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| Number | Title | Issue Date |
| 7285174 | Method for producing metallic strips A method for producing metallic strips having a high-grade cube texture based on nickel, copper, aluminum, silver or alloys of these metals including austenitic iron-nickel alloys makes it possible to obtain, during a subsequent annealing process and with lower tota... | 10/23/2007 |
| 7261856 | Electromigration effect-insignificant alloys and the alloys' designing method This invention takes advantage of the characteristics that the effective charge numbers of different metals have different values and even with different signs, and alloys are prepared with the metals of different signs of effective charge numbers. The effective cha... | 08/28/2007 |
| 7247403 | Surface modified stainless steels for PEM fuel cell bipolar plates A nitridation treated stainless steel article (such as a bipolar plate for a proton exchange membrane fuel cell) having lower interfacial contact electrical resistance and better corrosion resistance than an untreated stainless steel article is disclosed. The treate... | 07/24/2007 |
| 7169351 | Method of production of surface densified powder metal components A method for densification of the surface layer of an optionally sintered powder metal component comprising the steps of decarburizing the surface layer for softening the surface layer of the component, and densifying the surface layer of the component. ... | 01/30/2007 |
| 7166174 | Bundle drawn stainless steel fibers The invention relates to stainless steel fibers obtained by bundled drawing of stainless steel wires embedded in a matrix material. The composition of the stainless steel fibers comprises iron and the following components expressed in percent by weight: C £ 0.05%, ... | 01/23/2007 |
| 7055244 | Method of manufacturing flat wire coil springs to improve fatigue life and avoid blue brittleness The present invention relates to a method of forming a coil of spring wire by winding a wire into a coil spring formed of a plurality of rings of the wire wherein each of the rings has a substantially constant strain rate. The forming speed of the wire being wound i... | 06/06/2006 |
| 7049022 | Metal separator for fuel cell and production method therefor A metal separator for fuel cells and a production method for the separator balances high corrosion resistance and high performance of electric generation due to low contact resistance. In the metal separator for fuel cells, a passivation film is formed on the surfac... | 05/23/2006 |
| 6994916 | Friction stir grain refinement of structural members The present invention provides an improved structural assembly constructed of a plurality of structural members secured together. At least one of the plurality of structural members defines a first region characterized by comparatively high operational stress and a ... | 02/07/2006 |
| 6949149 | High strength, high carbon steel wire To achieve a drawn wire with a tensile strength defined by the equation of Y=Yo exp(A2εd) wherein Y is the tensile strength in MPa (N/mm2), Yo is the strength of as patented wire, A2 is a coefficient... | 09/27/2005 |
| 6852178 | Method for propagating vibratory motion into a conductive fluid and using the method to solidify a melted metal A static magnetic field and a wave are applied to an electrically conductive fluid so as to satisfy the mathematical expression 2Ï€f | 02/08/2005 |
| 6823706 | Steel wire and method of manufacturing the same A steel wire, 0.10-0.40 mm in diameter, obtained by subjecting a high-carbon (0.70-0.90 wt. %) steel wire material to heat treatment and wire drawing, wherein its tensile strength and test values of special repeated torsional tests satisfy a predetermined relation; ... | 11/30/2004 |
| 6627006 | Method of controlling a treatment line The invention relates to a method of controlling a treatment line. According to said method a) a correlation between one or several variable parameters of the chemical and/or physical processes of the treatment line and one or several characteristic value... | 09/30/2003 |
| 6478898 | Method of producing tool steels A method of producing a tool steel comprises quenching a steel containing, by mass percent, C: 0.25 to 0.60%, Si: 0.10 to 1.20%, Mn: 0.20 to 1.50%, Ni: 0.50 to 2.00%, Cr: 1.00 to 4.20%, Mo: 0.30 to 2.00%, V: 0.10 to 1.00% and Al: 0.005 to 0.10%, in order ... | 11/12/2002 |
