EP 1541327 A1 20050615 - POWDER COMPACTING METHOD AND POWDER COMPACTING SYSTEM
Title (en)
POWDER COMPACTING METHOD AND POWDER COMPACTING SYSTEM
Title (de)
PULVERVERDICHTUNGSVERFAHREN UND PULVERVERDICHTUNGSSYSTEM
Title (fr)
PROCEDE ET SYSTEME DE COMPACTAGE DE POUDRE
Publication
Application
Priority
- JP 0207537 W 20020725
- JP 2002205621 A 20020715
Abstract (en)
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. <IMAGE>
IPC 1-7
IPC 8 full level
B30B 11/00 (2006.01); B30B 11/02 (2006.01); B30B 15/30 (2006.01)
CPC (source: EP KR US)
B30B 11/00 (2013.01 - KR); B30B 11/005 (2013.01 - EP US); B30B 11/02 (2013.01 - EP KR US); B30B 15/302 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE GB LI
DOCDB simple family (publication)
EP 1541327 A1 20050615; EP 1541327 A4 20051005; AU 2002323943 A1 20040202; AU 2002323943 A8 20040202; BR 0212507 A 20040824; CN 100522586 C 20090805; CN 1649722 A 20050803; JP 2004042126 A 20040212; KR 20050042773 A 20050510; US 2006127268 A1 20060615; WO 2004007184 A1 20040122
DOCDB simple family (application)
EP 02755655 A 20020725; AU 2002323943 A 20020725; BR 0212507 A 20020725; CN 02829309 A 20020725; JP 0207537 W 20020725; JP 2002205621 A 20020715; KR 20057000340 A 20050107; US 52164805 A 20051216