Class 148/504 - With working step

Subclass of Class 148 - Metal treatment
Definition: Process which includes a working step.
No. of patents: 40
Last issue date: 04/17/2012

Number	Title	Issue Date
8157933	High-strength hot rolled steel sheet being free from peeling and excellent in surface properties and burring properties, and method for manufacturing the same This hot rolled steel contains, in terms of mass %, C: 0.01 to 0.1%, Si: 0.01 to 0.1%, Mn: 0.1 to 3%, P: not more than 0.1%, S: not more than 0.03%, Al: 0.001 to 1%, N: not more than 0.01%, Nb: 0.005 to 0.08%, and Ti: 0.001 to 0.2%, with a remainder being iron and u...	04/17/2012
7181943	Descaling method for strip-rolling mill Strip is descaled in a rolling line having a scale scrubber and a finishing line downstream of the scale scrubber. The strip is sprayed with water on its upper and under sides at a descaling pressure in the scale scrubber. In the scrubber the strip is treated with w...	02/27/2007
7169243	Aluminum-killed medium-carbon steel sheet for containers and process for its preparation A process is provided for preparation of an aluminum-killed medium-carbon steel sheet containing by weight from 0.040 to 0.080% of carbon, from 0.35 to 0.50% of manganese, from 0.040 to 0.070% of aluminum, from 0.004 to 0.006% of nitrogen, the remainder being iron a...	01/30/2007
6978546	Method for producing ring members involving use of a rotatably driven mandrel A method for producing ring members, such as rings for rolling bearings, through use of a rolling operation involves warming a ring blank, positioning the warmed ring blank over a mandrel which is rotatable about a first axis, and positioning a forming roll rotatabl...	12/27/2005
6939419	Method for producing axially symmetric parts and the article The invention relates to plastic metal working, more specifically to methods for producing parts of the disk- or shell-type having conical, hemispherical, and also combined parts, such as disk-and-shaft ones. The invention is instrumental in producing large axially ...	09/06/2005
6589371	Method of processing titanium metal alloys A method of manufacturing titanium alloys in large-section semi-finished product form with controlled microstructure in micrograin and subcrystalline states of aggregation, with reduced metallographic texture, is achieved with the desired combination of m...	07/08/2003
6440579	Process for producing a drawn wire made of stainless steel, in particular a wire for reinforcing tires, and wire obtained by the process Process for producing a drawn wire, in particular a wire for reinforcing tires, having a diameter of less than 0.3 mm by drawing a base wire rod having a diameter of greater than 5 mm or a predrawn base wire made of steel with the following composition by...	08/27/2002
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
5997664	Method for producing galvanized steel sheet Method for producing a galvannealed steel sheet wherein a slab consisting essentially of C in an amount of 0.004 wt. % or less, N in an amount of 0.004 wt. % or less, Ti in an amount of 0.01 to 0.15 wt %, Si in an amount of 0.05 wt. % or less, Mn in an am...	12/07/1999
5759304	Process for producing hot rolled steel strip with adjusted strength In a process for producing hot rolled steel strip with adjusted strength a steel with 0.04 to 0.06% carbon, at most 1% silicon, at most 1% manganese, 13 to 18% chromium, at most 2% nickel, balance carbide formers and iron, inclusive of impurities due to m...	06/02/1998
5572892	Method of producing silicon steel hot rolled sheets having excellent surface properties In a production method for silicon steel hot rolled sheets by subjecting a slab of silicon steel to a rough hot rolling through high-temperature heating and then subjecting to a finish hot rolling, rolling at the first stand in the finish hot rolling is c...	11/12/1996
5296050	Method of producing grain oriented silicon steel sheets having improved magnetic properties This invention not only improves the formation of fine crystal structure and hence the magnetic properties as well as surface properties while utilizing the merits of the hot strip mill at maximum by conducting the rough rolling in the steps for the produ...	03/22/1994
5188677	Method of manufacturing a magnetic disk substrate A method of manufacturing a titanium alloy magnetic disk substrate comprising (a) cold-rolling an alloy plate at a rolling ratio of no less than 30%, the alloy plate comprising 0.5 wt. % to 1.0 wt. % of Mo and containing oxygen, nitrogen and carbon in amo...	02/23/1993
