The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 22, 1986
Filed:
Jun. 19, 1984
Yoshii Hasegawa, Wakayama, JP;
Takeshi Tsuruta, Wakayama, JP;
Takao Kohgo, Wakayama, JP;
Masahiro Nakamura, Wakayama, JP;
Tohru Kishida, Wakayama, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
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.