KASSETT INNEFATTANDE EN FORMPRESS FOR SEMI-ISOSTATISK KOMPAKTERING AV ETT I PRESSFORMSKAVITETEN INNEHALLET PULVER

摘要

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.