Class 148/638 - Treating composition contains water

Subclass of Class 148 - Metal treatment
Definition: Process under 637 wherein the treating agent composition
No. of patents: 35
Last issue date: 11/13/2007

Number	Title	Issue Date
7294215	Method and device for cooling steel sheet The present invention relates to a method for cooling a steel plate comprising the steps of: forming a water pool with jets of cooling water being injected to impinge on one another by using one slit-nozzle and a plurality of induced laminar flow nozzles, the slit n...	11/13/2007
7220327	Kick-down drum material and method of manufacturing the same Disclosed is a material of a kick-down drum comprising fine ferrite and microdispersion spheroidized cementite for an automobile also disclosed is a method for manufacturing the kick-down drum material. The kick-down drum of this invention can greatly improve harden...	05/22/2007
6821364	Method of making a multiphase hot-rolled steel strip The invention concerns a method for making a multiphase hot-rolled steel strip comprising an ultra-fast cooling operations, which consists in carrying out said ultra-fast cooling operation after controlled slow cooling of the strip on a conventional slow cooling tab...	11/23/2004
6689227	Eco-friendly starch quenchants This invention relates to application of eco-friendly starch solution as a quenching medium for heated metal parts fabricated from steel, alloy steel, aluminum and aluminum alloys. Depending on the material grade, critical temperature and desired cooling ...	02/10/2004
6648997	Quenching method Objects formed of engineering and tool steels are quenched from above 850° C. by immersion in an aqueous suspension of inorganic particles. The greater the proportion of particles, the slower the quench. The suspension may be saturated with carbon dioxid...	11/18/2003
6471798	Method and apparatus for heat treating steel A method for heat-treating steel, which method uses a coolant having a large coefficient of heat transfer and which method treats the steel at low cost and in an environment-friendly manner (no pollution), and an apparatus for the method. The heat-treatme...	10/29/2002
6364974	Quenching apparatus and method for hardening steel parts A quenching apparatus and a method for hardening steel parts is disclosed. The method optimizes cooling conditions preventing the occurrence of film boiling and the "self-regulated thermal process" while optimizing the depth of the hardened layer and prov...	04/02/2002
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
5759309	Thermal process for selectively hardening track chain links A process for selectively hardening a forged track chain link has the following steps. A forged track chain link having a pad portion, a rail portion, a first side portion and a second side portion, is provided. A quench tank is provided and adapted for s...	06/02/1998
5681407	Method of heat treating metal with liquid coolant containing dissolved gas A method of quenching a metal object comprising: (a) providing a reservoir of liquid coolant containing gas that has been dissolved therein; and (b) immersing the metal object in the reservoir to quench the metal. The gas is selected from the group consis...	10/28/1997
5605587	Apparatus for magnetic conditioning of liquids and methods of making same Martensitic steel components of apparatus for magnetic conditioning of liquids which are subjected to cathodic reaction and degradation are treated prior to use to form a barrier of iron-chromium oxide and a uniform level of hardness throughout by heating...	02/25/1997
5458704	Process for the production of thick armour plates The invention relates to a process for the production of very hard armour plates from steel slabs, wherein the slabs are hot rolled to a final thickness above 50 mm and then hardened and possibly tempered. The characterizing feature of the invention is th...	10/17/1995
5334269	Interrupted normalization heat treatment process An interrupted normalize heat treatment process for ferritic alloy steel that includes the steps of rapidly cooling at least the outer surfaces of the steel from a temperature above the Ac temperature to a temperature below the Ar, temperature and during ...	08/02/1994
5174836	Interrupted normalization heat treatment process An interrupted normalization heat treatment process for ferritic alloy steel that includes the steps of rapidly cooling at least the outer surfaces of the steel from a temperature above the Ac3, temperature to a temperature below the Ar1	12/29/1992
4931108	Method of heat treatment of rolled steel material using foams impregnated with water soluble polymers The present invention provides a method for cooling a rolled steel material, especially a wire rod, which comprises immersing a hot-rolled steel material in foams obtained by adding a blowing agent to water, which foams have a water content of 0.01 to 80 ...	06/05/1990
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
4826545	Method of heat treating metal parts using a washable synthetic quenchant A method of quenching metal components utilizing a water based quenching composition which includes a polyvinylpyrrolidone polymer of high molecular weight and in relatively high concentrations and thereafter power washing the parts to remove the polymeri...	05/02/1989
4738731	Method of heat treating metal using a washable synthetic quenchant A method of quenching metal components utilizing a water based quenching composition which includes a polyvinylpyrrolidone polymer of high molecular weight and in relatively high concentrations and thereafter power washing the parts to remove the polymeri...	04/19/1988
