Manufacture of alloy steels and ferrous alloys

Details Manufacture of alloy steels and ferrous alloys Manufacture of alloy steels and ferrous alloys

1975-02-21

1977-06-14

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 59, C21C 700

Patent

active

040294978

ABSTRACT:
Steel, alloy steel or a ferrous alloy is maufactured in a converter by charging the converter with a metallic feedstock comprising steel, scrap, iron sponge, high grade cast iron or a mixture thereof together with a ferro-alloy and a flux to provide a pool of molten metal. The molten metal is refined by blowing it with a decarburizing feed gas which is reducing to wustite at the temperature at which the converter is operated. A metallic oxide may be added to the converter, the addition being either to the initial metallic feedstock or, preferably continuously, during whole or part of the refining operation. The metallic oxide may be an oxide of a metal which is used as an alloying constituent or additive to a steel, alloy steel or ferrous alloy. Where a metallic oxide is added the blow gas can also be hydrogen or an inert gas such as nitrogen or argon.

REFERENCES:
patent: 3330645 (1967-07-01), De Moustier
patent: 3867136 (1975-02-01), Eriksson

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