Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Consolidation of powder prior to sintering
Patent
1997-03-26
1998-10-27
Jenkins, Daniel J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Consolidation of powder prior to sintering
419 54, 419 55, 264 56, 264 63, B22F 312, C04B 3564
Patent
active
058289429
ABSTRACT:
A method for subjecting a molded article formed of a powder material and having a complicated shape to isostatic pressing includes covering the molded article with a water impermeable rubber film. The surface area of the rubber film is larger than the surface area of the molded article. In the method, the rubber film follows the complicated shape, e.g., a shape having notch(es), throughhole(s), dent(s), and bend(s), or a cylindrical shape, of the molded article. As a result, the rubber film is rarely damaged during isostatic pressing and the ease of removal of the rubber film after isostatic pressing is significantly improved.
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Jenkins Daniel J.
NGK Insulators Ltd.
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