Patents
Sitemap › C21 - Metallurgy of iron › C21D - Modifying the physical structure of ferrous metals; General devices for heat treatment of ferrous or non-ferrous metals or alloys; Making metal malleable by decarburisation, tempering, or other treatments › C21D 8 - Modifying the physical properties by deformation combined with, or followed by, heat treatment
Patents for C21D 8 - Modifying the physical properties by deformation combined with, or followed by, heat treatment (18,654)
10/1990
10/16/1990US4963197 Smoothing base metal surface by mechanical polishing with abrasive grains
10/16/1990CA1275154C Cold rolled steel sheets having an improved press formability
10/11/1990DE3910959A1 Verfahren zum herstellen von waelzlagerelementen aus durchhaertendem waelzlagerstahl Method for the manufacture of waelzlagerelementen from durchhaertendem waelzlagerstahl
10/10/1990EP0391335A1 Process for production of grain oriented electrical steel sheet having superior magnetic properties
10/09/1990US4961793 Comprising specific amounts of carbon, manganese, silicon, sulfur, phosphorus, nitrogen, aluminum, copper and iron
10/03/1990EP0390160A1 Process for producing a grain-oriented electrical steel sheet by means of rapid quench-solidification process
10/03/1990EP0390142A2 Process for producing grain-oriented electrical steel sheet having high magnetic flux density
10/03/1990EP0390140A1 Process for producing grain-oriented electrical steel sheet having excellent magnetic characteristic
10/03/1990CN1045813A Steel sheets for porcelain enameling and method of producing same
10/02/1990US4960652 Grain-oriented electrical steel sheet having a low watt loss
10/02/1990US4960473 Isothermal transformation from face centered to body centered cubic microstructure
10/02/1990US4960472 Alloying, insertion, multilayer
10/02/1990US4960470 Heat treatment as controlled rolling and low temperature solution
10/01/1990WO1990011849A1 Method of producing rollable metal sheet based on quench-solidified thin cast sheet
09/1990
09/26/1990EP0389096A1 Method of domain refinement of oriented silicon steel
09/26/1990EP0388776A1 Method of producing non-oriented magnetic steel plate having high magnetic flux density and uniform magnetic properties through the thickness direction
09/23/1990CA2011106A1 Method of domain refinement of oriented silicon steel by using flux-printing
09/19/1990EP0388283A1 Stainless ferritic steel and process for manufacturing this steel
09/19/1990EP0387901A2 Stainless steel sheet for exterior building constituent and method of making the same
09/19/1990EP0387786A2 Process for producing cold-rolled strip or sheet of austenitic stainless steel
09/19/1990EP0387785A2 Process for producing cold-rolled strips and sheets of austenitic stainless steel
09/19/1990EP0387361A1 Production method of stainless thin steel sheet having excellent surface luster and high corrosion resistance
09/18/1990US4957700 High strength non-magnetic stainless steel
09/18/1990US4957154 Process for the in-line homogenization and recrystallization of metallic products obtained by continuous casting
09/18/1990CA1274155A1 Hard steel sheet manufactured from al-killed continuous-cast carbon-manganese steel, and a method for the manufacture of such sheet
09/17/1990WO1990010723A1 Ferritic steel and method for producing such a steel
09/12/1990EP0386758A1 Steel sheets for porcelain enameling and method of producing the same
09/12/1990EP0386394A1 Process and device for manufacturing very thick amorphous steel strips
09/11/1990US4956242 Steel foil for drawing container with organic film coat
09/11/1990US4956025 Coiling, crystallization
09/11/1990CA1273786A1 Method and device for leveling metal strip to be fed into continuous annealing furnace
09/05/1990EP0385403A1 Television picture tube inner shielding material having a blackened layer of superior adhesion and method of manufacturing the same
08/1990
08/29/1990EP0384340A2 Apparatus for scribing grain-oriented electrical steel strip
08/28/1990US4952253 Grain-oriented silicon steel sheet having a low iron loss free from deterioration due to stress-relief annealing and a method of producing the same
08/28/1990US4952250 Method for manufacturing steel article having high toughness and high strength
08/28/1990US4952249 Intermediate coating of steel wire
08/23/1990CA2010587A1 Method of making non-oriented magnetic steel strips
08/21/1990US4950337 Magnetic and mechanical properties of amorphous alloys by pulse high current
08/21/1990US4950336 Hot rolling, dehydrogenation, annealing
08/21/1990CA2010586A1 Method of making non-oriented magnetic steel strips
08/16/1990EP0381910A1 Process for densifying castings
08/14/1990US4948675 Separating-agent coatings on silicon steel
08/14/1990US4948433 Process for preparation of thin grain oriented electrical steel sheet having excellent iron loss and high flux density
08/08/1990EP0215134B1 Process for producing unidirectional silicon steel plate with extraordinarily low iron loss
08/07/1990US4946519 Semi-processed non-oriented electromagnetic steel strip having low core loss and high magnetic permeability, and method of making
08/07/1990US4946516 Heating, hot rolling, quenching and tempering a slab composed of carbon, silicon, manganese, nickel, molybdenum, chromium, a luminum and iron at controlled temperatures
