Method of injecting a powder containing carbon into a metal bath

Details Method of injecting a powder containing carbon into a metal bath Method of injecting a powder containing carbon into a metal bath

1977-01-27

1977-08-30

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 51, 75 59, 266 47, C21C 700

Patent

active

040452131

ABSTRACT:
In a method of deoxidizing and/or carburizing a metal, particularly steel, bath using an immersed nozzle consisting of two concentric tubes, the central tube of the nozzle is fed with an oxidizing gas during the or each oxidation phase, then with a scavenging gas, then with a neutral gas carrying carbon powder or powder containing carbon during the or each deoxidation or carburization phase and finally with a scavenging gas, the outer tube of the nozzle being fed with a protective fluid or different protective fluids during both the oxidation and deoxidation or carburization phases.

REFERENCES:
patent: 1968917 (1934-08-01), Soldatoff
patent: 3607227 (1971-09-01), Stephenson et al.
patent: 3859078 (1975-01-01), Haysom et al.
patent: 3897047 (1975-07-01), Kolb et al.

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