Metallurgical apparatus – Process
Patent
1984-06-19
1986-04-22
Rutledge, L. Dewayne
Metallurgical apparatus
Process
266 92, 222590, B22D 4100
Patent
active
045837171
ABSTRACT:
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.
REFERENCES:
patent: 3990614 (1974-11-01), Matsuo et al.
patent: 4019562 (1977-04-01), Shiraiwa et al.
patent: 4077457 (1978-03-01), Hashio et al.
patent: 4355787 (1982-10-01), Hannes et al.
Hasegawa Yoshii
Kishida Tohru
Kohgo Takao
Nakamura Masahiro
Tsuruta Takeshi
Kastler S.
Rutledge L. Dewayne
Sumitomo Metal Industries Ltd.
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