MOLD POWDER FOR CONTINUOUSLY CASTING STEEL AND METHOD FOR CONTINUOUSLY CASTING STEEL

Japanese Patent JP3717049

B2

PROBLEM TO BE SOLVED: To provide mold powder for continuously casing steel in which in the case of continuously casting the steel, the surface flaw on a cast slab and the rolled flaw are not developed, such operational trouble as breakout is not developed, the productivity of the steel is improved, the production cost can drastically be reduced and further, this mold powder can contribute to the restraint of the corrosion of a continuoua caster and reduce the corrosion at the powder line portion of an immersion nozzle, and a continuous casting method for steel using this mold powder.
SOLUTION: This mold powder for continuously casting the steel is the one having ≥5 poise viscosity at 1,300°C and satisfying the following formula (1). A≥(B+30)0.35... (1). Wherein, A: the total carbon (wt.%) in the powder, B: the viscosity (poise) at 1,300°C. In the continuous casting of the steel, as the mold powder, the above powder is used at the powder consumption of 0.01-0.20 kg/cm2 per unit surface area of the cast slab to perform the casting.

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Akihiro Morita
Tomoaki Omoto

JP2000155864A

November 16, 2005

May 26, 2000

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Shinagawa White Brick Co., Ltd.

B22D11/108; B22D11/07; B22D11/111; C21C7/076; (IPC1-7): B22D11/108; B22D11/07; B22D11/111; C21C7/076

JP2025254A
JP9308951A
JP4100660A
JP2165853A
JP2000158107A

Noriaki Miyakoshi

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