| Patents for C21D 8 - Modifying the physical properties by deformation combined with, or followed by, heat treatment (18,654) |
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| 01/26/1989 | WO1989000611A1 Method of producing directional silicon steel sheet having excellent magnetic characteristics and continuous intermediate annealing equipment |
| 01/24/1989 | US4799971 Tubing for energy absorbing structures |
| 01/24/1989 | CA1249207A1 Controlled rolling process for dual phase steels and application to rod, wire, sheet and other shapes |
| 01/24/1989 | CA1249121A1 Method for manufacturing bent steel pipe excellent in strength and low-temperature toughness |
| 01/17/1989 | US4798772 Steel sheets for painting and a method of producing the same |
| 01/11/1989 | CN1030257A Apparatus for forming variable strength materials through rapid deformation and methods for use therein |
| 01/10/1989 | US4797167 Method for the production of oriented silicon steel sheet having excellent magnetic properties |
| 01/05/1989 | DE3743444A1 Process and installation for the manufacture of steel bars (steel rods) |
| 01/04/1989 | CN1030097A Thermomechanical annealing technology for martensite steel sections |
| 12/29/1988 | WO1988010319A1 High-strength, cold-rolled steel sheet having high gamma value and process for its production |
| 12/29/1988 | WO1988010318A1 High-strength, hot-rolled steel sheet having excellent cold workability and process for its production |
| 12/28/1988 | EP0297004A2 Use of a Process for improving the ductility of a product made from a martensitic transformation alloy |
| 12/27/1988 | US4793873 Coating with magnesium oxide, high temperature annealing, removal of boron using group six compounds |
| 12/27/1988 | US4793401 Method of producing thin steel sheets having an improved processability |
| 12/21/1988 | EP0295500A1 Hot rolled steel sheet with a high strength and a distinguished formability |
| 12/20/1988 | CA1246969A1 Method for producing high-strength steel having improved weldability |
| 12/20/1988 | CA1246968A1 Grain-oriented electrical steel sheet having stable magnetic properties resistant to stress-relief annealing, and method and apparatus for producing the same |
| 12/14/1988 | EP0294981A1 Method of producing grain-oriented silicon steel with small boron additions |
| 12/13/1988 | US4790889 Low manganese content steel rapidly cooled to coiling temperature |
| 12/13/1988 | US4790885 Direct quenching after rolling and tempering process |
| 12/07/1988 | EP0294134A2 Manufacture of ductile high-permeability grain-oriented silicon steel |
| 12/07/1988 | CN88103090A Method and apparatus for preliminary treatment of stainless steel for cold rolling |
| 12/01/1988 | EP0232281A4 Ultra high carbon steel alloy and processing thereof. |
| 11/23/1988 | EP0292313A2 Method for preliminary treatment of stainless steel for cold rolling |
| 11/23/1988 | EP0292150A2 Method of producing grain oriented silicon steel sheets having excellent magnetic properties |
| 11/23/1988 | EP0292039A1 Intermediate coating of steel wire |
| 11/22/1988 | US4786338 Method for cooling rolled steels |
| 11/22/1988 | CA1245080A1 Manufacturing steel concrete reinforcements on a high speed rolling mill |
| 11/15/1988 | CA1244747A1 Method for rolling and heat treating small diameter stainless steel rod |
| 11/09/1988 | EP0290175A1 Capacitive electrical discharge scribing for improving core loss of grain-oriented silicon steel |
| 11/09/1988 | EP0290174A1 Electrical discharge scribing for improving core loss of grain-oriented silicon steel |
| 11/08/1988 | US4782994 Method and apparatus for continuous in-line annealing of amorphous strip |
| 11/01/1988 | US4781769 Separating-agent composition and method using same |
| 10/27/1988 | DE3811270A1 Verfahren zur kontinuierlichen behandlung von kaltgewalztem mangan-kohlenstoffstahl Process for the continuous treatment of cold rolled manganese carbon steel |
| 10/27/1988 | DE3711905A1 Apparatus for treating sheets or panels of material or suchlike workpieces by laser irradiation, in particular for grain-orientated electric sheets conveyed in longitudinal direction |
| 10/26/1988 | EP0288054A2 Method of producing steel plate with good low-temperature toughness |
| 10/26/1988 | EP0287740A1 Method for preventing recrystallization during hot isostatic pressing |
| 10/26/1988 | CN88102197A Variable strength materials formed through rapid deformation |
| 10/25/1988 | US4780155 Capacitive electrical discharge scribing for improving core loss of grain-oriented silicon steel |
| 10/25/1988 | US4780154 Shape memory alloy and method for producing same |
| 10/25/1988 | CA1243509A1 Method and apparatus for cooling and handling hot rolled steel rod in direct sequence with a high speed rolling mill |
| 10/25/1988 | CA1243508A1 Pre-hip heat treatment of superalloy castings |
| 10/19/1988 | EP0287357A2 Method of reducing iron loss of grain oriented silicon steel sheet |
| 10/12/1988 | EP0024437B2 Process for producing non-aging cold-rolled steel sheets |
