Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1976-12-06
1978-07-25
Schafer, Richard E.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
219118, 219144, 425 78, 219 7801, 2191171, B22F 314, H05B 360
Patent
active
041026799
ABSTRACT:
An improvement in a powder metallurgic manufacturing process where metal powder is compressed and heated in a mould and heat is produced by conducting electric current through the mould and the metal powder as well as through at least one electrically resistive fireproof body in actual contact with the mould where heat produced in the body is transferred to the mould and the metal powder. The improvement comprises maintaining electric tension between 2 and 200 volts; the current efficiency per unit volume of the mould between 20 and 200 W/cm.sup.3 ; and the resistivity of the electrically resistive fireproof body between 0.03 and 100 ohm .times. cm.
REFERENCES:
patent: 1896853 (1933-02-01), Taylor
patent: 1896854 (1933-02-01), Taylor
patent: 2089030 (1937-08-01), Kratky
patent: 2133495 (1938-10-01), Willey
patent: 2149596 (1939-03-01), Gillett et al.
patent: 2195297 (1940-03-01), Engle
patent: 2355954 (1944-08-01), Cremer
patent: 2372605 (1945-03-01), Ross
patent: 2938998 (1960-05-01), Wilson
patent: 3069261 (1962-12-01), Kilby et al.
patent: 3445625 (1969-05-01), Hetherington
patent: 3546413 (1970-12-01), Ishizuka
patent: 3665151 (1972-05-01), Piper
patent: 3727028 (1973-04-01), Kuratomi
patent: 3778586 (1973-12-01), Breton
Goetzel, C. G. Treatise on Powder Metallurgy vol. 1, pp. 480-481, Interscience, N.Y. 1949.
L.A. Levanto Oy
Schafer Richard E.
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