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Class 148/651 - Heating step follows cold working


Subclass of Class 148 - Metal treatment
Definition: Process wherein at least one heating operation follows a
No. of patents: 154
Last issue date: 12/02/2008


1        
NumberTitleIssue Date
7459038Method for making steel with carbides already in the steel using material removal and deformation
The invention is method of making steel with carbide banding obtaining steel with undissolved carbides distributed within the steel for forming steel with carbide banding, wherein the steel is about 0.3 weight percent to about 2.2 weight percent carbon and at least ...
12/02/2008
7459039Method for forming carbide banding in steel materials using deformation
The method of making steel with carbide banding entails using steel with undissolved carbides distributed within the steel for forming steel with carbide banding, wherein the steel is about 0.3 weight percent to about 2.2 weight percent carbon and at least 0.003 wei...
12/02/2008
7442268Method of manufacturing cold rolled dual-phase steel sheet
A steel sheet having (a) a dual phase microstructure with a martensite phase and a ferrite phase and (b) a composition containing by percent weight: 0.01% to 0.2% C; 0.3% to 3% Mn; 0.05% to 2% Si; 0.1% to 2% Cr; 0.01% to 0.10 Al; and 0.0005% to 0.01% Ca, with the ba...
10/28/2008
7429302Stainless steel sheet for welded structural components and method for making the same
A structural hot-rolled or cold-rolled stainless steel sheet having improved intergranular corrosion resistance and toughness at the welding heat affected zone and further having low strength and high elongation. The composition of the steel sheet contains less than...
09/30/2008
7425240Method for the production of a siderurgical product made of carbon steel with a high copper content
The invention relates to a method for producing a siderurgical product made of carbon steel having a high copper content, according to which: —a liquid steel having the composition: 0.0005%≦1%; 0.5≦Cu≦10%; 0≦Mn≦2%; 0≦Si≦5% 0≦Ti≦0.5%; 0≦Nb≦0.5...
09/16/2008
7399372Method for manufacturing metallic bellows
A metallic bellows, composed of precipitation hardening stainless steel, includes ridge portions and valley portions formed alternately and continuously, an average grain size of 10 to 15 μm, and compressive residual stress of not less than 500 MPa provided to at l...
07/15/2008
7393420Steel tube for bearing element parts and method of manufacturing as well as machining the same
Steel tubes for bearing element parts according to the present invention, wherein the specific compositions are limited and an accumulation intensity of {211} face along with an impact property at ambient temperature in the longitudinal direction of steel tube are s...
07/01/2008
7361237High-strength isotropic steel, method for making steel plates and resulting plates
A steel having a composition, expressed in wt. %, of: 0.03≦C≦0.06; 0.50≦Mn≦1.10; 0.08≦Si≦0.20; 0.015≦Al≦0.070; N≦0.007; Ni≦0.040; Cu≦0.040; P≦0.035; S≦0.015; Mo≦0.008; Ti≦0.005; and boron in an amount such that: 0.65≦B/N≦1.60, the r...
04/22/2008
7360624Electric power steering apparatus
An electric power steering apparatus includes a speed reducing mechanism for decelerating the rotation of a rotatable shaft in an electric motor and a converting mechanism for converting the output rotation of the speed reducing mechanism into the axial movement of ...
04/22/2008
7252724High tensile hot-rolled steel sheet having excellent strain aging hardening properties and method for producing the same
A high tensile strength hot-rolled steel sheet having superior strain aging hardenability, which has high formability and stable quality characteristics, and in which satisfactory strength is obtained when the steel sheet is formed into automotive components, thus e...
08/07/2007
7237647Electric power steering apparatus
An electric power steering apparatus includes a speed reducing mechanism for decelerating the rotation of a rotatable shaft in an electric motor and a converting mechanism for converting the output rotation of the speed reducing mechanism into the axial movement of ...
07/03/2007
7201812Method for manufacturing seamless steel tube
A method for manufacturing a seamless steel tube, wherein a tubing material for the seamless steel tube is produced by a hot working process from a material having less workability, such as a high Cr—high Ni—high C alloy steel including Cr at a content not less ...
