Process for the production of steel having a varying chemical co

Details Process for the production of steel having a varying chemical co Process for the production of steel having a varying chemical co

1989-10-12

1991-10-22

Seidel, Richard K.

Metal founding

Process

Shaping liquid metal against a forming surface

420 87, B22D 1110

Patent

active

050586599

ABSTRACT:
A process is provided for producing a steel bloom having a varying chemical composition in the cross-section. First, a flow of molten steel is directed into a casting chill form via a pouring pipe. Next, an alloy wire (e.g., sulphur foil, iron sulfite and other sulphur compounds) is introduced to the chill form. This alloy wire is melted in the molten steel from the upper surface of the molten steel to a maximum depth corresponding to the lower edge of the pouring pipe. The resulting steel bloom exhibits a substantially constant decreasing chemical composition in the cross-section from the outer to the center of the bloom and is easily regulated and reproduced.

REFERENCES:
patent: 3326647 (1967-06-01), Holtzmann et al.
patent: 4047556 (1977-09-01), Obinata et al.
patent: 4238230 (1980-12-01), Bucher et al.
patent: 4504554 (1985-03-01), Yoshioka et al.
patent: 4524819 (1985-06-01), Yoshimura

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