Method of producing powder sintered product
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United States of America Patent
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Aug 5, 2014
Grant Date -
Jul 3, 2008
app pub date -
Nov 14, 2005
filing date -
Dec 21, 2004
priority date (Note) -
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Abstract
A sinter of stable quality is produced by molding a powder for powder metallurgy. This process includes successively conducting the following steps: charging a powder and a solid lubricant into a mold compact formation in which the powder charged into the mold is compacted; releasing the compact from the mold; and the powder for powder metallurgy is charged again into the mold after the release step. The temperature of the mold is set at a value in the range of from the boiling point of water to the melting point of the solid lubricant. The compact can be continuously formed without causing, e.g., a failure in the feeding of the powder for powder metallurgy. The sinter obtained by sintering the compact is almost even in strength and density.
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