08/07/1990CA1272430A1 Method for producing a grain-oriented electrical steel sheet
07/1990
07/26/1990WO1990008202A1 Production of seizing-hardenable steel sheet
07/26/1990DE4001524A1 Mfr. of grain-oriented silicon steel - including blowing slab steel with oxygen-enriched gas prior to de-scaling and hot rolling
07/25/1990EP0378705A1 PROCESS FOR PRODUCING THIN Cr-Ni STAINLESS STEEL SHEET EXCELLENT IN BOTH SURFACE QUALITY AND QUALITY OF MATERIAL
07/19/1990CA2005027A1 Hot working method for producing grain oriented silicon steel with improved glass film formation
07/18/1990EP0378131A2 A method of manufacturing a grain-oriented electrical steel strip
07/18/1990EP0377734A1 PRODUCTION OF NON-ORIENTED HIGH-Si STEEL SHEET
07/17/1990US4941927 Fabrication of 18% Ni maraging steel laminates by roll bonding
07/17/1990CA1271692A1 Method of manufacturing a cold-rolled steel sheet having a good deep drawability
07/10/1990CA1271396A1 Method of manufacturing formable as-rolled thin steel sheets
07/04/1990EP0376733A1 Method of manufacturing steel sheet having excellent deep-drawability
07/04/1990CN1043528A Production technology for cold-rolled biphase steel
07/03/1990US4939042 Fatigue life of a component such as a bar
07/03/1990US4938811 Sag resistance
07/03/1990US4938808 Martensitic stainless steel sheet having improved oxidation resistance, workability, and corrosion resistance
07/03/1990US4938807 Process for production of grain oriented electrical steel sheet having high flux density
07/03/1990US4938806 Method for producing an electro-magnetic steel sheet
07/03/1990US4938266 Hot rolling, quenching, reheating, water-cooling, and tempering; high strength
06/1990
06/27/1990EP0375384A2 Method and apparatus for pre-processing stainless steel strip intended to be cold-rolled
06/27/1990EP0375273A2 Formable thin steel sheets and method of producing the same
06/27/1990EP0374948A2 Very thin electrical steel strip having low core loss and high magnetic flux density and a process for producing the same
06/27/1990CN1043276A Process for producing high-frequency bent tubes having low hardness as worked
06/26/1990US4936926 Hot working, controlled cooling
06/26/1990US4936925 Method for producing alloy of low thermal expansion
06/26/1990CA1270729A1 Method for improving base coating formation on silicon steel by controlling winding tension
06/26/1990CA1270728A1 Method of producing cube-on-edge oriented silicon steel from strand cast slabs
06/20/1990CN1043160A Metallic material having ultra-fine grain structure and method for its manufacture
06/19/1990CA1270426A1 Method for the production of high strength electric seam welded oil-well pipe
06/14/1990WO1990006378A1 Production method of crystal member having controlled crystal orientation
06/13/1990EP0372465A1 Method for manufacture of a metallic material having ultrafine grain structure
06/13/1990EP0372076A1 Method of producing directional silicon steel sheet having excellent magnetic characteristics and continuous intermediate annealing equipment
06/05/1990US4931613 Electrical discharge scribing for improving core loss of grain-oriented silicon steel
06/05/1990US4931107 Process for producing a cold rolled steel sheet having a good ageing resistance by continuous annealing
06/05/1990US4931106 Hot rolled steel sheet having high resistances against secondary-work embrittlement and brazing embrittlement and adapted for ultra-deep drawing and a method for producing the same
05/1990
05/30/1990EP0370588A1 Method for producing high-strength seamless steel pipes
05/30/1990EP0370575A1 Method for the manufacture of formable steel
05/30/1990EP0370061A1 Method and apparatus for forming bainite
05/29/1990US4929286 Method for producing a grain-oriented electrical steel sheet
05/29/1990CA1269594A1 Process for manufacturing pearlitic steel wire
05/22/1990CA1269256A1 Method of producing hot-rolled strip having a dual- phase structure
05/16/1990EP0367831A1 Process for producing nonoriented electric steel sheet
05/15/1990US4925500 High-strength hot-rolled steel sheet having remarkably excellent cold workability and process for manufacturing the same
05/15/1990CA1269029A1 Permanent magnet manufacture from very low coercivity crystalline rare earth-transition metal-boron alloy
05/15/1990CA1268957A1 Method for producing rolled steel products, particularly threaded steel tension members
05/09/1990EP0367467A1 Low iron loss grain oriented silicon steel sheets and method of producing the same
05/09/1990EP0367360A2 Process for manufacturing seamless pressure vessels
05/08/1990US4924052 Processing grain-oriented "electrical" steel
05/08/1990US4923528 Method for manufacturing rolled steel products
05/02/1990CN2056707U Heat treatment for single steel bar tension ground tackle
05/02/1990CN1041786A Drawing technology of ordinary band steel
05/01/1990US4921551 Permanent magnet manufacture from very low coercivity crystalline rare earth-transition metal-boron alloy
05/01/1990CA1268402A1 Method of producing thin steel sheets having an improved processability
04/1990
04/24/1990US4919733 Method for refining magnetic domains of electrical steels to reduce core loss
04/24/1990US4919728 Method of manufacturing nonmagnetic drilling string components
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