Rolling mill method
US4730475A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | May 6, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | May 6, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2269/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A metal workpiece such as a slab is rolled into a desired width without requiring broadsiding. The system generally involves reducing a first portion along the width of the workpiece to a first thickness while creating a second portion along the width of the workpiece having a thickness greater than the first portion thickness and having a predetermined mass. Subsequently the second portion is reduced to establish a predetermined increase in the width of the workpiece and a decrease in the thickness of the workpiece to obtain a substantially uniform thickness along substantially the entire width of the workpiece. A preferred approach includes providing a pair of cooperating work rolls at least one of which has a generally cylindrical portion and at least one adjacent tapered portion. Initial reduction is effected by employing a pair of cooperating cylindrical central portions and at least one tapered portion. This provides a workpiece with a reduced portion and an enlarged portion. The workpiece subsequently may be rotated 180 degrees or side shifted and rolled between a generally cylindrical central portion and a second pair of tapered portions. Subsequently, further reduction may…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.