4931107	Process for producing a cold rolled steel sheet having a good ageing resistance by continuous annealing A cold rolled steel sheet having a good ageing resistance is produced by subjecting a cold rolled steel sheet to continuous annealing including recrystallization, grain growth, quenching, supercooling, reheating and overageing according to inclinatory coo...	06/05/1990
4908071	Method of manufacturing tubes of zirconium alloys with improved corrosion resistance for thermal nuclear reactors The invention relates to a method of making tubes of Zirconium alloys containing 1-5 percent by weight of alloying elements such as Sn, Fe, Cr and Ni. According to the invention an improved corrosion resistance can be reached by means of annealing after e...	03/13/1990
4834808	Producing a weldable, ferritic stainless steel strip A weldable ferritic stainless steel and a method for producing the same is provided wherein the steel consists essentially of up to 0.03 carbon, up to 0.05 nitrogen, 10 to 25 chromium, up to 1.0 manganese, up to 0.5 nickel, up to 1.0 silicon, 0.03 to 0.35...	05/30/1989
4801341	One-sided enamelable hot-rolled steel sheet and process for producing the same A hot-rolled steel sheet suitable for enamelling on one side is disclosed. The steel consists essentially of 0.0050-0.07 wt % C, 0.05-1.5 wt % Mn, 0.03 0.15 wt % P, 0.03-0.1 wt % Al, 0.003-0.010 wt % N, provided that the N content is the sum of at least 0...	01/31/1989
4786338	Method for cooling rolled steels Steel hot-rolled to the desired diameter and allowed to travel forward is quenched with cooling water to a temperature below the bainite transformation temperature chosen from within the following range: where T=surface temperature of the rolled steel at a poi...	11/22/1988
4770719	Method of manufacturing a low yield ratio high-strength steel sheet having good ductility and resistance to secondary cold-work embrittlement The invention relates to a method of manufacturing a high-strength steel sheet by annealing the steel sheet after cold rolling. In order to obtain the low-yield ratio, high-strength steel sheet having high strength and good ductility, resistance to second...	09/13/1988
4745786	Hot rolling method and apparatus for hot rolling A hot rolling method, wherein portions of a hot-rolled steel material having suffered a temperature fall below Ar3 transformation temperature thereof during hot rolling are subjected to an intermediate heating to have a temperature not less tha...	05/24/1988
4738733	Method for heat-treatment of a strip An improved method for heat-treatment of a strip in a continuous annealing installation in which the strip is heated or cooled by bringing it into contact with a heating or cooling roll having a thermal medium passed there-through. The improvements exist ...	04/19/1988
4709572	Method of processing continuously cast slabs A continuously cast slab is processed to prevent the formation of surface cracks by applying plastic strains to the surface layer of the slab in which a process of solidification is taking place. The method comprises pressing a projection against the slab...	12/01/1987
4698103	Method of manufacturing dual phase strip steel and steel strip manufactured by the method In a method of manufacturing a dual phase steel a strip of thickness 0.1 to 0.5 mm from an unalloyed low C, low Mn steel composition of 0.02-0.15% C and 0.15-0.50% Mn, which method includes continuous annealing, a flat product can be obtained without stri...	10/06/1987
4676844	Production of formable thin steel sheet excellent in ridging resistance A process for producing a formable thin steel sheet excellent in ridging resistance. Said process comprises finishing a low carbon steel at a strain rate of not less than 300 (s-1) in a temperature range of 800° to 300° C. in at least one pas...	06/30/1987
4668308	Method and apparatus for manufacturing rails At the exit from the hot rolling mill the rail temperature is reduced to a value not less than that at which the pearlite transformation begins in the rail head. From this temperature the continuously advancing rail is subjected to rapid cooling in a rapi...	05/26/1987
4605449	Process for producing a rolled steel product having high weldability, a high yield strength and a good notch impact toughness at very low temperatures A process for producing rolled steel products, especially reinforcing rod for concrete or other elements to be encased in concrete and having good weldability, a high yield strength and high energy absorption for the Charpy V impact test at very low tempe...	08/12/1986
4495009	Method of cooling cold steel strip with cooling rolls A method of cooling band or hoop steels with hollow cooling rolls through which a cooling medium flows to absorb the heat of the steel strips trained about and in contact with the hollow cooling rolls, thereby cooling the steel strips. According to the in...	01/22/1985
