Method of producing steel with high manganese and low carbon...

Details Method of producing steel with high manganese and low carbon... Method of producing steel with high manganese and low carbon...

2011-08-16

2011-08-16

Wyszomierski, George (Department: 1733)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

C075S531000, C075S010630

Reexamination Certificate

active

07998243

ABSTRACT:
A method of producing steel (1) with a high manganese and low carbon content on the basis of liquid pig iron (2) or liquid steel (3) and slag-forming constituents (4) with the object of preventing existing drawbacks of process route in vessels other than, e.g., electrical arc furnaces (18). With steel produced with a high manganese and low carbon content, in a process, the carbon component is reduced to about 0.7-0.8% by a combined blowing of oxygen (7) through top lances (8) and underbath nozzles (9) after feeding of liquid ferro-manganese (50and liquid steel (3a) in a FeMn-refining converter (6a), wherein a component of a cold end product from premelt is added as cooling means (10), and wherein the carbon component is reduced to about 0.05-0.1% C by a continuous blowing of oxygen (7) through the underbath nozzles.

REFERENCES:
patent: 4808220 (1989-02-01), Litterscheidt et al.
patent: 5462579 (1995-10-01), Narahara et al.
patent: 63-206446 (1988-08-01), None

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