Powder molding press method of green compact for cutting insert, and powder molding press device

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United States of America Patent

PATENT NO 11666966
APP PUB NO 20200188997A1
SERIAL NO

16617746

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Abstract

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A powder molding press method of a green compact for a cutting insert including: filling a molding space with raw material powder in a state where a lower punch is inserted from below into a hole portion of a die; performing preliminary molding by inserting an upper punch for preliminary molding including a preliminary molding surface having a shape different from a shape obtained by inverting the upper surface of the green compact for a cutting insert in a plane symmetry into the molding space from above such that a thick portion between the upper and lower surfaces in the direction of the insert center line is filled with more raw material powder than a thin portion therebetween, relative to a state before the step of performing the preliminary molding; and inserting an upper punch for final molding into the molding space from above to powder-molding-press the raw material powder.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI MATERIALS CORPORATIONTOKYO 100-8117

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gouda, Tomotsugu Tokyo, JP 1 1
Hotta, Masaru Tokyo, JP 2 2
Ohno, Kentaro Tokyo, JP 2 1
Shibuya, Yoshitomo Tokyo, JP 2 1

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