Multi-pass rolling method and multi-path rolling-mill stand for carrying out said method
US4759205A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 27, 1986 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Mar 27, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2269/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A multi-pass rolling method which permits a multi-pass rolling-mill stand to perform multi-path rolling and still stabilize the rolling operation by preventing lateral deviation movement of a metal workpiece being rolled. The rolling-mill stand has three or more work rolls arranged one above the other and the workpiece is simultaneously rolled at two or more points by at least one of the work rolls. Directly or indirectly roll gaps are detected on the work and drive sides of at least one pass by sensors. A difference signal from the output signals of the sensors is obtained thereby determining a roll gap difference. Control devices are provided which are responsive to the difference signal for independently changing the roll gaps on the work and drive sides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.