04/10/2007
7192551Inductive heating process control of continuous cast metallic sheets
An apparatus for rolling of a powder metallurgical metallic workpiece is provided having a feeding device, a first induction heating apparatus in operable communication with a first RF generator and at least a first hot rolling mill. A process control device monitor...
03/20/2007
7159434Method of manufacturing torsion bar for vehicle steering device and torsion bar
A method of manufacturing a torsion bar includes a first shaping step of reducing a diameter of a round bar steel material according to cold drawing work so as to have a hardness including an inside through a surface layer of 320 or more to 450 or less by Vickers ha...
01/09/2007
7147730High carbon steel and production method thereof
To provide a high carbon steel sheet having excellent hardenability and toughness, and low planar anisotropy of tensile properties affecting workability, and a method of producing the same. A high car steel sheet having chemical composition specified by JIS G...
12/12/2006
7090731High strength steel sheet having excellent formability and method for production thereof
A high strength steel sheet having (2-1) a base phase structure, the base phase structure being tempered martensite or tempered bainite and accounting for 50% or more in terms of a space factor relative to the whole structure, or the base phase structure comprising ...
08/15/2006
7067023Cold rolled steel sheet and galvanized steel sheet having strain age hardenability and method of producing the same
An object of the present invention is to provide a cold-rolled steel sheet and an alloyed hot-dip galvanized steel sheet in which tensile strength is effectively increased by press forming and heat treatment while maintaining excellent deep drawability in press form...
06/27/2006
7056398Method of making ferritic stainless steel sheet having excellent deep-drawability and brittle resistance to secondary processing
A ferritic stainless steel sheet contains abut 0.01 percent by mass or less of carbon; about 1.0 percent by mass or less of silicon; about 1.5 percent by mass or less of manganese; about 11 to about 23 percent by mass of chromium; about 0.06 percent by mass or less ...
06/06/2006
7025838Ferritic stainless steel sheet with excellent workability and method for making the same
A ferritic stainless steel sheet for use in automobile fuel tanks and fuel pipes having smooth surface and resistance to organic acid is provided. The sheet contains, by mass, not more than about 0.1% C, not more than about 1.0 Si, not more than about 1.5% Mn, not m...
04/11/2006
7008488High-strength steel sheet having excellent workability and production process therefor
A high-strength steel sheet comprises carbon: 0.06 to 0.25 mass %, Si: 0.5 to 3.5 mass % and Mn: 0.7 to 4 mass %. Its mother structure is ferrite, its second phase structure comprises martensite and the residual austenite and the second phase structure measured by i...
03/07/2006
6962631Steel plate excellent in shape freezing property and method for production thereof
A ferritic steel sheet wherein a mean value of X-ray random intensity ratios of a group of {100} to {223} orientations is 3.0 or more and a mean value of X-ray random intensity ratios of three crystal orientations of {554}, {111}, and {111} ...
11/08/2005
6959574Continuous pickling and cold-rolling equipment and operating method thereof
A new configuration and operating method therefore improves conventional continuous pickling and cold-rolling systems in response to increasing demands for high-propertied steel plates. The continuous pickling and cold-rolling equipment system comprises a uncoiling ...
11/01/2005
6946041Material for shadow mask, method for production thereof, shadow mask and image receiving tube
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, b...
09/20/2005
6938722Electric power steering apparatus
An electric power steering apparatus includes a speed reducing mechanism for decelerating the rotation of a rotatable shaft in an electric motor and a converting mechanism for converting the output rotation of the speed reducing mechanism into the axial movement of ...
09/06/2005
6936119Method for producing metallic, non-rotationally symmetrical rings with a constant wall thickness over their circumference
The invention is directed to a method and a device for producing metal, non-rotationally symmetric rings with a constant wall thickness along their circumference, particularly cam rings, starting from a hot-rolled pipe from which individual portions are severed, mec...
08/30/2005
6858099Steel material production method
A method for producing a steel material having a high fatigue strength and given a uniform residual stress by a rapid treatment. A marageing steel is subjected to a cold plastic working to have a predetermined dimension, to a solution treatment for 60 minutes or mor...
