发明名称 |
Guide structure for pierced hollows |
摘要 |
A pierced hollow rolled by obliquely positioned conical or barrel-shaped rolls, is held against excessive ovality by driven guide sheaves or disks acting in combination with guide bars downstream for controlling the rate of radial widening of the hollow. Oblique positions of the axes of the disks permits them to be of larger diameter.
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申请公布号 |
US4803861(A) |
申请公布日期 |
1989.02.14 |
申请号 |
US19870003830 |
申请日期 |
1987.01.16 |
申请人 |
MANNESMANN AG |
发明人 |
KUEMMERLING, ROLF;MUELLER, MANFRED;SCHIRMAG, KLAUS-PETER;NICKEL, WILHELM |
分类号 |
B21B19/04;(IPC1-7):B21B19/04 |
主分类号 |
B21B19/04 |
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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