4494998	Process for producing austenitic stainless steels less susceptible to rolling defects Process for producing austenitic stainless steels, which process prevents occurrence of rolling defects, particularly slivers. Specifically, process for controlling casting conditions on the basis of nitrogen contents in the molten steel and further contr...	01/22/1985
4437903	Method for producing two-phase hot rolled steel sheet having high strength and low yield ratio A method for producing two-phase steel sheets having a material quality equal to or better than the conventional two-phase steel sheets by an addition of a very small amount of B so as to considerably reduce the contents of steel constituents, such as Mn ...	03/20/1984
4421572	Thermomechanical treatment of alloys An article of an alloy of AISI 316 stainless steel is reduced in size to predetermined dimensions by cold working in repeated steps. Before the last reduction step the article is annealed by heating within a temperature range, specifically between 1010° ...	12/20/1983
4376661	Method of producing dual phase structure cold rolled steel sheet A method of producing a dual phase structure cold rolled steel sheet having tensile strength 35 to 50 kg/mm2, yield ratio less than 60% and high elongation which comprises hot rolling and cold rolling by conventional process a steel containing ...	03/15/1983
4374682	Process for producing deep-drawing cold rolled steel strips by short-time continuous annealing A process for producing a cold rolled steel strip having excellent workability by a short-time continuous annealing, which process is constituted by hot rolling a low carbon steel slab of steel having a carbon content of from about 0.003 to 0.08% into a s...	02/22/1983
4336080	Method for manufacturing high-strength cold-rolled steel strip excellent in press-formability A method for manufacturing a high-strength cold-rolled steel strip excellent in press-formability, which comprises the steps of: preparing a slab of an aluminum-killed steel consisting essentially of, in weight percentage: the balance iron and incidental ...	06/22/1982
4285741	Process for producing high-strength, low yield ratio and high ductility dual-phase structure steel sheets Process for producing a high strength, low yield ratio and high ductility dual-phase structure steel sheet having a structure composed mainly of a ferrite phase and a rapidly cooled transformation phase and having excellent formability with a tensile stre...	08/25/1981
4265679	Process for producing stainless steels for spring having a high strength and an excellent fatigue resistance Stainless steels for springs having a high strength and an excellent fatigue resistance are produced by heat treating austenitic stainless steels having such a composition that austenite stability index, Md30. is 0° C. to +80° C. at a final a...	05/05/1981
4256516	Method of manufacturing non-magnetic Fe-Mn steels having low thermal expansion coefficients and high yield points Low nonmagnetic steel having a thermal expansion coefficient of 1.0~1.3×10-5 /°C. and a high yielding point of higher than 36 Kg/mm2 consists of less than 0.5% by weight of C, less than 2% by weight of Si, 20~30% by weight of Mn, a...	03/17/1981
4191597	Heat treatment for martensite cured alloys A process for improving the mechanical properties of martensite curred alloys comprising a cold mechanical working, a heat treatment within specified parameters, and a rapid cooling below 400° C. A continuous process is described which results in materia...	03/04/1980
4057989	Method for levelling a metal strip or sheet A method for levelling a metal strip or sheet in which the metal strip or sheet is subjected to repeated bending by means of a roll arrangement of two or more rolls having a diameter of at least 600 times the thickness of the metal while cooling the metal...	11/15/1977
3981752	Method for controlling the temperature of steel during hot-rolling on a continuous hot-rolling mill Method for hot-rolling carbon and alloy steels in a continuous hot-rolling mill including spraying water onto the surface of the steels at selected locations in the continuous hot-rolling mill during hot-rolling of the steels in order to control the tempe...	09/21/1976
3939015	In-line heat treatment of hot-rolled rod Hot rolled steel rod, containing less than 0.4% C, is cooled by a prescribed, interrupted-cooling procedure for producing rod with enhanced ability to receive cold work. In cooling from the austenite range, the rod is held within a specified, narrow tempe...	02/17/1976

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Class 148/504 - With working step