Process for the manufacture of steels with a high chromium conte

Details Process for the manufacture of steels with a high chromium conte Process for the manufacture of steels with a high chromium conte

1975-01-02

1977-01-04

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 49, 75 60, C21C 552

Patent

active

040010090

ABSTRACT:
Post melting unit process for the decarbonization of stainless chromium steel containing at least about 10% chromium which comprises subjecting a melt of chromium containing steel at about 1580.degree.-1700.degree. C to a vacuum in the presence of sufficient oxygen to lower a starting carbon content which is above the ELC range into the ELC range, and simultaneously with subjection to vacuum, agitating the melt by gas purging, the heat added to the steel by combustion of carbon at least partially compensating for the heat loss due to post melting unit treatment.

REFERENCES:
patent: 2040566 (1936-05-01), Rohn
patent: 2093666 (1937-09-01), Vogt
patent: 3083422 (1963-04-01), Finkl
patent: 3336132 (1967-08-01), McCoy
patent: 3420657 (1969-01-01), Hansen

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