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:
Mar. 15, 1994
Filed:
Dec. 23, 1991
Hatsuyoshi Kumashiro, Kobe, JP;
Toshio Iida, Kobe, JP;
Sadaaki Murakawa, Kobe, JP;
Makoto Ueda, Kobe, JP;
Yoshikazu Nishi, Ikeda, JP;
Taizou Kiyosuke, Kobe, JP;
Hiroyuki Nakashima, Hikari, JP;
Yoji Ao, Kitakyushu, JP;
Hideo Kaneko, Kobe, JP;
Hiroshi Iwasaki, Hikari, JP;
Kazuaki Sueoka, Hikari, JP;
Kenichi Murai, Akashi, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Hyogo, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
In a method and apparatus for withdrawing a strand in a horizontal continuous casting installation, the strand is withdrawn from a mold by a predetermined stroke and then retracted by a smaller stroke corresponding to shrinkage of the strand. This cycle of withdrawal and retraction is repeated intermittently. A strand withdrawing and retracting characteristic of a cycle is set in a control unit, and pinch rolls for withdrawing and retracting the strand are controlled based on the set characteristic. Actual withdrawing and retracting strokes of the strand are detected by a detecting device and the detected signal is compared with the set characteristic to produce an instruction signal which is fed back to the pinch rolls, so that the positional accuracy of the strand and the quality of the strand are improved.