Method for forming compact from powder and mold apparatus for powder forming
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United States of America Patent
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Issued Date -
Feb 2, 2006
app pub date -
Nov 18, 2003
filing date -
Nov 21, 2002
priority date (Note) -
Abandoned
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Abstract
A method for forming a compact from a powder wherein a forming portion 1A in a mold body 2 is filled with a raw powder and upper and lower punches 3,4 are fitted into the forming portion 1A to form the compact. Prior to filling the forming portion 1A with the raw powder M, a solution L with a lubricant being uniformly dissolved in a solvent is applied to a peripheral portion of the forming portion 1A, and then the solution is evaporated, thus forming a crystallized layer B thereon. Thus, the reduction of a force for ejecting the compact is realized, while improving the density of the compact, realizing the stable and successive production of the compact
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