Class 148/548 - With tempering, ageing, solution treating (i.e., for hardening), precipitation hardening or strengthening, or quenching

Subclass of Class 148 - Metal treatment
Definition: Process which involves a step of tempering, ageing, solution
No. of patents: 39
Last issue date: 03/20/2012

Number	Title	Issue Date
8137485	Process and device for producing strips of silicon steel or multiphase steel The invention relates to a method for producing strips (1) of steel, preferably of silicon steel, in particular of grain-oriented silicon steel or of multiphase steel in which a slab (3) is initially cast in a casting machine (2), wherein this i...	03/20/2012
7323070	Maraging steel excellent in fatigue characteristics and method for producing the same A process of producing a maraging steel includes melting a steel of a defined composition, casting the molten steel to obtain a steel ingot, hot forging the steel ingot at a forging ratio of at least 4, then soaking the forged piece one or more times to keep the for...	01/29/2008
7160398	Method of making rapidly solidified alloy for magnet A melt of an alloy, represented (Fe1-mTm)100-x-y-zQxRyMz, where T is Co and/or Ni, Q is B and/or C, R is at least one rare-earth element, M is selected from Al, Si, Ti, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, ...	01/09/2007
6971351	Valve timing adjusting device A region including an engaging hole is given surface treatment such as partial quench hardening by induction hardening for improving surface hardness of the region. The partial quench hardening by induction hardening provides the region with satisfactory mechanical ...	12/06/2005
6863749	Method of improving the toughness of low-carbon, high-strength steels A method of post-solidification processing to minimize the content of extremely coarse grain-refining precipitates that may form during solidification is low-alloy and alloy high-strength steels containing approximately 0.09-0.17% by weight C so as to provide improv...	03/08/2005
6841011	Iron base high temperature alloy and method of making The present invention is directed to an iron, aluminum, chromium, carbon alloy and a method of producing the same, wherein the alloy has g good room temperature ductility, excellent high temperature oxidation resistance and ductility. The alloy includes about 10 to ...	01/11/2005
6702905	Corrosion and wear resistant alloy An iron-based corrosion resistant and wear resistant alloy. The alloy can comprise (in weight percent) 0.005-0.5% boron, 1.2-1.8% carbon, 0.7-1.5% vanadium, 7-11% chromium, 1-3.5% niobium, 6-11% molybdenum, and the balance including iron and incidental im...	03/09/2004
6579385	Free machining steel for use in machine structure of excellent mechanical characteristics Free machining steel for use in machine structures capable of stably and reliably providing excellent machinability (chip disposability and tool life) and mechanical characteristics (transverse direction toughness) comparable, in a Pb free state, with exi...	06/17/2003
6500283	Method of improving environmental resistance of investment cast superalloy articles A method for promoting the environmental resistance of nickel, iron and cobalt-base superalloys of the type alloyed to develop a protective oxide scale. The method entails a technique for removing sulfur during or subsequent to the casting operation. The ...	12/31/2002
6494970	Heat resistant steel casting and method of manufacturing the same Disclosed is a heat resistant steel casting, comprising C, 0.15-0.3%, Si, 0.1-0.30%, Mn, 0.01-0.1%, Cr, 2.0-2.5%, Mo, 0.3-0.8%, V, 0.23-0.3%, W, 1.6-2.6%, N, 0.005-0.03%, B, 0.001-0.004%, impurity elements including Ni not larger than 0.2%, P not larger t...	12/17/2002
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
6221184	Process of the production of high-carbon cast steels intended for wearing parts The invention relates to a process for producing cast wearing parts of high-carbon alloy steels having the composition expressed in weight % of: carbon 0.6 to 2% manganese 0.5 to 6% ...	04/24/2001
6033497	Pitting resistant duplex stainless steel alloy with improved machinability and method of making thereof A highly pitting resistant duplex stainless steel alloy is provided which compromises in weight percentages: C: 0.10% and below; Si: 1.5% and below; Mn: 2.0% and below; Cr: 25.0% to 27.0%; Ni: 5.0% to 7.5%; Cu: 1.5% to 3.5%; N: 0.15% and below; Mo: 0.5% a...	03/07/2000
