Process for vacuum decarburization of steel

Details Process for vacuum decarburization of steel Process for vacuum decarburization of steel

1976-08-10

1977-11-08

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 49, C21C 710

Patent

active

040574210

ABSTRACT:
A process for the vacuum decarburization wherein oxygen gas is blown downward upon the molten steel surface under reduced pressure from a height apart from said steel surface characterized by applying a Laval nozzle having a divergence calculated from the theoretical Mach number which is, in turn, determined by a definite equation as a lance to provide a desired dynamic pressure on said molten steel surface and a desired depth of impression formed in the molten steel.
In this process, a cooling medium for cooling the lance with a cooling medium sprayed with water.

REFERENCES:
patent: 2093666 (1937-09-01), Vogt
patent: 3793002 (1974-01-01), Borgnat
patent: 3798025 (1974-03-01), Ramachandran
patent: 3854932 (1974-12-01), Bishop
patent: 3992194 (1976-11-01), Leroy
patent: 4001009 (1977-01-01), Bauer

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