Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1976-02-06
1977-11-08
Rosenberg, P. D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75129, 75130R, C21C 700
Patent
active
040574202
ABSTRACT:
Methods and apparatus for introducing addition agents into molten metal retained in a vessel include providing a wire comprised of a metallic sheath encapsulating powdered and/or solid addition agents, preheating the wire with a controlled electrical current while feeding the preheated wire into the molten metal such that the metal sheath and addition agents melt before the wire contacts a vessel wall and the addition agents homogeneously dissolve at a predetermined rate in the molten metal. Also, the addition agents may be selected so as to react with impurities such as oxygen, sulfur, etc. to enable the removal thereof from the molten metal.
REFERENCES:
patent: 3728109 (1973-04-01), Okubo
patent: 3729309 (1973-04-01), Kawawa
Brace Arthur A.
Lesnewich Alexander
Airco, Inc.
Bopp Edmund W.
Cassett Larry R.
Rae David L.
Rosenberg P. D.
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