发明名称 |
METHOD FOR CALIBRATING ROLLS OF REDUCTION TUBE ROLLING MILL |
摘要 |
FIELD: calibration of rolls of roll sets consisting of three rolls of multistand reduction mill for rolling tubes without mandrel. SUBSTANCE: in order to enhance roll calibration and to act upon metal yielding in such a way that to provide lowered local thickening of tube wall at reducing it in critical points along tube perimeter at least several sets of rolls arranged one after another in rolling direction have dimension of convexity 5 on lateral sides of roll groove 4 increasing by constant or the same percentage values. EFFECT: lowered local thickening of reduced tube wall in critical points along its perimeter. 4 cl, 2 dwgh
|
申请公布号 |
RU2117540(C1) |
申请公布日期 |
1998.08.20 |
申请号 |
RU19970115371 |
申请日期 |
1996.02.02 |
申请人 |
MANNESMANN AG |
发明人 |
KHANS-JOAKHIM PELE;PETER TIFEN |
分类号 |
B21B17/14;(IPC1-7):B21B17/14 |
主分类号 |
B21B17/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|