| 10/11/1988 | US4776900 Heating, hot rolling, quenching, and tempering |
| 10/11/1988 | CA1242960A1 Steel wire for a spring and method for the production thereof |
| 10/06/1988 | WO1988007588A1 Variable strength materials formed through rapid deformation |
| 10/06/1988 | WO1988007587A1 Apparatus and methods for forming variable strength materials through rapid deformation. |
| 10/05/1988 | EP0285593A1 Method for increasing the corrosion resistance of a quenched and self-tempered reinforcement bar made of steel |
| 10/04/1988 | US4775599 Cold rolled steel sheets having an improved press formability |
| 10/04/1988 | US4775430 Forming glass film on surface |
| 10/04/1988 | US4775429 Large diameter high strength rolled steel bar and a process for the production of the same |
| 10/04/1988 | US4775426 Casting oversized, cold forging, compressing; high strength, corrosion resistance |
| 09/27/1988 | US4773948 Hot rolling, coiling, annealing |
| 09/20/1988 | US4772771 Method for the production of high strength electric seam welded oil-well pipe |
| 09/20/1988 | US4772341 Low loss electrical steel strip |
| 09/20/1988 | US4772338 Process and apparatus for improvement of iron loss of electromagnetic steel sheet or amorphous material |
| 09/20/1988 | US4772337 Compress gas container of austenite steel alloy |
| 09/20/1988 | CA1242129A1 Method for manufacturing high-strength clad steel plate excellent in corrosion resistance |
| 09/13/1988 | US4770720 Annealing, coating with dielectric, grooves |
| 09/13/1988 | US4770719 Method of manufacturing a low yield ratio high-strength steel sheet having good ductility and resistance to secondary cold-work embrittlement |
| 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 |
| 09/06/1988 | US4769088 Process for producing hot-rolled steel sheet having high r value |
| 09/06/1988 | CA1241583A1 Production of a base steel sheet to be surface- treated which is to produce no stretcher strain |
| 08/31/1988 | EP0280467A1 Method for providing valve members having varied microstructure |
| 08/30/1988 | US4767469 Electrical discharge scribing for improving core loss of grain-oriented silicon steel |
| 08/30/1988 | CA1241258A1 Method of drape drawing a shadow mask for a colour display tube and device for such a method |
| 08/23/1988 | US4765174 Texture enhancement of metallic tubing material having a hexagonal close-packed crystal structure |
| 08/16/1988 | CA1240593A1 Process for producing, by continuous annealing, soft blackplate for surface treatment |
| 08/16/1988 | CA1240592A1 Processing for cube-on-edge oriented silicon steel |
| 08/09/1988 | US4762575 Crystallization, annealing |
| 08/02/1988 | CA1239852A1 Method of reducing the pore density in a casting |
| 07/26/1988 | US4759806 Patenting the wire by transformation in a transformation temperature and of drawing steel wire to smaller diameter |
| 07/26/1988 | US4759804 Forging and annealing to produce a fine grain microstructure |
| 07/26/1988 | CA1239568A1 Erw oil-well pipe and process for producing same |
| 07/19/1988 | US4758285 Shape-memory alloy resetting method |
| 07/19/1988 | US4757978 Shape-memory alloy resetting apparatus |
| 07/19/1988 | CA1239332A1 Steel that is exposed to hydrogen sulfide |
| 07/13/1988 | EP0273973A1 Martensitic stainless steel plate excellent in oxidation resistance, workability, and corrosion resistance, and process for its production |
| 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 | EP0273571A2 Separating-agents composition and method using same |
| 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 | US4755234 Method of manufacturing pressure vessel steel with high strength and toughness |
| 07/05/1988 | US4755233 Rolling rod at specified finishing-rolling temperature, holding at specified temperature, water cooling |
| 07/05/1988 | US4754635 Device for drape drawing a shadow mask for a color display tube |
| 07/05/1988 | CA1238841A1 Large, warm worked, alloy article |
| 06/28/1988 | US4753692 Hot rolling, annealing cold rolling steel sheet containing copper and tin |
| 06/28/1988 | US4753691 Controlled cooling or isothermal holding for transformation to pearlite |
| 06/14/1988 | US4750952 Cold-rolled steel sheets |
| 06/14/1988 | US4750949 Grain-oriented electrical steel sheet having stable magnetic properties resistant to stress-relief annealing, and method and apparatus for producing the same |
| 06/07/1988 | CA1237646A1 Layered steel cord |
| 06/07/1988 | CA1237642A1 Method of manufacturing austenitic stainless steel plates |
| 06/01/1988 | CN85101950B High temp. ballshaping and annealing technology of high carbon low alloyed steel |
| 05/24/1988 | US4745786 Hot rolling method and apparatus for hot rolling |
| 05/11/1988 | EP0266422A1 Process for producing low core loss, thin, unidirectional silicon steel plate having excellent surface properties |
| 05/10/1988 | US4743312 Method for preventing recrystallization during hot isostatic pressing |
| 05/10/1988 | US4742706 Strain imparting device |