Isostatic hot forming of powder metal material

Details Isostatic hot forming of powder metal material Isostatic hot forming of powder metal material

1986-11-03

1987-11-03

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Heat and pressure simultaneously to effect sintering

219 75, 219 85, 219 1041, 219 1075, 266 44, 266249, 266275, 373138, 373147, 419 31, 419 48, 419 52, B22F 100

Patent

active

047042524

ABSTRACT:
A crushed powder metal workpiece preform is enclosed in a shell or envelope of a ceramic liquid die material and is inductively heated through the ceramic material and then transferred to a pressure vessel wherein the liquid die material is pressurized to provide a rapid omnidirectional compaction of the powder metal preform and thus a fused powder metal workpiece.

REFERENCES:
patent: 4088258 (1978-05-01), Regalbuto
patent: 4518441 (1985-05-01), Hailey
patent: 4539175 (1985-09-01), Lichti et al.
patent: 4601877 (1986-07-01), Fujii et al.
"A Process for Improved Induction Heating of Powder Metal Compacts", article by Robert L. Conta, 1975, 5 pages.
"Brighter Prospects for GKN Powder Forgings", article in MPR, Feb. 1983, 3 pages.
"Federal-Mogul's Success with `Sinta Forge` Process", article in MPR, Feb. 1983, 4 pages.
"Pseudo-HIP Using Conventional Presses", article in MPR, Jun. 1983, 3 pages.
"Upsurge in Isostatics", article in American Machinist Special Report 765, Apr. 1984, pp. 99-114.
"Rapid Omnidirectional Compaction", article by Clifford A. Kelto of Kelsey-Hayes, undated, 5 pages.

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