Title:
METHOD FOR FORMING COMPACT FROM POWDER AND MOLD APPARATUS FOR POWDER FORMING
Document Type and Number:
WIPO Patent Application WO2004045841
Kind Code:
A8
Abstract:
A method for forming a compact from a powder wherein a forming portion (1A) formed in a mold body (2) is filled with a raw material powder and upper and lower punches (3, 4) are inserted into the forming portion (1A), to thereby form the compact, characterized in that before the portion is filled with the raw material powder (M), a uniform solution (L) of a lubricant in a solvent is attached to the peripheral surface of the forming portion (1A) and then the solution (L) is subjected to evaporation, to thereby form crystals on the surface of the forming portion (1A) and provide a crystallized layer (B). The layer (B) is a coating film of the lubricant closely formed on the peripheral surface of the forming portion (1A) and allows the reduction of the force required for drawing a powder compact (A) out of the forming portion (1A) and the enhancement of the density of the compact (A) from a powder, which results in the achievement of the continuous and stable production of a compact from a powder having an enhanced density.
Inventors:
NAKAI TAKASHI (JP)
KAWASE KINYA (JP)
KAWASE KINYA (JP)
Application Number:
PCT/JP2003/014643
Publication Date:
June 23, 2005
Filing Date:
November 18, 2003
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
NAKAI TAKASHI (JP)
KAWASE KINYA (JP)
NAKAI TAKASHI (JP)
KAWASE KINYA (JP)
International Classes:
B30B11/00; B22F3/02; B22F3/035; B30B15/00; (IPC1-7): B30B11/00; B22F3/035
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