5855701	Method of manufacture high carbon content steel Alloyed steel with high carbon content having a composition, expressed in percentage weight: carbon from 1.1 to 2.0%, manganese from 0.5 to 3.5%, chromium from 1.0 to 4.0%, silicon from 0.6 to 1.2%, the remainder being iron with the usual impurity content...	01/05/1999
5849114	Method of forming plate-type track shoe A method of manufacturing a plate-type track shoe. The method involves casting or obtaining a cast, plate-type track shoe which has been made from a suitably high quality ductile iron and heating the plate-type track shoe to a desired austentizing tempera...	12/15/1998
5803152	Microstructurally refined multiphase castings The present invention relates to eutectic alloy systems, such as white irons, in which a primary phase grows out of the melt when the melt is cooled below the liquidus temperature and comprises pouring the molten metal alloy at a temperature at or above t...	09/08/1998
5738737	Process for making superplastic steel powder and flakes In a process for making superplastic steel powder or flakes, molten steel is rapidly solidified to form a solidified material comprising substantially single-phase austenitic steel powder or flakes having a grain size of no greater than about 2 μm. The p...	04/14/1998
5650024	Martensitic heat-resisting steel excellent in HAZ-softening resistance and process for producing the same A martensitic heat-resisting steel comprises, in terms of % by mass, 0.01 to 0.30% of C, 0.02 of 0.80% of Si, 0.20 to 1.00% of Mn, 5.00 to 18.00% of Cr, 0.005 to 1.00% of Mo, 0.20 to 3.50% of W, 0.02 to 1.00% of V, 0.01 to 0.50% of Nb, 0.01 to 0.25% of N,...	07/22/1997
5522949	Class of ductile iron, and process of forming same A new class of ductile iron is formed by the hot isostatic pressing of a ductile iron casting, followed by austempering of the ductile iron casting. Hot isostatic pressing can be carried out at a pressure in the range of 10,000 to 17,000 psi at a temperat...	06/04/1996
5370751	Hot rolled and air hardened steel for manufacturing structural tubes and method thereof An air hardening steel which is killed during casting used as material for manufacturing structural tubes for structural elements which are subjected to high mechanical loads, particularly for door reinforcements in the manufacture of automobiles. The ste...	12/06/1994
5250125	Process for grain refinement of aluminium casting alloys, in particular aluminium/silicon casting alloys For the grain refinement of aluminum casting alloys, in particular aluminum/silicon casting alloys, gallium phosphide and/or indium phosphide are/is added to the melt, optionally in addition to further grain-refinement and/or modification additions. The a...	10/05/1993
5154781	Method to make casting alloy golf clubs This invention relates to a duplex stainless steel alloy useful in the manufacture of noncorrosive golf club irons and metal woods. A golf club made with this new alloy has improved corrosion resistance, appropriate hardness for the intended use, superior...	10/13/1992
5085712	Iron/copper/chromium alloy material for high-strength lead frame or pin grid array An iron/copper/chromium alloy material for a high-strength lead frame or pin grid array, which comprises 20 to 90% by weight of Cu and 2.5 to 12% by weight of Cr, with the balance being mainly iron, and which has an average grain size number of at least 1...	02/04/1992
4969957	Method of producing a mechanical component with superior fatigue strength A method of producing a mechanical component with superior fatigue strength comprises the steps of casting melted ferrous alloy which includes carbon within the range of 0.3% to 0.45% by weight, silicon within the range of 1.3% to 2.0% by weight, chromium...	11/13/1990
4957703	Precipitation-hardenable nickel-base superalloy with improved mechanical properties in the temperature range from 600 to 750 degrees celsius A precipitation-hardenable nickel-base superalloy with improved mechanical properties in the temperature range from 600° to 750° C. which has the following composition: Cr=12-15 percent by weight Co=3-4.5 percent by weight W=1-3.5 percent by weight Ta=4-5.5 ...	09/18/1990
4867804	Manufacturing process of toughened bainitic nodular graphite cast iron Taking the fracture initiation point of a nodular graphite cast iron into consideration, a manufacturing method of bainitic nodular graphite cast iron whose mechanical property is superior by far to the same cast iron obtained by the prior art is provided...	09/19/1989
