Stand speed reference circuit for a continuous tandem rolling mill
US4011743A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1976 |
| Grant date | Mar 15, 1977 |
| Priority date | — |
| Expiry date | Apr 20, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B37/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A stand speed reference circuit is disclosed for providing speed reference signals to each of a plurality of selected stands in a continuous tandem rolling mill. U.s. pat. No. 3,852,983 to Cook for "Work Strip Gauge Change During Rolling in a Tandem Rolling Mill" discloses a method for changing to a new gauge schedule without shutting down the mill, by using a precalculated multiplier to successively and progressively change the mill stand speeds of all the stands save the pivot stand, the speed of which remains constant at the previously scheduled rate. Interstand tension regulators between the stands automatically change the delivery gauge at the stand of entry of the gauge change point of the moving strip. The present disclosure provides an analog stand speed reference circuit to realize the Cook teaching without disturbing the mill by introducing spurious interstand tensions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.