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METHOD FOR PRODUCING GREEN COMPACT, GREEN COMPACT, METHOD FOR PRODUCING SINTERED COMPACT, AND OIL IMPREGNATED SINTERED BEARING
METHOD FOR PRODUCING GREEN COMPACT, GREEN COMPACT, METHOD FOR PRODUCING SINTERED COMPACT, AND OIL IMPREGNATED SINTERED BEARING
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机译:压坯的制造方法,压坯,烧结体的制造方法以及含油烧结轴承
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摘要
PROBLEM TO BE SOLVED: To provide a method for producing a green compact capable of obtaining a green compact having excellent mechanical strength, capable of improving releasability of the green compact from a die and capable of remarkably reducing a load on the die, to provide a method for producing the green compact, to provide the green compact obtainable by using the method for producing the green compact, to provide a method for producing a sintered compact, and to provide an oil impregnated sintered bearing.;SOLUTION: The method for producing a green compact comprises: a stage 1 where raw material powder containing a metallic material, a polyvinyl acetal resin and zinc stearate is prepared; and a stage 2 where the raw material powder is subjected to pressure molding. The polyvinyl acetal resin as an additive having a role of a hole making agent is composed of particles in which the average particle size measured using a particle size distribution meter is ≤100 μm, and also, the ratio of the particles which do not pass through a sieve of 100 meshes is ≤10 wt.%.;COPYRIGHT: (C)2009,JPO&INPIT
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