4770721	Process of treating steel for a vehicle suspension spring to improve sag-resistance A spring steel having a good sag-resistance comprises by weight 0.5-0.8% carbon, 0.5-1.4% silicon, 0.5-1.5% manganese and a member or members selected from a group consisting of 0.05-0.5% vanadium, 0.05-0.5% niobium and 0.05-0.5% molybdenum, the remainder...	09/13/1988
4711675	Process for improving the sag-resistance and hardenability of a spring steel A spring steel having a good sag-resistance and a good hardenability comprises by weight 0.5-0.8% carbon, 1.5-2.5% silicon, 1.6-2.5% manganese and a member or members selected from a group consisting of 0.05-0.5% vanadium, 0.05-0.5 niobium and 0.05-0.5% m...	12/08/1987
4610734	Process for manufacturing corrosion resistant chromium steel The corrosion resistant chromium steel which includes 3 to 45% chromium, 0.2 to 5% nitrogen and other elements. Its structure contains at least 50% ferromagnetic structure components. It is directly magnetizable and, at 400° C., has a yield strength of R...	09/09/1986
4572747	Method of producing boron alloy A process for making a boron alloy from a ferrous or non-ferrous melt by adding a boron compound to the melt and reducing the compound within the melt by a reductant, such as aluminum, silicon or carbon, such that the boron can alloy with the melt. A boro...	02/25/1986
4374680	Corrosion-resistant weldable martensitic stainless steel, process for the manufacture thereof and articles A corrosion-resistant weldable martensitic steel essentially consists of carbon 0.06 to 0.10 weight percent, chromium 15.1 to 16.5 weight percent, nickel 3.5 to 4.45 weight percent, silicon 0.10 to 0.60 weight percent, manganese 0.20 to 0.50 weight percen...	02/22/1983
4344801	Heavy thick high-strength casting having improved weldability and impact properties A heavy thick steel casting having high mechanical strength with a tensile strength of 80 kg/mm2 or more, excellent impact properties with a vEO value of more than 8 kg-m/cm2 and improved weldability, and also a method of ...	08/17/1982
4218268	High corrosion resistant and high strength medium Cr and low Ni stainless cast steel A high corrosion resistant and high strength medium Cr and low Ni stainless cast steel which is produced from material including predetermined amounts of elements at predetermined weight percentage and remaining portion substantially of Fe. When the above...	08/19/1980
4217150	Corrosion resistant austenitic steel A substantially non-porous, sulfuric acid resistant austenitic stainless steel and a method for making it are disclosed. The steel includes from 15-45% manganese, from 10-30% chromium, from 1-3% copper, from 0.85-3% nitrogen, from 0-2% silicon, from 0-1% ...	08/12/1980
4207097	Lead alloy for lead-acid batteries and process for producing the alloy An alloy consisting predominantly of lead and containing 0.1 to 3.0% by weight of tin, 0.1 to 0.3% by weight of arsenic and 0.01 to 0.1% by weight of aluminum or copper. The alloy may further contain 0.002 to 1.0% by weight of cadmium. The alloy is useful...	06/10/1980
4087287	Method for providing ferritic-iron-based alloys A strengthened creep resistant ferritic iron alloy is provided by alloying the iron with two or more alloying metals of the type that form an intermediate Laves phase in the alloy having the composition Fe2 X, where X is the alloying metal. One...	05/02/1978
4023985	Steel abrasives and method for producing same Disclosed is a method of producing a versatile as-cast steel shot having a substantially fully martensitic structure and corresponding full hardness which permits eliminating intermediate steps of heat treating to harden and subsequent drying in producing...	05/17/1977
3971677	Low expansion alloys Low expansion alloys consisting essentially of Ni-Fe-Ti and optionally containing Co and/or Nb are provided which in the as-cast, age hardened condition have a thermal expansion coefficient between 20° and 300°C of less than 6 × 10.sup.-6 /�...	07/27/1976
3966511	Process for the manufacture of anti-abradant elements A method for reducing abrasion between interacting moving parts which comprises applying an anti-abradant element between said moving parts which anti-bradant element will increase in dimensional proportions upon exposure to oxidation, sulphation, nitrati...	06/29/1976

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Class 148/548 - With tempering, ageing, solution treating (i.e., for hardening), precipitation hardening or strengthening, or quenching