Sumitomo Metal Industries, Inc.

Tohru Kishida

Masahiro Nakamura

Yoshii Hasegawa

Takao Kohgo

Takeshi Tsuruta

This invention relates to a method for pouring molten metal, that is applied when molten metal is poured into a vessel or a mold from a pouring apparatus provided with a nozzle having a sliding portion adjustable of an extent of opening, such as a sliding nozzle. The extent of opening of the nozzle is changed periodically with a preset extent of opening as the center of the change. The method enables to prevent that molten metal gets into and solidifies in a gap of the sliding portion of the nozzle, and always to control a pouring amount of molten metal with a stable accuracy. Also, the sliding resistance of the sliding portion of the nozzle is detected, and the extent of opening of nozzle is changed with a vibration width corresponding to the resistance. The method enables to drop off the molten metal adhering and solidifying around the sliding portion of the nozzle, or to maintain a stable control accuracy even when the heat of molten metal causes distortion at the nozzle to change the sliding resistance.

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Wakayama, Japan

Tohru Kishida