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| Number | Title | Issue Date |
| 8137484 | Method of production of steel superior in machinability The present invention provides steel superior in machinability comprised of, by wt %, C: 0.005 to 0.2%, Si: 0.001 to 0.5%, Mn: 0.2 to 3.0%, P: 0.001 to 0.2%, S: 0.03 to 1.0%, T.N: 0.002 to 0.02%, T.O: 0.0005 to 0.035%, and the balance of Fe and unavoidable impuritie... | 03/20/2012 |
| 8052811 | Method of producing non-oriented electrical steel sheet excellent in magnetic properties A rapidly-solidified non-oriented electrical steel sheet having high magnetic flux density and low core loss is provided. The method of producing the non-oriented electrical steel sheet excellent in magnetic properties comprises casting a steel strip by using... | 11/08/2011 |
| 7416619 | Application of an alloy in kitchen utensil products The present invention relates to new kitchen utensils, in particular relates to an application of a material in kitchen utensils. The present invention solves the problems of long-term presence in the field. SUS436L is used for kitchen utensils. SUS436L chemical com... | 08/26/2008 |
| 7396421 | Duplex stainless steel and manufacturing method thereof A duplex stainless steel containing C, Si, Mn, P, S, Al, Ni, Cr, Mo, N (nitrogen, O (oxygen), Ca, Mg, Cu, B, and W, and the balance Fe and impurities, where a number of oxide-based inclusions, which have a total content of Ca and Mg of 20 to 40% by mass and also hav... | 07/08/2008 |
| 7288158 | Manufacturing process for producing high strength steel product with improved formability A flat rolled, high strength, formable steel product has a yield strength of at least about 100 ksi. The product has sufficient formability such that it can withstand a longitudinal or transverse 180° bend of less than 1.0 times its thickness and is preferably comp... | 10/30/2007 |
| 7220325 | High-strength micro-alloy steel A process for enhancing precipitation strengthening in steel and for making a high-strength micro-alloy steel, and a steel made from the process. The process includes the step of deforming the steel containing a suitable precipitate strengthening substance, at a tem... | 05/22/2007 |
| 7083686 | Steel product for oil country tubular good A steel product for oil country tubular good according to the invention comprises, in mass %, 0.10% to 0.35% C, 0.10% to 0.50% Si, 0.10% to 0.80% Mn, up to 0.030% P, up to 0.010% S, 0.30% to 1.20% Cr, 0.20% to 1.00% Mo, 0.005% to 0.40% V, 0.005% to 0. 100% Al, up to... | 08/01/2006 |
| 7005016 | Hot rolled steel having improved formability A method of producing hot rolled steel having improved formability and minimal silver formation comprises the addition of Titanium and Boron to the molten steel to combine with and remove the free nitrogen prior to rolling. Titanium is added so that the amount of ni... | 02/28/2006 |
| 7005017 | Steel for mechanical construction, method of hot-shaping of a part from this steel, and part thus obtained The invention relates to a steel for mechanical construction, wherein its composition in percentages by weight is: 0.35%≦C≦1.2%; 0.10%≦Mn≦2.0%; 0.10%≦Si≦3.0%; traces≦Cr≦4.5%; traces≦Mo≦2.0%; traces≦Ni≦4.5%; traces≦V≦0.5%; traces≦Cu≦3.... | 02/28/2006 |
| 6994758 | Steel for mechanical construction, method of hot-shaping of a part from this steel, and part thus obtained The invention relates to a steel for mechanical construction, wherein its composition in percentages by weight is: 0.35%≦C≦2.5%; 0.10%≦Mn≦2.5%; 0.60%≦Si≦3.0%; traces≦Cr≦4.5%; traces≦Mo≦2.0%; traces≦Ni≦4.5%; traces≦V≦0.5%; traces≦Cu≦4%... | 02/07/2006 |
| 6982012 | Method of manufacturing steel sheet having excellent workability and shape accuracy A method of manufacturing a high strength steel sheet containing, in mass %, C: 0.02 to 0.04%, Si: at most 0.4%, Mn: 0.5-3.0%, P: at most 0.15%, S: at most 0.03%, Al: at most 0.50%, N: at most 0.01%, and Mo: 0.01-1.0%. The method includes performing hot rough rollin... | 01/03/2006 |
| 6890480 | Ductile medium- and high-density, non-toxic shot and other articles and method for producing the same Medium- and high-density articles are formed from melting and casting alloys containing tungsten, iron, nickel and optionally manganese and/or steel. In some embodiments, the articles have densities in the range of 8-10.5 g/cm3, and in other embodiments, ... | 05/10/2005 |
| 6803712 | Material for shadow mask, method for production thereof, shadow mask and image A material for shadow mask having the following composition of components: C≦0.0008 wt %, Si≦0.03 wt %, Mn:0.1 to 0.5 wt %, P≦0.02 wt %, S≦0.02 wt %, Al:0.01 to 0.07 wt %, N≦0.0030 wt %, B: an amount satisfying the formula: 5 ppm≦B-11/14×N≦30 ppm, bal... | 10/12/2004 |
