Forming process for metal rail blank
US4615200A · kind A · utility
3Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1984 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Mar 21, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B1/46
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for forming a rail blank in a universal stand, starting with an initial section (1) of rectangular cross-section comprising a first series of passes for cutting into the web forming portion by way of horizontal rolls (2, 3) accompanied by reduction of the head by way of one of the vertical roll (5), and a second series of passes for simultaneously reducing the head flank forming portions by the horizontal rolls (2, 3) and the base forming portions by one of the vertical roll (4) of the universal stand, the other roll (5) remaining non-active.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.