Powder compacting method and powder compacting system

This invention has been realized in order to obtain green compacts of a fixed height by pressure molding of material powder with a fixed gap between upper and lower punches. A powder compacting method of this invention performs a punch driving step wherein, after filling material powder in a cavity,...

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Bibliographic Details
Main Authors YANO KATSUHIKO, SASAKI MASAO, HANABUSA AKIHITO, YAMADA HEIJI, MATSUI MASAKI, SASAGAWA KATSUMI, KOBAYASHI MASARU, SATO HIDEO
Format Patent
LanguageEnglish
Published 03.08.2005
Edition7
Subjects
PERFORMING OPERATIONS
PRESSES
PRESSES IN GENERAL
TRANSPORTING
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Summary:This invention has been realized in order to obtain green compacts of a fixed height by pressure molding of material powder with a fixed gap between upper and lower punches. A powder compacting method of this invention performs a punch driving step wherein, after filling material powder in a cavity, the material powder filled in the cavity is pressure molded by using an upper punch and a lower punch, said punch driving step comprising a primary driving step of driving either one of the punches until the thickness of the cavity formed between the upper and lower punches becomes slightly greater than a target molding thickness, and a secondary driving step of measuring a gap between the upper and lower punches and driving either one of the punches while controlling it until the measured value reaches the target molding thickness.
Bibliography:Application Number: CN20028029309