Rolling mill control system
US4485649A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1982 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Oct 15, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2203/187
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rolling mill having hydraulic cylinders in each housing to adjust the roll gap is provided with a control system whereby a workpiece is kept on a central path through the mill and is prevented from wandering from this path towards one of the mill housings. The system includes a pair of circuits and a connector between the circuits for averaging the load on each housing and controlling the roll gap in accordance with a certain mill stretch factor. The difference between the loads is also obtained and a signal, in accordance with a different stretch factor, is applied to the housing with the heaviest load and a signal of the same magnitude, but opposite polarity, is applied to the other housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.