02/22/2005
6852180Method for making carbon steel bands, in particular packaging steel bands, and resulting bands
The invention relates to the iron and steel industry. More specifically, the invention describes the manufacture of steel strip intended to be converted into thin packaging, such as for drinks and preserved food. ...
02/08/2005
6841014Method for manufacturing a striking plate of a golf club head
A method for manufacturing a striking plate of a golf club head includes the steps of soft heat-treating a flat metal blank to increase its malleability, stamping out a striking plate with an integral wall and a bend portion from the flat metal blank, precise machin...
01/11/2005
6793745Maraging type spring steel
The invention relates to a high-strength, age-hardenable, corrosion-resistant maraging type spring steel, which is essentially comprised of 6.0 to 9.0 wt. % of Ni, 11.0 to 15.0 wt. % of Cr, 0.1 to 0.3 wt. % of Ti, 0.2 to 0.3 wt. % of Be and of a remainder consisting...
09/21/2004
6777863Material for aperture grill for color picture tube, process for making the same, aperture grill, and picture tube
A material is provided for marking aperture grilles for use in a color picture tube which has excellent yield strength, high temperature creep strength, and superior magnetic characteristics as compared to conventional materials. The material is made by cold-rolling...
08/17/2004
6767415Process 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
6764647Corrosion resistant material
A material which is suitable for equipment in oilfield technology and a process for making the material. The material consist essentially of C, Si, Mn, Cr, Mo, Ni, Cu, N in certain weight percentages, with the balance iron and contaminants due to manufacture. The ma...
07/20/2004
6749701Method of inhibiting cold-rolled steel sheet edge cracking, and method of producing the steel sheet
A high-strength, high-toughness martensitic stainless steel sheet has a chemical composition comprising, in mass percent, more than 0.03 to 0.15% of C, 0.2-2.0% of Si, not more than 1.0% of Mn, not more than 0.06% of P, not more than 0.006% of S, 2.0-5.0% of Ni, 14....
06/15/2004
6749696Process for producing a cold-rolled strip or sheet of steel and strip or sheet which can be produced by the process
The production of a cold-rolled strip or sheet of steel with good deforming properties, which is subjected to recrystallizing annealing and, if appropriate, a dressing operation after hot rolling, coiling and cold rolling and has a bake-hardening potential after a s...
06/15/2004
6743306Steel sheet and method for manufacturing the same
The steel sheet comprises: a ferritic phase having ferritic grains of 10 or more grain size number and ferritic grain boundaries; and at least one kind of Nb precipitates and Ti precipitates. The ferritic grain has a low density region with a low precipitate density...
06/01/2004
6706419Cold-rolled steel sheet or hot-rolled steel sheet excellent in painting bake hardenability and anti aging property at room temperature, and method of producing the same
To provide a steel sheet excellent in painting bake hardenability and anti aging property at room temperature: containing, in mass, 0.0001 to 0.20% of C, 2.0% or less of Si, 3.0% or less of Mn, 0.15% or less of P, 0.015% or less of S, and, in addition, 010% or less ...
03/16/2004
6688148Manufacturing process for making engine components of high carbon content steel using cold forming techniques
A method of making high carbon content steel engine components is disclosed. The method includes pre-processing a supply wire of high strength steel having a spheroidized carbide microstructure and high-strength mechanical properties, applying a lubricant...
02/10/2004
6673170Aluminum-killed medium-carbon steel sheet for containers and process for its preparation
Aluminum-killed medium carbon steel sheets, and the steel sheet stock prepared from it, is useful for manufacturing containers for a variety of food and industrial purposes. High mechanical strength is imparted to steel sheeting when the sheeting is proce...
01/06/2004
6673171Medium carbon steel sheet and strip having enhanced uniform elongation and method for production thereof
A method is provided for producing medium carbon steel sheet and strip with enhanced uniform elongation for deep drawing applications. In one embodiment, a steel slab containing carbon 0.30/0.70%, manganese 0.75/2.0%, silicon up to 1.0% max., total alumin...
01/06/2004
6660109Method of manufacturing aluminide sheet by thermomechanical processing of aluminide powders
A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into electrical resistance heating elements having improved room tempe...
12/09/2003
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