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| Number | Title | Issue Date |
| 7815757 | Water-cooling method of steel material The oxide film thickness of the steel material surface (dH2O+do2) is made to become 15 nm or less where post-treatment after water-cooling is not needed by suitably setting the conditions of the water-cooling start temperature (Ti), ... | 10/19/2010 |
| 7435307 | Fe-Ni based permalloy and method of producing the same and cast slab A Fe—Ni based permalloy comprises Ni: 30-85 wt %, C: not more than 0.015 wt %, Si: not more than 1.0 wt %, Nin: not more than 1.0 wt %, P: not more than 0.01 wt %, S: not more than 0.005 wt %, O: not more than 0.0060 wt %, Al: not more than 0.02 wt % and, if neces... | 10/14/2008 |
| 7270764 | Method for removing aluminide coating from metal substrate and turbine engine part so treated A method for selectively removing an aluminide coating from at least one surface of a metal-based substrate by: (a) contacting the surface of the substrate with at least one stripping composition comprising nitric acid at a temperature less than about 20° C. to deg... | 09/18/2007 |
| 7063755 | Method for laser annealing A method for laser annealing a part includes the steps of providing automated tooling, providing a laser, and providing a metal part to be annealed. The method also includes the steps of moving either one of the laser or metal part by the automated tooling relative ... | 06/20/2006 |
| 6925352 | Method and system for prediction of precipitation kinetics in precipitation-hardenable aluminum alloys Disclosed are a method and a system for predicting precipitation kinetics in precipitation-hardenable alloys, such as the 7000 series aluminum alloys, and for optimizing conditions for thermal treatment thereof. The method includes the steps of measuring a real-time... | 08/02/2005 |
| 6860950 | Method for cooling a hot-rolled material and corresponding cooling-line models To determine the temperature profile (Tm(t)) of a hot-rolled material (1) in a cooling line (5), a heat conduction equation which takes the following form ∂ e ... | 03/01/2005 |
| 6410163 | High strength thin steel sheet, high strength alloyed hot-dip zinc-coated steel sheet, and method for producing them The present invention provides a high strength thin excellent workability and galvanizability, having a composition comprising from 0.01 to 0.20 wt. % C, up to 1.0 wt. % Si, from 1.0 to 3.0 wt. % Mn, up to 0.10 wt. % P, up to 0.05 wt. % S, up to 0.10 wt. ... | 06/25/2002 |
| 6398102 | Method for providing an analytical solution for a thermal history of a welding process A method for providing an analytical solution for a thermal history of a welding process having multiple weld passes. The method includes the steps of inputting a plurality of files and parameters, preprocessing information from the plurality of files and... | 06/04/2002 |
| 6350326 | Method for practicing a feedback controlled laser induced surface modification This invention is directed toward a method of calculating the total laser energy needed to produce one or more selected laser induced surface modification reactions in a substrate moving relative to a laser beam. The present invention is further directed ... | 02/26/2002 |
| 6103394 | Thin steel sheet having excellent rectangular drawability and production method thereof A thin steel sheet having excellent rectangular drawability is produced by completing roughing rolling of steel containing C: 0.02 wt % or less, Si: 0.5 wt % or less, Mn: 1.0 wt % or less, P: 0.15 wt % or less, S: 0.02 wt % or less, Al: 0.01 to 0.10 wt %,... | 08/15/2000 |
| 6099666 | Variable cooling rate quench method and apparatus A variable rate quench system allows the cooling of a heated workpiece to be controlled more closely. A liquid quenchant used in the system has an initial temperature, density and heat extraction index. The system comprises a first tank containing the liq... | 08/08/2000 |
| 5868817 | Process for producing steel by converter The present invention provides a process for efficiently dephosphorizing, dephosphorizing and decarbonizing, or desulfurizing, dephosphorizing and decarbonizing a hot metal in a converter. The amount of flux to be charged and the amount of bottom-blown ga... | 02/09/1999 |
| 5496424 | Hydrogen absorbing alloy and process for preparing same A hydrogen absorbing alloy represented by the general formula R1-x Ax (Ni5-y By)z wherein R is Mm (misch metal) or La, A is at least one element selected from the group consisting of Ce, Nd, Pr, Sm an... | 03/05/1996 |
