Abstract:
PROBLEM TO BE SOLVED: To provide an electrical contact material which has wear resistance under a relatively high load of about 1 N or more, and is superior in sliding characteristics and superior in heat resistance, and moreover has corrosion resistance; and to provide a method for manufacturing the electrical contact material having such characteristics, and an electrical contact using the electrical contact material. SOLUTION: The electrical contact material includes: a surface layer consisting of a noble metal or an alloy 1 mainly containing the noble metal; a first organic coating film layer 4 consisting of either of a fatty amine or mercaptan, or the mixture of both provided on the surface of the surface layer; and a heat-resistant second organic coating film 2 formed from an organic compound having an ether linkage group and provided on the surface of the first organic coating film layer, and is excellent in corrosion resistance and sliding characteristics. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
Waterborne lubricants comprising: (A) water-soluble inorganic salt; (B) homogeneously dispersed solid lubricant; (C) at least one homogeneously emulsified substance selected from mineral oils, animal and plant oils and fats, and synthetic oils; (D) surfactant; and (E) water, in which the weight ratio (B)/(A) is from 0.05:1 to 2:1 and the weight ratio {C/(A + B)} is from 0.05:1 to 1:1, provide a one-step, highly lubricating waterborne lubricant for use in the cold plastic working of metals. This waterborne lubricant can replace the conversion coating treatment (phosphate, oxalate, etc.) + reactive soap treatment combined lubrication system now in general use and is free of the environmental issues associated with the combined lubrication system, provides for facile coating removal, and is not subject to the decline in seizure resistance caused by nonuniform add-on when large numbers of workpieces are treated together by immersion.
Abstract:
In order to provide a tubular threaded joint constituted by a pin and a box each having threads and an unthreaded metal contact portion with excellent galling resistance and gas tightness even in extremely cold environments at -60° C. to -20° C. and rust preventing properties without using a compound grease, a thermoplastic solid lubricating coating containing low friction copolymer particles made from an acrylic-silicone copolymer and preferably further containing a solid lubricant (e.g., graphite) in a thermoplastic polymer matrix (e.g., selected from polyolefin resins and ethylene-vinyl acetate copolymer resins) is formed on the surface of the threads and unthreaded metal contact portion of a pin and/or a box.
Abstract:
A manufacturing method for providing a low-friction surface comprises providing (210) of a mechanical element. A tool is mechanically rubbed (212) against a surface of the mechanical element. A process liquid is provided (214) to a contact area between the mechanical element and the tool. The process liquid comprises a first element that is a refractory metal and a second element that is a chalcogen. The first and second elements are provided in a liquid substance. The mechanical rubbing is performed with a contact pressure that is between 1% and 100% of an ultimate strength of the mechanical element. The mechanical rubbing thereby causes a combined burnishing of the surface of the mechanical element and a deposition of a tribofilm on the surface of the mechanical element. The tribofilm comprises the first element and the second element.
Abstract:
PROBLEM TO BE SOLVED: To provide a grease composition which has excellent conductivity in comparison with a conventional grease composition and can rapidly remove static electricity generated by use of a bearing.SOLUTION: The grease composition includes a base oil, a thickener, and a tungsten disulfide powder with the average particle diameter of 0.5-5.0 μm. A content of the tungsten disulfide powder is 2.0-4.0 pts.mass based on 100 pts.mass of the total content of the base oil and the thickener.