Abstract:
A combination of sulfur-free azoles, preferably benzotriazole and tolyltriazole, with sulfur-containing azoles, preferably 2-mercaptobenzothiazole or mercaptobenzimidazole, prevents discoloration, staining, or corrosion of metal surfaces being coated with an organic protective coating from aqueous dispersion or solution.
Abstract:
The invention relates to a sintered friction material for the production of friction-linked components, in particular synchronising rings, and a friction-linked component, especially a synchronising ring, with such a sintered friction material. To obatin a good friction gradient, the proposal is for a sintered friction material containing an iron-based matrix and a solid lubricant which contains 0.5 to 10 wt % of molybdenum in relation to the matrix and 20 to 50 vol % of graphite as the solid lubricant. The friction-linked component, especially a synchronising ring, has a support and a friction coating of the friction material described above, while in an embodiment of the invention, trapezoidal grooves are made on the friction surface.
Abstract:
A lubricant to be sprayed onto the surface of a steel material for forming a lubricant coat on the surface of the steel material to be forged. The lubricant comprises a particulate lubricant composed of thermally melting resin mixed with inorganic lubricant. The particulate lubricant is applied onto the surface of a steel material to be forged. Before or after applying the particulate lubricant onto the surface of the steel material, the surface of the steel material is heated. Consequently, the thermally melting resin melts and coheres with the inorganic lubricant over the surface of the steel material, resulting in the formation of a uniformly thick lubricant coat over the steel material. The lubricant coat prevents the steel material from being burnt in a forging device even during hot forging. The lubricant coat is fit for the forging of hard to work steel material. The lubricant coat also contributes to the decrease in forging cost, without deteriorating the forging environment.
Abstract:
The title lubricant composition comprises a base oil or base grease and a specified amount of a heat insulating agent comprising (A) an inorganic compound undergoing endothermic melting at temperatures of 1200 DEG C or below and (B) an inorganic powder which neither melts nor decomposes at temperatures of 1200 DEG C or below and which has a thermal conductivity of 0.01 cal/cm.s. DEG C or less and a friction coefficient of 0.7 or less at room temperature added alone or as a combination. This lubricant composition has an excellent heat-insulating effect and is effective in preventing occurrence of thermal crown of working rolls.
Abstract:
The slider consists of an injection molded product or polyethylene having a viscosity average molecular weight of 500,000-6,000,000. Slider has a low coefft. of friction and both excellent abrasion resisting characteristics and excellent characteristics of preventing another material from being worn out. @(81pp Dwg.No.0/11).
Abstract:
Carbon fluoride particles wherein the number-average particle diameter is 0.01-50 µm, the content of particles having such diameters that the particle size distribution thereof falls within the range from the number-average particle diameter minus 20 % to the number-average particle diameter plus 20 % amounts to at least 50 % of the whole, the true specific gravity is 1.7 to 2.5, the F to C ratio of the particle as a whole is 0.001 to 0.5, and the F to C ratio at the surface of the particle is invariably greater than that of the particle as a whole and is 0.1 to 2.0. The carton fluoride particles can be produced by the reaction of carbon particles with fluorine at 350-600 °C for 1 minute to 6 hours. The obtained particles have excellent dispersibility and powder fluidity and are used as such or in the form of composite material as water- and oil-repellent, detackifying agent, solid lubricant, conductivity improver, additive for electrostatic development toner, additive for resinous coating layer of electrostatic development carrier, composite material for fixing roller, phosphate-type fuel cell, air/zinc battery and nickel/hydrogen storage battery.
Abstract:
A carrier-free pulverulent metalworking lubricant composition. In one form, the composition contains from 2 to 30% by weight sulfur and at least one component having adhesive properties at forging temperatures, the composition being formed by a method comprising the steps of: (a) forming a dry mixture of said particulate lubricant components, and (b) agglomerating said admixture to form agglomerated particles. The application of the composition as a metal working lubricant significantly reduces smoke and oily waste generation in hot forging operations by eliminating the use of oils or volatile organic compounds as carriers, while providing acceptable performance, cleanability and sprayability.
Abstract:
Disclosed is a lubricating oil for compression-type refrigerators comprising, as a main component, a polyoxyalkylene glycol derivative which has at least one constitutional unit represented by the general formula: wherein R to R are as defined in the specification. Said lubricating oil for compression-type refrigerators has good miscibility with refrigerants including R-134a.
Abstract:
A lubricant composition comprises at least 0.1 % by weight of substantially spherical particles of a hard, abrasion-resistant and fracture-resistant, thermally stable and chemically inert material, and up to 99.9 % by weight of a supporting vehicle. The particles are preferably of silica-alumina ceramic material, and preferably have an average diameter of less than 250 νm. Lubricants are suitable for most applications, but are especially useful for conditions of high temperature and pressure.
Abstract:
The present invention relates to a lubricating oil composition comprising: (A) a mineral oil having a kinematic viscosity at 100 DEG C of 1 to 50 centistokes and a viscosity index of at least 60, (B) 0.5 to 20% by weight based on the total weight of the composition of an ethylene- alpha -olefin copolymer having a number average molecular weight of 800 (inclusive) to 5,000 (exclusive), (C) 0.05 to 20% by weight based on the total weight of the composition of polymethacrylate having a number average molecular weight of 10,000 to 250,000 or a mixture of said polymethacrylate and an olefin copolymer, and (D-I) 1 to 20% by weight based on the total weight of the composition of a detergent-dispersant and/or an antioxidant, or (D-II) 0.5 to 20% by weight based on the total weight of the composition of at least one member selected from the group consisting of a extreme pressure agent, an anti-wear agent and an oiliness agent. According to the present invention, a multi grade lubricating oil composition which is excellent in shear stability can be obtained.