| 5458703 | Tool steel production method A tool steel production method and a tool steel are disclosed in this invention. The method consists of following two steps: 1. Toughness (Ch) of the tool steel is evaluated from a formula: Ch=f(Vp, H, T) after estimating Vp, a square sum of output voltage of total... | 10/17/1995 |
| 5409553 | Process for manufacturing galvannealed steel sheets having high press-formability and anti-powdering property It is an object to provide a process for manufacturing galvannealed steel sheets having high anti-powdering property as required when they are press formed, and stabilized frictional properties in a coil. Steel sheets are plated in a bath having a low alu... | 04/25/1995 |
| 5094702 | Menu driven heat treatment control of thin walled bodies A process for controlling the heating of a thin-walled body according to a predetermined temperature program by means of electrically controllable heaters, comprising: disposing the heaters adjacent one surface of the body such that each heater is in faci... | 03/10/1992 |
| 5049207 | Heat treatment process for bushing used in track of endless track tractor A heat treatment process applicable to bushings used in tracks of endless track tractor comprises heating a bushing made of middle carbon low alloy steel material from the outer peripheral surface thereof until the inner circumferential surface thereof ac... | 09/17/1991 |
| 5026436 | Process for the production of tubular bodies In a process for the production of tubular bodies that are resistant to stress corrosion cracking, in particular non-magnetizable drill stems and rod sections of austenitic steels, after solution treatment, quenching, and after deformation at a temperatur... | 06/25/1991 |
| 4973367 | Method of manufacturing steel sheet having excellent deep-drawability A method of manufacturing a steel sheet having excellent deep-drawability. A steel blank is rolled into a steel sheet having a predetermined thickness. The steel contains C: not more than 0.008 wt %, Si: not more than 0.5 wt %, Mn: not more than 1.0 wt %,... | 11/27/1990 |
| 4913746 | Method of producing a Zn-Fe galvanneal on a steel substrate A process for producing a galvanneal layer on a steel substrate, including forming a Zn-Fe coating having a predetermined Fe content F (wt. %) on the steel substrate; and heat treating the Zn-Fe coating on the substrate from a predetermined starting tempe... | 04/03/1990 |
| 4878960 | Process for preparing alloyed-zinc-plated titanium-killed steel sheet having excellent deep-drawability There is disclosed a process for preparing alloyed-zinc-plated steel sheet having excellent deep drawability, which comprises adjusting the temperature of substrate steel sheet of titanium-killed steel essentially consisting of Cࣘ0.01%, Si | 11/07/1989 |
| 4747887 | Method and device for actuating shape memory alloy member A method for actuating a member made of shape memory alloy, including stressing the shape memory alloy member so that its Ms point becomes positioned between its As point and its Af point, and applying a pulsed supply of electricity to it to heat it up is... | 05/31/1988 |
| 4743309 | Method for zone heat treatment of a metallic workpiece A method for zone heat treatment of metallic workpiece with a comparatively large cross-section, in which the workpiece is successively passed through a zone of higher temperature in such a way that the temperature of the workpiece initially rises steeply... | 05/10/1988 |
| 4729800 | Method for cooling steel strip Disclosed is an improvement of final cooling of the steel strip by immersing in cooling water, which strip has been cooled through a cooling zone in a continuous heat treating line. The improvement is achieved by injecting cooling water to the surface of ... | 03/08/1988 |
| 4720310 | Process for effecting the controlled cooling of metal sheets The process controls the cooling of a metal sheet so as to impart thereto a predetermined crystalline structure. The sheet to be cooled is passed through a case containing a mass of regularly renewed cooling fluid. The flow of the cooling fluid is control... | 01/19/1988 |
| 4713125 | Method of cooling steel strip in continuous heat treating line The steel strip which has been cooled through a cooling zone in a continuous heat treating line is finally cooled by immersing in cooling water in a cooling tank under the controlling in accordance with the following formula: ##EQU1## With such ... | 12/15/1987 |
| 4658362 | Process modeling for superplastic forming of metal sheets Methods for developing particular models which accurately predict the material, process and design parameters for superplastic forming of metal parts under optimum conditions consistent with the desired properties in the finished part. Generalized control... | 04/14/1987 |
