B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/183
B22D 37/00 (2006.01) B22D 11/18 (2006.01)
Patent
CA 1237571
ABSTRACT OF THE DISCLOSURE 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 adjust- able of an extent of opening, such as a sliding nozzle. The extent of opening of the nozzle is changed peri- odically 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 accu- racy. 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. - 25 -
456932
Hasegawa Yoshii
Kishida Tohru
Kohgo Takao
Nakamura Masahiro
Tsuruta Takeshi
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Sumitomo Metal Industries Ltd.
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