Synthetic gasket materials for use in high-pressure presses

Details Synthetic gasket materials for use in high-pressure presses Synthetic gasket materials for use in high-pressure presses

1997-06-13

1999-01-12

Le, H. Thi

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

75228, 75230, 75232, 75233, 75328, 75768, 75773, 428328, 428329, 428331, 428332, 428454, 428688, B32B 516, B22F 100, C22C 2912

Patent

active

058585257

ABSTRACT:
A synthetic gasket material for use in a high-pressure press includes a major proportion of clay mineral powder having sufficient lubricity to flow in a high-pressure press, a minor proportion of at least one hard material powder having a sufficiently greater hardness than the clay mineral to retard flow of the clay mineral and form a seal during pressing in a high-pressure press, and a sufficient amount of binder to form an integral body. The synthetic gasket material is formed by thoroughly mixing together in desired proportions the clay mineral, hard material, and binder. The mixture is compacted into a body near net geometry and having a desired configuration to facilitate use in the high-pressure press. The compacted body is heated for a sufficient time and at a sufficient temperature to remove non-crystallographic water. A synthetic gasket material prepared according to principles of this invention displays improved flow, pressure transmitting, and thermal insulating properties when compared with gasket material made from natural pyrophyllite, due to the improved compositional consistency, i.e., lack of impurities and consistently low moisture content, of the synthetic gasket material.

REFERENCES:
patent: 3793134 (1974-02-01), Hardy et al.
patent: 3914078 (1975-10-01), Kendall
patent: 4005180 (1977-01-01), Greenhalgh et al.
patent: 4140448 (1979-02-01), Brinkeborn et al.
patent: 4529663 (1985-07-01), Lancaster et al.
Japanese Patent Abstract, Publication No. JP5317682, Publication Date 1993.
Japanese Patent Abstract, Publication No. JP6114258, Publication Date 1994.

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