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    17.
    发明专利
    未知

    公开(公告)号：SE321315B

    公开(公告)日：1970-03-02

    申请号：SE316368

    申请日：1968-03-11

    Applicant: ASEA AB

    Inventor： LANDA T ,  SYVAEKARI P ,  WESTMAN E

    IPC: B01J3/04 ,  B22F3/04 ,  B30B11/00

    Abstract: 1,250,817. Isostatic pressing apparatus. ALLMANNA SVENSKA ELEKTRISKA A.B. 10 March, 1969 [11 March, 1968], No. 12426/69. Heading B5A. Apparatus for subjecting articles to high fluid pressures, e.g. isostatic pressing of hard metal products, electrical heating elements with sheaths and electrodes comprises a high pressure cylinder 2, end closure members 8, 26, means 19 and 21 for supplying two high pressure fluids to the cylinder, and means 1 for taking up the axial forces exerted on the closure members wherein one closure member 8 comprises a unit 14 which extends into the cylinder and at least one elastomeric wall 15 or displaceable wall which separates the two pressure media. The high pressure cylinder comprises a tube 3 with reinforcing sheath 4 and casing 7 held in place by support rings 5 and locking rings 6. The upper closure member 26 has a sealing ring 27 in contact with the tube 3 and an air bleed passage 35. Lower end closure 8 is suspended in the lower support ring 5 by ring 9, springs 10 and bolts 11 and carries a tubular part 14. An elastomeric bag 15 is suspended in the tubular part 14 and a perforated plate 17 is inserted in the locking ring 16 which holds the elastomeric bag 15 in place. Channel 19 is used for supply of pressure material which may contact the article 34 to the body of the cylinder. The pressure producing fluid is forced through passage 21 into the space 22 between tubular part 14 and the elastomeric bag 15 and transmits pressure through the bag to the pressing fluid. Perforated plate 17 keeps the article 34 out of contact with the elastomeric bag. The yokes 1 of a press stand maintain the closure members in the tube when pressure fluid is applied. In an alternative embodiment the elastomeric bag 15 is replaced by a piston sliding in tubular part 14.

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