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.

Date of Patent:
Sep. 17, 2002

Filed:

Apr. 19, 2001
Applicant:
Inventors:

Takeshi Hirabayashi, Chiba, JP;

Shigeru Isoyama, Chiba, JP;

Takahiro Yamasaki, Chiba, JP;

Hideyuki Nikaido, Chiba, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21B 3/772 ;
U.S. Cl.
CPC ...
B21B 3/772 ;
Abstract

The present invention eliminates the need to stop the operation of a line even when trouble arises before, during, or after an operation of joining metal blocks in hot rolling. According to a specific solving means of the present invention, when a succeeding metal block is to be subjected to hot finish rolling in succession to a preceding metal block after the leading end of the succeeding metal block is joined to a tail end B of the preceding metal block on the inlet side of a finish rolling mill , it is determined before and after joining whether or not endless rolling is impossible. When it is impossible, joining is aborted, and the succeeding metal block is temporarily stopped, is fed again after the tail end B of the preceding metal block moves out of the finish rolling mill , and is finish-rolled under the conditions set for batch rolling. When joining was not performed successfully, a joint is cut between a joining unit and the finish rolling mill , and the rolled material is bitten by the finish rolling mill set for batch rolling.


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