| 6773522 | Process and device for producing a high-strength steel strip A process and device for producing a high-strength steel strip. In the process, liquid steel is cast in at least one continuous-casting machine (1) with one or more strands to form a slab and, utilizing the casting heat, is conveyed through a furnace device (... | 08/10/2004 |
| 6767415 | Process for producing a thin sheet of ultra-low-carbon steel for the manufacture of drawn products for packaging and thin sheet obtained A killed and vacuum-degassed very-low-carbon steel containing, by weight, between 0.10 and 0.35% manganese, less than 0.006% nitrogen, less than 0.025% phosphorus, less than 0.020% sulphur, less than 0.020% silicon, at most 0.08% of at least one of the elements copp... | 07/27/2004 |
| 6699338 | Method of manufacturing corrosion resistant steel materials A steel material excellent in weathering resistance by defining the chemical ingredients in the steel each to a predetermined range and setting an ingredient parameter formula in accordance with the working circumstance thereby reducing the flow rust and,... | 03/02/2004 |
| 6669789 | Method for producing titanium-bearing microalloyed high-strength low-alloy steel A composition and method of making a high-strength low-alloy hot-rolled steel sheet, strip, or plate bearing titanium as the principal or only microalloy strengthening element. The steel is substantially ferritic and has a microstructure that is at least ... | 12/30/2003 |
| 6635313 | Method for coating a steel alloy A method of coating dual phase high strength cold rolled steel having controlled amounts of carbon, manganese, and molybdenum is used as a starting material in a galvanizing/galvannealing process. Conditions in a multi-zone furnace of the galvanizing line... | 10/21/2003 |
| 6632298 | Casting slab for shadow mask, method for heat treatment thereof and material for shadow mask The present invention aims at providing a sophisticated segregation reducing technique which a conventional technique cannot achieve by finding the relationship between the casting structure and the segregation of components at the time of solidification ... | 10/14/2003 |
| 6586117 | Steel sheet having excellent workability and shape accuracy and a method for its manufacture A steel for forming a high strength steel sheet contains, in mass %, C: at most 0.04%, Si: at most 0.4%, Mn: 0.5-3.0%, P: at most 0.15%, S: at most 0.03%, Al: at most 0.50%, N: at most 0.01%, and Mo: 0.01-1.0%. Steel sheet formed from the steel is suitabl... | 07/01/2003 |
| 6582537 | Method for producing cold-rolled bands or sheets The present invention concerns a method for the production of cold-rolled bands or sheets from low-alloy steel with a maximum of 0.2% C, Al, Ti, V, Nb respectively and a maximum of 1% Si and Mn respectively, in addition to a portion of boron required for ... | 06/24/2003 |
| 6558486 | Method of producing cold rolled steel strip Method of producing strip comprising continuously casting plain carbon steel into a strip of no more than 5 mm thickness and coiling the strip. The strip is subsequently uncoiled and cold rolled then annealed to produce a stress relieved microstructure th... | 05/06/2003 |
| 6524408 | Method for producing load-optimized steel strips To produce sheet steel components optimised for loading, a steel strip is cast between two cooled rolls with a variable nip and the thickness of the steel strip is changed by changing the time of contact between the strand shells and the rolls or by chang... | 02/25/2003 |
| 6517955 | High strength galvanized steel plate excellent in adhesion of plated metal and formability in press working and high strength alloy galvanized steel plate and method for production thereof The invention relates to a high strength hot-dip galvanized and galvannealed steel sheets with excellent drawability for press forming and excellent plating adhesion that is useful as a member for automobiles, construction, electric devices and the like, ... | 02/11/2003 |
| 6511557 | Process and relative production line for the direct manufacture of finished pressed or deep drawn pieces from ultrathin hot rolled strip cast and rolled in-line A process for the production of cold rolled finished strip with thickness of 0.5-0.1 mm and a maximum width of 2000 mm for direct preparation of end products such as pressed and deep drawn pieces from thin slab casting with a thickness of the bar leaving ... | 01/28/2003 |
| 6491771 | Method of producing round billets A process and device for the production of continuously cast billets in a production plant employs a vertical, round strand-casting machine with horizontal run-out, at least one descaling device, and several following roll stands. For the production of ro... | 12/10/2002 |
