Process for maintaining magnesium-containing cast iron melts in

Details Process for maintaining magnesium-containing cast iron melts in Process for maintaining magnesium-containing cast iron melts in

1980-09-22

1982-04-13

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 53, 75 93R, 75 96, 75130R, C22C 3308

Patent

active

043245870

ABSTRACT:
The present invention provides a process for maintaining magnesium-containing cast iron melts in a castable state for comparatively long periods of time of, for example, several hours or days, with the use of a protective gas atmosphere, wherein the protective gas atmosphere present above the surface of the melt, as well as all the adjacent parts of the apparatus used, is kept at a temperature above the boiling point of magnesium, i.e. 1102.degree. C., and always has a partial pressure of magnesium vapor which is the same as or greater than the vapor pressure of the magnesium within the melt.

REFERENCES:
patent: 4089678 (1978-05-01), Hanawalt
patent: 4214899 (1980-07-01), Radzilowski

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