Holding the temperature of metal melts of specified compositions

Details Holding the temperature of metal melts of specified compositions Holding the temperature of metal melts of specified compositions

1974-04-17

1976-05-18

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 59, C21C 710

Patent

active

039574873

ABSTRACT:
Method for maintaining the temperature level of metal melts of specified compositions, comprising the steps of a/ excluding oxygen access to a melt contained in a furnace; b/ slowly displacing the atmospheric air from above the melt surface by introducing an inert protective gas, in laminar flow, without the generation of turbulence; and c/ thereafter maintaining above the melt surface a pure protective gas atmosphere, to meet a consumption of between 0.1 and 1% of the volumetric capacity of the furnace per minute, this permitting the melt to be cast in several pours or continuously without oxidaton of the alloying components and without increase in its gas content, even hours after having been melted down.

REFERENCES:
patent: 2993780 (1961-07-01), Allard
patent: 2997384 (1961-08-01), Feichtinger
patent: 3467167 (1969-09-01), Mahin
patent: 3574596 (1971-04-01), Lohman

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