| 6346337 | Bulk amorphous metal magnetic component A bulk amorphous metal magnetic component has a plurality of layers of amorphous metal strips laminated together to form a generally three-dimensional part having the shape of a polyhedron. The bulk amorphous metal magnetic component may include an arcuat... | 02/12/2002 |
| 6190469 | Method for manufacturing high strength and high formability hot-rolled transformation induced plasticity steel containing copper A method for producing a high strength hot-rolled steel sheet with good formability applicable to automobiles, industrial machines and the like is disclosed. The basic composition of TRIP steel is adjusted wherein Cu is added to improve the strength by pr... | 02/20/2001 |
| 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 |
| 6048416 | Steel, steel wire, and process for forming drawn wire of steel Steel, steel wire, and a process for forming a drawn wire, especially tire-reinforcing wire of diameter smaller than 0.4 mm, by drawing a steel of the following composition by weight: 0.005%ࣘcarbonࣘ0.050%; 0.005%ࣘnitrogenࣘ0.050%; 0.1%ࣘsilic... | 04/11/2000 |
| 5888318 | Method of producing ferritic iron-base alloys and ferritic heat resistant steels A method of designing a ferritic iron-base alloy having excellent characteristics according not to the conventional trial-and-error technique but to a theoretical method, and a ferritic heat-resistant steel for use as the material of turbines and boilers ... | 03/30/1999 |
| 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 |
| 5599407 | Method for estimating inclusion content of metals using reflectance A method for estimating the inclusion content of a metal, the method involving three steps. The first step is to section the metal to create an exposed inner surface of the metal. The second step is to measure the reflectance of the exposed inner surface ... | 02/04/1997 |
| 5497817 | Method for continuously annealing steel strip In an apparatus for continuously annealing a steel strip after cold rolling, stable operation of the annealing apparatus can be obtained by preventing slippage of bridle rolls and hearth rolls. The diameter D of a bridle roll is set so that a surface pres... | 03/12/1996 |
| 5462613 | Method and apparatus for producing steel rods with a desired tensile strength and model for simulating same A method and apparatus are provided for producing rods having a desired tensile strength from a rod manufacturing process set to an optimal operating condition. Initially, the rod manufacturing process is set in an optimal condition to produce rods at a m... | 10/31/1995 |
| 5433420 | Device for the heat treatment of at least one metal wire with heat-transfer plates A device (100) for the heat treatment of at least one metal wire (1), chaterized by passing the wire (1) within at least one pair of thermal transfer plates (2, 2a, 2b) between two grooves (8, 8a, 8b) made in the two plates (2, 2a, 2b) of each of said pa... | 07/18/1995 |
| 5413639 | Method of manufacturing low-core-loss grain oriented electrical steel sheet A method of manufacturing a low-core-loss oriented electrical steel sheet. Thread-like grooves are formed in a cold-rolled grain oriented electrical steel sheet having a final thickness of about 0.27 mm or less in a direction within the range of about 30Â... | 05/09/1995 |
| 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 |
| 5318639 | Method of manufacturing grain oriented silicon steel sheets Method of manufacturing a grain oriented silicon steel sheet. An annealing separating agent mainly composed of MgO is coated on a surface of a decarburized silicon steel sheet. The silicon steel sheet is subjected to secondary recrystallization annealing ... | 06/07/1994 |
| 5252151 | Fe-Ni alloy sheet for shadow mask having a low silicon segregation and method for manufacturing same An Fe-Ni alloy sheet for a shadow mask, which consists essentially of: nickel: from 34 to 38 wt. %, silicon: from 0.01 to 0.15 wt. %, manganese: from 0.01 to 1.00 wt. %, and the balance being iron and incidental impurities. The surface portion of the alloy sheet has a s... | 10/12/1993 |
| 5127965 | Fe-Ni alloy sheet for shadow mask and method for manufacturing same An Fe-Ni alloy sheet for a shadow mask, which consists essentially of: nickel: from 34 to 38 wt. %, silicon: from 0.01 to 0.15 wt. %, manganese: from 0.01 to 1.00 wt. %, and the balance being iron and incidental impurities; the surface portion of the alloy sheet having ... | 07/07/1992 |