| 4610735 | Method of modulated cooling to minimize deformation of flat metallurgical products The invention concerns a method for minimizing deformation during rapid cooling of flat metallurigcal products such as sheets, strips, flattened portions, wide sections and the like. The method comprises rapidly cooling the product by means of a fluid (or ... | 09/09/1986 |
| 4596615 | Method of cooling hot steel plates Hot steel plate as hot-rolled is passed forward longitudinally through pairs of top and bottom rollers disposed in the direction of the plate travel. The steel plate is cooled with water supplied to its top and bottom surfaces from the nozzles on a plural... | 06/24/1986 |
| 4589931 | Method of producing a thin steel sheet having baking hardenability and adapted for drawing The present invention provides a method for producing a thin cold rolled steel sheet, which is adapted to be formed into, for example, an external automotive plate. The method includes an appearance-finishing step by bake-coating as a final step after dra... | 05/20/1986 |
| 4526627 | Method and apparatus for direct heat treatment of medium- to high-carbon steel rods A method and apparatus for the direct heat treatment of medium- to high-carbon steel rods which provides an increased tensile strength and drawability by subjecting hot-rolled steel rods to controlled cooling with a coolant. Expanded spiral coils of hot-r... | 07/02/1985 |
| 4502897 | Method for producing hot-rolled steel sheets having a low yield ratio and a high tensile strength due to dual phase structure The present invention aims to obtain C-Si-Mn-Cr system of hot-rolled dual phase structured steel sheets having a low yield ratio YR of not greater than 65%, an excellent strength-elongation balance M, a low variation in quality and an excellent cold forma... | 03/05/1985 |
| 4486245 | Method of producing nickel base alloy structure with NiAl coating A structure comprising a main body formed of a nickel base alloy, and a NiAl coating applied to the main body, wherein the NiAl coating includes a nickel rich NiAl layer and an aluminum rich NiAl layer and the thickness ratio of the nickel rich NiAl layer... | 12/04/1984 |
| 4475963 | Method for postweld heat treatment A method for postweld heat treatment (hereinafter referred to as PWHT) for multilayer welding, in which the terminating point of the PWHT is correctly judged to preclude cracking due to insufficient treatment or uneconomical excessive treatment, the metho... | 10/09/1984 |
| 4440584 | Method and apparatus for cooling steel sheet A method and an apparatus for cooling a steel sheet, which comprises: ejecting cooling water onto a steel sheet laid horizontally from above and from below said steel sheet immediately after the completion of hot rolling to cool said steel sheet; shieldin... | 04/03/1984 |
| 4287008 | Method of improving the ductility of the coating of an aluminum-zinc alloy coated ferrous product This invention relates to an aluminum-zinc alloy coated ferrous product whose coating is highly ductile, and to the method whereby such improved coating ductility may be realized. The process is characterized by the steps of thermally treating the aluminu... | 09/01/1981 |
| 4191600 | Method of continuously heat-treating steel sheet or strip Cold-rolled steel sheet or strip (e.g. containing max. 0.15% C., max. 0.60% Mn, max. 0.020% Si, and 0.001-0.050% B) is heated to a temperature higher than its recrystallization temperature and then cooled by immersion in an aqueous bath at above 75° C. T... | 03/04/1980 |
| 4188241 | Method for producing high tensile strength, high ductility, low yield ratio hot rolled steel sheet A method for producing a plain low carbon hot rolled steel strip or sheet having a low yield ratio, not higher than 70%, high ductility and high tensile strength comprising: hot rolling a steel slab with its finishing temperature not lower than the Ar | 02/12/1980 |
| 4164435 | Method for heat treatment of link chains A method and an apparatus for heat treatment of link chains wherein the link chain is continuously introduced into a high frequency induction furnace for quenching to heat it in a manner such that the austenitizing temperature at curved portions of a link... | 08/14/1979 |
| 4078949 | Method for improving the surface quality of stainless steels and other chromium-bearing iron alloys A method of surface conditioning a stainless steel to remove oxides and imperfections therefrom whereby the steel is heated in a controlled atmosphere having an oxygen potential, (log PO.sbsb.2) between (-29,280/T) + 5.6 and (-27,840/T) + 8.1 w... | 03/14/1978 |