4625532	Manufacturing steel concrete reinforcements on a high speed rod rolling mill Steel concrete-reinforcing rod is manufactured on a high speed rod rolling ill including a finisher followed by a cooling device for superficial quenching. The traction applied to the product leaving the finisher and approaching the cooling device is arran...	12/02/1986
4596612	Method of quenching metals A metal quenchant fluid which is a mixture of water and a polyalkylene glycol and a inhibitor is substantially nitrite free. The inhibitor is a soluble product obtained by mixing a carboxylic acid having 4 to 12 carbon atoms in the molecule, an amine such...	06/24/1986
4595425	Corrosion inhibiting quenchant compositions An organic polymer containing composition suitable for use as a quenchant having incorporated therein a non-nitrite inhibitor system, which comprises an aromatic compound having at least one substituent nitro group and/or the water soluble organic or inor...	06/17/1986
4589933	Method of quenching hot strip mill product A method of improving the quenched metallurgical qualities of a hot strip mill product quenched with recycled industrial water. The improvement is achieved by coating the throat plates of the quenching station with an oil and grease repellant compound to ...	05/20/1986
4584033	Method of quenching A method of quenching which comprises the steps of (a) immersing a metal heated to an elevated temperature in a quenchant composition comprising an aqueous-solution of a sufficiently hydrophilic water-soluble or water-dispersible organic polymer of the fo...	04/22/1986
4561911	Aqueous solution for cooling cold-rolled steel strip in a continuous annealing process Cooling water containing an ଱-amino acid suitable for cooling steel strips during their continuous annealing and after their overageing treatment. As the ଱-amino acid, aliphatic amino acids, aromatic amino acids, heterocyclic amino acids and t...	12/31/1985
4528044	Aqueous quenchants containing polyoxazolines and n-vinyl heterocyclic polymers and their use in quenching steel A process for quenching metals, particularly steel, using as the quenching bath an aqueous composition containing (a) a substituted oxazoline polymer and (b) an N-vinyl heterocyclic polymer or copolymer in which the heterocyclic group is composed of carbo...	07/09/1985
4486246	Polyoxazolines in aqueous quenchants Metal, such as steel, is quenched in a quenching bath comprising an aqueous solution of a substituted oxazoline polymer, one example of which is polyethyloxazoline having a molecular weight of 50,000 to 500,000. The bath is capable of providing quenching ...	12/04/1984
4441937	Quenching bath and quenching method for metals Bath for the quenching of ferrous and nonferrous metals and their alloys, comprising a hydrogenated starch hydrolysate having, expressed with respect to the dry matter, a percentage of products of degree of polymerization 1 and 2 comprised between 1 and 9...	04/10/1984
4404044	Method of quenching Aqueous quenching baths containing as an essential constituent a water-soluble salt of a copolymer of maleic, citraconic, or itaconic anhydride and a long chain alpha olefin are useful in quenching metal at cooling rates which are slower than that of wate...	09/13/1983
4381205	Metal quenching process A process of quenching metal using as the quenching medium an aqueous solution containing from about 0.5% to 50% by weight of a liquid, water-soluble, capped polyether polyol obtained by reacting ethylene oxide and at least one lower alkylene oxide having...	04/26/1983
4349393	Continuous heat treatment for metal sheet Metal sheet (cold-rolled steel sheet) contaminated with rolling oil is heated at a temperature higher than its recrystallization temperature in a naked flame furnace, e.g. of the incomplete combustion type. The heated sheet is then rapidly cooled by conta...	09/14/1982
4251292	Method for restoring molecular weight distribution of a polymeric quenchant The subject invention provides a method and apparatus for the control and or rectification of molecular weight distribution of polymeric quenchants. In general this is accomplished by selective filtration and elimination of lower molecular weight constitu...	02/17/1981
4231812	Surface treatment of metal strip Metal strip, particularly steel strip, is heated to above 250° C. and quenched in a phosphating bath, at 80° C. or more, containing one or more phosphates of the type Me (H2 PO4)n, where Me=Zn, Ni, Mn, or an alkali metal...	11/04/1980
4087290	Process for the controlled cooling of ferrous metal Austenitized ferrous metal, such as carbon steel, is quenched by means of an aqueous solution of a salt of polyacrylic acid which develops an extremely stable and uniform water vapor envelope surrounding the steel. Rate of cooling is controlled by (1) the...	05/02/1978
4065329	Continuous heat treatment of cold rolled steel strip Cold-rolled steel strip is heated to a temperature higher than its recrystallization temperature, preferably faster than 4° C/s. The strip is then held for more than 30 seconds. The strip is then cooled by immersion in an aqueous bath maintained at subst...	12/27/1977
3996076	Process for quench hardening with polyacrylate quenching medium A process for quench hardening metal is provided. The process comprises heating the metal to a quench hardening temperature and thereafter immersing the metal in a quenching medium which is an aqueous solution containing 0.4 to 10% by weight of polyacryli...	12/07/1976

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Class 148/638 - Treating composition contains water