Alloys or metallic compositions – Processes
Patent
1990-11-19
1992-01-07
Rosenberg, Peter D.
Alloys or metallic compositions
Processes
75560, C22C 100
Patent
active
050789643
ABSTRACT:
A known "spark cup process" may be operated without the spark cup if the violent fluctuations in the melt surface with which the electric arc is struck are accommodated so as to allow the electric arc to be maintained substantially continuously. Controlling the dynamic profile of the melt surface without a spark cup allows continuous operation of the electric arc which generates enough plasma to permit addition of as much as 1000 lb/hr of a spray of superheated feed material to a flowing stream of melt which assimilates the feed material.
REFERENCES:
patent: 3467167 (1969-09-01), Mahin
patent: 4688771 (1987-08-01), Eckert et al.
patent: 4689199 (1987-09-01), Eckert et al.
patent: 4784832 (1988-11-01), Eckert et al.
patent: 4792431 (1988-12-01), Eckert
patent: 4793971 (1988-11-01), Eckert et al.
Arndt Eric D.
Keller Clark W.
Sammy C. Ricardo
Urbanic John M
Aluminum Company of America
Lobo Alfred D.
Pearce-Smith David W.
Rosenberg Peter D.
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