Method for shining metal sheet surfaces and method for cold-rolling metallic materials
US5390518A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 3, 1993 |
| Grant date | Feb 21, 1995 |
| Priority date | — |
| Expiry date | Mar 3, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B3/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention provides a method for improving the luster of a metal sheet surface without deteriorating the productivity and also in reducing the difference in glossiness between the upper and lower surfaces of the metal sheet at the time of cold-rolling. By making the velocity, after rolling of the metal sheet, equal to or larger than the rotational circumferential velocity of the work rolls, and by rolling the metal sheet with upper and lower work rolls crossed with each other in such manner that an angle of slip scratches left on the metal sheet surfaces becomes 5 degrees or larger and shear deformation in the widthwise direction can be effectively given to the metal sheet just before rolling, thereby improving the surface luster of the metal sheet. In addition, in the case where luster of the metal sheet surface is improved by changing the cross angle between the upper and lower crossing work rolls, the sheet configuration is corrected by a configuration control actuator, depending upon the sheet configuration of the metal sheet after the cross angle is changed. Furthermore, the difference in glossiness between the upper and lower surfaces of the metal sheet is reduced by selec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.