Fabrication of hollow, cored, and composite shaped parts from se

Details Fabrication of hollow, cored, and composite shaped parts from se Fabrication of hollow, cored, and composite shaped parts from se

1986-07-02

1987-04-14

Lechert, Jr., Stephen J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

75243, 75246, 419 5, 419 8, 419 11, 419 28, 419 25, 419 66, 419 68, 428 36, 428408, B22F 300

Patent

active

046578226

ABSTRACT:
Alloy powder is packed into a mold which comprises a complex-shaped solid aphite inner core and a similarly complex-shaped thin glass outer wall. The mold is evacuated, sealed, and then heated to the alloy sintering temperature, the glass softens and applies an isostatic pressure on the alloy as the alloy particles consolidate. After the consolidation step, the mold and its contents are cooled and the glass and graphite materials are removed from the alloy object. This method is particularly useful for preparing complex fittings of Nitinol shape memory alloys.

REFERENCES:
patent: 3535093 (1970-10-01), Sara
patent: 3708282 (1973-01-01), Burr et al.
patent: 4368074 (1983-01-01), Otto et al.
patent: 4423119 (1983-12-01), Brown et al.
patent: 4568516 (1986-02-01), Adlerborn et al.

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