Method and apparatus for continuous finishing hot-rolling a steel strip
US5871138A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1996 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Jul 10, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B13/023
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for continuously finishing hot-rolling steel strips include partially joining a rear end of a preceding steel strip and a leading end of a succeeding steel strip after the strips have passed through a rough hot-rolling step. The joint is flattened. The joint is rolled with a first stand of a tandem rolling mill. The mill is provided with a plurality of stands that includes a pair of work rolls and backup rolls and/or intermediate rolls, so that a compression stress acts at the unjointed section of the strips in the longitudinal direction of the joint while tracking the joint. Shape-control-rolling is performed on the joint with a second and succeeding stands so that a section of the steel strip other than the joint is subjected to the shape-control-rolling at all the stands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.