Method of manufacturing stainless steel

Details Method of manufacturing stainless steel Method of manufacturing stainless steel

1994-09-16

1997-03-11

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75554, 420116, 420 71, C21C 7068

Patent

active

056096690

ABSTRACT:
The invention relates to a method of manufacturing stainless steel, by treating a raw high-carbon steel in a first stage with a gaseous mixture that contains oxygen and inert gas, therewith lowering the carbon content of the raw steel to a value of 0.2-0.1%. The steel bath is then treated in a second stage with solely an inert gas, until the carbon content has fallen to the desired value. The invention is characterized in that the steel bath is treated in the first stage alternately with an oxygen-rich gas and with an inert gas, until the carbon content of the steel has fallen to the desired value.

REFERENCES:
patent: 3046107 (1962-07-01), Nelson
patent: 3252790 (1966-05-01), Krivsky
patent: 3728101 (1973-04-01), d'Entremont
patent: 3854932 (1974-12-01), Bishop
patent: 4619694 (1986-10-01), Kawanobe et al.

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