Process and installation for planishing a thin metal strip
US5666836A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1995 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Jan 31, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D1/05
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for planishing under traction a thin metal strip in an installation including a planisher comprising at least one bending unit with two planishing sets and a multi-roller leveling assembly comprising two rows of rollers. The imbrication of the planishing sets and the multi-roller leveling assembly and two tension blocks, respectively, are adjusted upside and downside to obtain a prescribed elongation of the strip. Flatness faults in the planisher are corrected by adjusting the through-speeds and imbrication of the planishing sets, such that the prescribed elongation for planishing is substantially attained by the time the strip leaves the planisher. At least longitudinal camber faults due to the passage in the planisher are corrected in the multi-roller assembly by setting up degressive imbrications of the rollers between the input and output of the multi-roller assembly by swinging one row with respect to the other so as to cause progressively diminishing reverse bending effects without substantially increasing the elongation already produced in the planisher by traction-bending.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.