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| Number | Title | Issue Date |
| 8070885 | Quenching fluid Quenching fluid composition comprising one or more additives and a saturated base oil having a kinematic viscosity at 100° C. “K” expressed in centistokes and a viscosity index “I” wherein I is greater than 120 and K greater than 2 cSt. ... | 12/06/2011 |
| 7993473 | Heat treatment oil composition The heat-treating oil composition of the present invention is characterized by comprising a mixed base oil containing a low-boiling base oil having a 5% distillation temperature of from 300 to 400° C. in an amount of not less than 5% by mass but less than 50% by ma... | 08/09/2011 |
| 7358217 | Quenching oil compositions Quenching oil compositions comprising (1) an oil having kinematic viscosity (ASTM Test Method D-445) at 40° C. ranging from about 4 to about 45 mm2sec−1 (about 40 to about 210 Saybolt Universal Seconds (SUS)) and having a saturated content from about 80% to about... | 04/15/2008 |
| 7347927 | Oil composition for heat treatment A heat treatment oil composition comprising a mixed base oil containing 50-95 weight % of (A) a low viscosity base oil with kinematic viscosity of 5-60 mm2/s at 40° C., and 50-5 weight % of (B) a high viscosity base oil with kinematic viscosity of more t... | 03/25/2008 |
| 7011139 | Method of continuous casting non-oriented electrical steel strip Non-oriented electrical steels are widely used as the magnetic core material in a variety of electrical machinery and devices, particularly in motors where low core loss and high magnetic permeability in all directions of the strip are desired. A method for producin... | 03/14/2006 |
| 6815401 | Oil composition for heat treatment of a gear and gear treated by using the oil composition An oil composition for heat treatment of a gear which comprises mineral oil having a kinematic viscosity of 5 to 40 mm2/second at 100° C. as a base oil and, based on a total amount of the composition, 0.01 to 5% by weight of (a) a phosphoric acid ester c... | 11/09/2004 |
| 6239082 | Petroleum quench oil Petroleum quench oils effective for high speed cooling of heated metals and metal hardening are disclosed. The petroleum quench oils contain natural or synthetic base oils having a minimum flash point of about 120° C. and a combination of poly(iso)alkyle... | 05/29/2001 |
| 5376186 | Heat treating oil composition Disclosed is a heat treating oil composition which comprises a base oil adjusted to have a total sulfur content of 3 to 1000 ppm comprising (A) at least one base oil selected from a mineral oil and a synthetic oil each having a sulfur content of not more ... | 12/27/1994 |
| 5250122 | Heat treating oil composition There is disclosed a heat treating oil composition which comprises (A) at least one base oil selected from a mineral oil and a synthetic oil each having a sulfur content of not more than 300 ppm and (B) at least one member selected from alkaline earth met... | 10/05/1993 |
| 4948675 | Separating-agent coatings on silicon steel By adding an appropriate amount, 1 to 12 weight percent, based on the amount of magnesium oxide present and Loss On Ignition values of powdered magnesium metal to the magnesium oxide aqueous slurry composition used to make a separating-agent composition i... | 08/14/1990 |
| 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 |
| 4781769 | Separating-agent composition and method using same By adding an appropriate amount, 1 to 12 weight percent, based on the amount of magnesium oxide present and Loss On Ignition values of powdered magnesium metal to the magnesium oxide aqueous slurry composition used to make a separating agent composition i... | 11/01/1988 |
| 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 |
| 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 |
| 4591397 | Non-cyanide salt bath and process for carburization of ferrous metals and alloys A non-cyanide molten salt bath composition and process for the carburization of objects made of ferrous metals or alloys are provided. The composition comprises a molten salt mixture, at a temperature in the range of 900° C. to 1050° C., of an alkali me... | 05/27/1986 |
| 4465523 | Method of quenching metals A method of quenching metals is described, comprising immersing said metals in a quenching oil composition comprising: (a) a base oil, and (b) a compound represented by the general formula (1) or (2) as described below. ##STR1## (wherein all the symb... | 08/14/1984 |
| 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 |
| 4214924 | Method of improving surface characteristic of heat-treated metal The invention provides a method for reducing the incidence of thermal decomposition products of metal-treating compositions on the surface of metal heat-treated in the presence of such compositions. The compositions are modified with certain acetylenic al... | 07/29/1980 |
| 4153481 | Cyanide-free carburizing process and composition A cyanide-free molten salt carburizing process and composition comprising an alkali metal salt bath having a cover of finely divided graphite particles in a size range of about 100 mesh to about 300 mesh. The bath is operated in the temperature range of a... | 05/08/1979 |
| 4077814 | Method for thermally treating metal components A method for thermally treating metal components. The metal components which are in a partially finished condition are annealed by being placed within a liquid bath which is at a temperature between 200° and 300° C. The liquid bath is a mineral oil and ... | 03/07/1978 |