| 6489043 | Iron aluminide fuel injector component An iron aluminide fuel injector component such as a nozzle, plunger or other part is manufactured from iron aluminide or includes an iron aluminide coating on at least a portion of a surface in contact with the fuel which passes through the fuel injector.... | 12/03/2002 |
| 6440235 | Method of manufacturing high productive and high strength rolled H-shaped Rolled H-shapes having high strength and high toughness, and which can be produced using cheaper alloy components than conventional products and which can be manufactured with a high productivity, are disclosed. A method for manufacturing the H-shapes is ... | 08/27/2002 |
| 6372063 | Process for manufacturing metallic component and such metallic component The process for manufacturing a metallic component, such as a wheel part for the rolling system of a vehicle, which includes, in an initial stage, forming the component of a metallic material in a semi-solid state and having a thixotropic structure, and i... | 04/16/2002 |
| 6350355 | Starting cathodes made of copper band for copper electrolysis and a method for the production thereof The object of this invention was to create starting copper cathodes which prevent a memory effect during copper electrolysis, achieving a high production output of electrolytic copper and which can also be manufactured from directly shaped copper sheeting... | 02/26/2002 |
| 6348111 | Method for producing Fe--Ni alloy Fe--Ni alloy sheet having improved press-punching formability is produced by specifying the sulfide-forming elements [X%] and sulfur [%S] and by heating, prior to hot-working, to a temperature dependent upon the contents of these elements. The Fe--Ni allo... | 02/19/2002 |
| 6319338 | High-strength steel plate having high dynamic deformation resistance and method of manufacturing the same The object of the present invention is to provide high-strength steel sheets exhibiting high impact energy absorption properties, as steel materials, to be used for shaping and working into such parts as front side members of automobiles which absorb impa... | 11/20/2001 |
| 6290787 | Process for manufacturing drawable sheet by direct casting of thin strip, and sheet thus obtained The subject for the invention is a process for manufacturing strip. The process includes casting directly from liquid metal a steel strip 1.5 to 10 mm in thickness, subjecting the cast steel strip, in the austenitic phase, to a first hot rolling operation... | 09/18/2001 |
| 6270594 | Composition and method for producing an alloy steel and a product therefrom for structural applications A method of making a high strength low-alloy steel includes the steps of casting an alloy steel into a cast form, hot rolling the cast form into a partially rolled form, and control rolling the partially rolled form to a rolled product. The controlled rol... | 08/07/2001 |
| 6231696 | Method of manufacturing microalloyed structural steel A method of manufacturing microalloyed structural steels by rolling in a CSP plant or compact strip production plant, wherein the cast slab strand is supplied divided into rolling lengths through an equalizing furnace to a multiple-stand CSP rolling train... | 05/15/2001 |
| 6171413 | Soft cold-rolled steel sheet and method for making the same A soft cold-rolled steel sheet contains: 0.06 wt. % or less C, 0.1 wt. % or less Si, 0.5 wt. % or less Mn, 0.03 wt. % or less P, 0.03 wt. % or less S, 0.006 wt. % or less N, 0.009 wt. % or less B and the balance being Fe. The method comprises the steps of... | 01/09/2001 |
| 6110296 | Thin strip casting of carbon steels A substantially carbon free (e.g. 50-80 ppm carbon max.) iron base melt is strip cast to provide a cast strip having a low strength, high ductility, essentially ferrite matrix substantially free of hardening acicular ferrite, bainite and martensite phases... | 08/29/2000 |
| 6109336 | Method of manufacturing a deep-drawing steel strip or sheet In the manufacture of steel strip or sheet, suitable for use as deep-drawing steel for the manufacture of can bodies by deep-drawing and ironing, a low-carbon steel is provided in the form of a slab, the slab is rolled in the austenitic region to reduce i... | 08/29/2000 |
| 6053996 | Method for the manufacture of a strip of formable steel A method for the manufacture of a strip of formable steel comprises the steps of (i) forming liquid steel by continuous casting into a slab having a thickness of not more than 100 mm, (ii) rolling the slab in the austenitic region into an intermediate sla... | 04/25/2000 |
| 6030470 | Method and plant for rolling hot-rolled wide strip in a CSP plant A method and a plant for rolling hot-rolled wide strip from continuously cast thin slabs of ferritic/pearlitic microalloyed structural steels with a microalloy with vanadium and/or with niobium and/or with titanium in a CSP plant or compact strip producti... | 02/29/2000 |
