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:
Jan. 27, 2015
Filed:
Dec. 27, 2012
Akihito Yamane, Tokyo, JP;
Shigeru Kidani, Tokyo, JP;
Akihito Yamane, Tokyo, JP;
Shigeru Kidani, Tokyo, JP;
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Abstract
[Problem to be Solved] A device for adjusting the rolling positions of rolling rolls and restraining poor roll-biting of the front edge part of a pipe material rolled by a three-roll mandrel mill includes pressing-down devices(P1 to P6) for moving rolling rolls Rto Rin the rolling direction and a control unitfor controlling the pressing-down devices. Immediately after the front edge part of a pipe material T has begun to be rolled by the rolling rolls disposed on at least one rolling stand of the rolling rolls Rto R, the control unitcontrols the pressing-down deviceto move the rolling rolls in the closing direction. Preferably, the rolling rolls disposed on at least one rolling stand of the rolling rolls Rto Rin the closing direction are moved at a speed of 16 mm/sec or higher using the pressing-down device