Method for the refining of molten metal

Details Method for the refining of molten metal Method for the refining of molten metal

1974-02-15

1977-02-22

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 30, 75 51, 75 53, 75 58, 75 94, 75 95, C21C 552

Patent

active

040090230

ABSTRACT:
Steels, free from hard inclusions which will not deform during hot working, are obtained by introducing into a molten steel under calcium free conditions a silica based slag powder having fluxing components such as manganese oxide which gives a slag of melting point and of density not higher than that of the steel. The slag powder melts and rises through the molten steel interacting with inclusion components, most of which rise to the surface of the melt, so that when the steel solidifies any inclusions remaining are free from calcium and will deform at hot forming temperatures.

REFERENCES:
patent: 1744418 (1930-01-01), Smith
patent: 2593505 (1952-04-01), Wagstaff
patent: 3015554 (1962-01-01), Rummel
patent: 3827877 (1974-08-01), Pantke et al.

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