Unit containing a moulding tool for semi-isostatic compaction of

Details Unit containing a moulding tool for semi-isostatic compaction of Unit containing a moulding tool for semi-isostatic compaction of

1983-11-02

1985-01-29

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means to create a vacuum or apply fluid pressure within a...

72 63, 264109, 264314, 264DIG50, 425 78, 425DIG19, 425DIG44, B30B 502

Patent

active

044962991

ABSTRACT:
A moulding tool unit for semi-isostatic compaction of a powder has a mould cavity (14) defined by an elastomeric jacket (121). The jacket (121) is surrounded with clearance by an elastomeric sleeve (122) which is sealingly joined to the jacket (121). The space (123) between the sleeve (122) and jacket (121 ) is filled with an isostatic pressure translating medium such as a hydraulic liquid (127). The jacket (121) may be supported in a direction towards the sleeve (122) by a stiff jacket (125) having perforations (126) through which the hydraulic liquid (127) can flow. The unit is adapted such that for a pressing operation it can be inserted with a small clearance and pressurized in the dry pressing chamber of a hydraulic press.

REFERENCES:
patent: 3184528 (1965-05-01), Norwalk
patent: 3832103 (1974-08-01), Bowles
patent: 3897531 (1975-07-01), Overhoff et al.
patent: 4046499 (1977-09-01), Saito
patent: 4056347 (1977-11-01), Trolle
patent: 4097977 (1978-07-01), Pollner

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