Abstract:
PROBLEM TO BE SOLVED: To provide a lubricating grease composition that can be supplied by an automatic grease supply device that is attached to a machine tool and is capable of suppressing the occurrence of stick-slip in a sliding surface lubrication part of the machine tool.SOLUTION: This invention relates to a lubricating grease composition for a machine tool equipped with the automatic grease supply device, which contains a base oil having a kinematic viscosity at 40°C of 10-200 mm/s and 0.1-10 mass% of a solid powder that is not soluble in the base oil, and which has a mixing consistency of 400-500.
Abstract:
PROBLEM TO BE SOLVED: To provide a cold-rolled steel sheet having an excellent mold-galling property even if used as a hard-to-mold material such as a high-strength steel sheet the surface pressure of which is increased when press-molded.SOLUTION: The surface of the cold-rolled steel sheet has an organic/inorganic composite film containing an organic resin and a crystalline layered substance. The organic/inorganic composite film has a 0.10-2.0 μm average thickness and contains a ≥0.5 parts weight solid content of the crystalline layered substance based on a 100 parts weight solid content of the organic resin. The crystalline layered substance is, for example, a layered double hydroxide shown by [MM(OH)][A]-zHO (where Mis preferably one or two or more of Mg, Ca, Fe, Niand Zn; Mis preferably one or two or more of Al, Feand Cr; Ais preferably one or two or more of OH, CO, Cland (SO)).
Abstract:
A resin composition which exhibits good sealability while keeping creep deformation to a minimum when brought into sliding contact with a mating member at a high contact pressure of over 10 MPa, and which will not damage a mating member made from an aluminum alloy while sliding in contact with lubricating oil. The resin composition is a pressure-resistant, sliding tetrafluoroethylene resin composition containing 100 parts by volume of a modified tetrafluoroethylene resin in the form of a copolymer of tetrafluoroethylene and partially modified tetrafluoroethylene, 5-40 parts by volume of carbon fiber, and 2-30 parts by volume of calcium sulfate whiskers having a Mohs hardness of 4 or less, and having, at 100° C., a maximum deformation rate in 24 hours, of 15% or less. A seal device to be brought into slide contact with an aluminum metal is molded from such a pressure-resistant, sliding tetrafluoroethylene resin composition.
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:
PROBLEM TO BE SOLVED: To provide a heat-resistant, high speed, and high-loaded rolling bearing, which is used for accessory units or electrically-powered components, having non abnormal flaking phenomena, sufficiently long life, and superior durability under high temperature, high speed, and high loading operating conditions. SOLUTION: Grease composition, in which diurea compound showed in the following chemical expression 5 is combined as a thickener and a passive agent such as sodium nitrite is also added at 0.1 to 5 wt.% in base oil mixed alkyl diphenyl ether oil and aromatic ether oil with 20 to 150 mm 2 /s of dynamic viscosity at 40°C in a range from 50:50 to 80:20 (weight ratio) and is filled in the heat-resistant, high speed, and high-loaded rolling bearing. (where, R 2 shows an aromatic hydrocarbon group having 6 to 15C, R 1 and R 3 show an aromatic hydrocarbon group having 6 to 12C, or an cycloalkane family hydrocarbon group having 6 to 20C, a rate of aromatic hydrocarbon of R 1 and R 3 occupied in a full amount are 1/2 or more in a mole ratio, and R 1 and R 3 may be the same or different. COPYRIGHT: (C)2003,JPO