Powder compacting method and powder compacting system

• Main Authors: YANO KATSUHIKO, SASAKI MASAO, HANABUSA AKIHITO, YAMADA HEIJI, MATSUI MASAKI, SASAGAWA KATSUMI, KOBAYASHI MASARU, SATO HIDEO
• Format: Patent
• Language: English
• Published: 03.08.2005
• Edition: 7
• Subjects: PERFORMING OPERATIONS; PRESSES; PRESSES IN GENERAL; TRANSPORTING

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.