EP0202208A2 Heat treated high strength bimetallic cylinder |
| 10/07/1986 | US4616154 Forming flat plate, etching apertures, and magnetically annealing while reducing temperature |
| 09/16/1986 | US4612070 Method for welding chromium molybdenum steels |
| 09/09/1986 | US4610734 Process for manufacturing corrosion resistant chromium steel |
| 09/02/1986 | US4609402 Melts, hollow tube molds, inert gas |
| 07/29/1986 | CA1208686A1 Cathode ray tube having an fe-co-cr shadow mask and method of manufacturing such a shadow mask |
| 07/23/1986 | EP0187904A2 Method of heat treating pearlitic rail steels |
| 07/15/1986 | CA1207639A1 Low alloy steel plate and process for production therefor |
| 06/24/1986 | US4596282 Heat treated high strength bimetallic cylinder |
| 06/10/1986 | US4594114 Controlled annealing |
| 05/27/1986 | US4591395 Method of heat treating low carbon steel strip |
| 05/27/1986 | CA1204952A1 Treatment of amorphous magnetic alloys |
| 05/06/1986 | US4586969 Fe-Ni-Ti-Co alloy with shape memory effect and pseudo-elasticity and method of producing the same |
| 04/23/1986 | EP0178894A2 A method of heat treating high chromium cast ferrous-based alloys and a wearing element formed of a high chromium cast ferrous based alloy |
| 04/22/1986 | US4584031 Using a corrosion proof austenitic alloy for high load weldable components |
| 04/16/1986 | EP0177739A2 Use of a steel for parts in refrigeration technology |
| 04/16/1986 | EP0177669A2 Amorphous metal alloys having enhanced AC magnetic properties at elevated temperatures |
| 04/09/1986 | EP0177371A1 Process for manufacturing a permanent magnet |
| 02/25/1986 | US4572748 Uniform mechanical properities by direct quenching |
| 02/25/1986 | US4572738 Maraging superalloys and heat treatment processes |
| 02/12/1986 | EP0171132A2 Method for producing a weldable austenitic stainless steel in heavy sections |
| 01/08/1986 | EP0167221A1 Iron-nickel-titanium-cobalt alloy with shape memory effect and pseudo-elasticity, and method of producing the same |
| 01/08/1986 | EP0167118A2 Oxygen-containing ferromagnetic amorphous alloy and method of preparing the same |
| 12/18/1985 | EP0164678A1 Steel for the manufacture of large forgings and process for the treatment of this steel |
| 12/17/1985 | US4559090 Using a corrosion proof austenitic iron chromium nickel nitrogen alloy for high load components |
| 11/26/1985 | CA1197164A1 Heat treatments of low expansion alloys |
| 11/05/1985 | CA1196256A1 Austenitic-manganese steel |
| 10/09/1985 | EP0157548A2 Methods of producing fishing weights, and fishing weights |
| 10/09/1985 | EP0157479A2 A metal ceramics composite article and a process for manufacturing the same |
| 10/09/1985 | EP0157093A2 Teeth for excavators |