METHOD OF MANUFACTURING SINTERED COMPONENT

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method for molding a favorable molding in manufacturing a minute sintered component by pressure molding a plastic raw material within a die cavity and sintering the obtained molding.

SOLUTION: The method of manufacturing the sintered component includes: charging the raw material prepared by adding 40-60 vol.% of a binder consisting of a thermoplastic resin and wax to a metal powder and kneading it with heat into the die cavity of a die to pressure mold it to a desired shape; pulling successively out the pressed molding from the die; removing the binder with heat; and then sintering the molding with heat. In the method, the moving speed U of a punch in pressure molding is set lower than a speed obtained by [U=ΔP/(32μ×L)×De2] with ΔP: a punch pressing force (Pa), μ: a viscosity (Pa s), L: a length (m), and De: an equivalent pipe diameter (m).

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