发明名称 |
APPARATUS FOR ADJUSTING SCREW-DOWN POSITION OF MILL ROLL WHICH CONSTITUTES THREE-ROLL TYPE MANDREL MILL, AND METHOD FOR MANUFACTURING SEAMLESS PIPE |
摘要 |
<p>[Problem to be Solved] There is provided a device for adjusting the rolling positions of rolling rolls, which is capable of, for example, restraining poor roll-biting of the front edge part of a pipe material rolled by a three-roll mandrel mill. [Solution] The device 100 for adjusting the rolling positions of rolling rolls R1 to R6 constituting the three-roll mandrel mill includes pressing-down devices 1 (P1 to P6) for moving the rolling rolls R1 to R6 in the rolling direction and a control unit 2 for controlling the pressing-down devices 1. 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 R1 to R6, the control unit 2 controls the pressing-down device 1 to move the rolling rolls in the closing direction. Preferably, the control unit 2 moves the rolling rolls disposed on at least one rolling stand of the rolling rolls R1 to R6 in the closing direction at a speed of 16 mm/sec or higher by using the pressing-down device 1.</p> |
申请公布号 |
EP2465618(A1) |
申请公布日期 |
2012.06.20 |
申请号 |
EP20100808139 |
申请日期 |
2010.08.03 |
申请人 |
SUMITOMO METAL INDUSTRIES, LTD. |
发明人 |
YAMANE, AKIHITO;KIDANI, SHIGERU |
分类号 |
B21B17/02 |
主分类号 |
B21B17/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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