| 5104462 | Scanning induction hardening process by using radially moving induction coil A scanning induction hardening process in which a steel workpiece is surface hardened by progressively traversing its length with an inductor coil energized by an alternating electric current and immediately thereafter quenching the heated portion of the ... | 04/14/1992 |
| 5089059 | Method and device for the heat treatment of metal straps A method and device (100) for heat treating a metal strap (1), characteri by passing the strap (1) within an enclosure (2) containing a gas (3) which is practically free of forced ventilation, in such a manner that a transfer of heat takes place between ... | 02/18/1992 |
| 5032191 | Methods and devices for obtaining a homogeneous austenite structure A method and device for thermally treating at least one carbon steel wire such a way as to obtain a homogenous austenite structure, characterized by the fact that the wire is heated in a tube containing a gas which has practically no forced ventilation, ... | 07/16/1991 |
| 4983227 | Process and apparatus for heat-treating carbon steel wires to obtain a fine pearlitic structure Carbon steel wire, which has been maintained at a temperature above the Ac3 ransformation temperature, is heat-treated to obtain a fine pearlitic structure by passing it through a tube containing a gas practically without forced ventilation and surrounded ... | 01/08/1991 |
| 4900376 | Hardening a cylindrical hollow object preferably made of steel A method for hardening cylindrical hollows made of steel, includes heating followed by cooling, under utilization of a water bath while the hollow rotates about its longitudinal axis, and is partially immersed in the bath, the axis being parallel to the s... | 02/13/1990 |
| 4883545 | Process for making a metallic article with improved resistance to surface cracking during cold forming A process for improving the cold workability of a metallic article is disclosed. The process includes compressive working followed by heat treatment of a metallic article to provide a duplex microstructure including relatively fine grains near the surface... | 11/28/1989 |
| 4838955 | Method for the manufacture of hard steel sheet from Al-killed continuous-cast carbon-manganese steel Steel sheet manufactured from Al-killed continuous cast carbon-manganese steel and having a hardness in the range 57 to 73 HR30T is characterized by a content of 0.03 to 0.10% by weight C and 0.15 to 0.50% by weight Mn, and an amount Z in ppm of dissolved... | 06/13/1989 |
| 4820354 | Method for producing a workpiece from a corrosion- and oxidation-resistant Ni/Al/Si/B alloy A workpiece produced from a corrosion- and oxidation-resistant Ni/Al/Si/B alloy, which possesses simultaneously good high-temperature strength and high ductility, is produced by casting an alloy containing Al=12 to 23 atom-%, Si=1 to 12 atom-%, B=0.1 to 2 atom... | 04/11/1989 |
| 4820357 | Low grade material axle shaft A new SAE 1541M alloy steel composition consisting essentially of 0.40-0.48% carbon, 1.35-1.61% maganese, 0.16-0.30% silicon, 0-0.23% chromium and the balance iron and other materials not affecting hardenability of the steel, especially adapted for formin... | 04/11/1989 |
| 4773949 | Process for preventing transverse displacement of metal strip A process for preventing transverse displacement of metal strip comprises correcting a shape of metal strip into flat form prior to the travel of the metal strip into a continuous annealing furnace when continuously annealing the metal strip in the furnac... | 09/27/1988 |
| 4721153 | High-chromium compound roll A compound roll for rollng composed of a shell made of high-chromium cast iron and a core made of cast or forged steel. The shell has a large residual compressive stress. The high-chromium cast iron shell has a composition by weight of 2.0-3.5% C, 0.5-1.5... | 01/26/1988 |
| 4647319 | Method for quantitatively detecting the decarburization reaction in the production process of an electrical steel sheet The decarburization reaction which occurs in the production of an electrical steel sheet is quantitatively detected by passing an electromagnetic wave beam into the vicinity of the sheet, which is positioned in an annealing furnace, and then measuring the... | 03/03/1987 |
