Method of continuously hot rolling steel pieces
US5957368A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Mar 10, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23D35/001
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A continuous hot rolling method is available for continuously hot finish rolling steel pieces. The trailing end of a preceding steel piece and the leading end of a succeeding steel piece are cut by a drum shear which sandwiches the steel piece between its upper drum and lower drum, having cutting blades on the peripheries of the drums. The cut ends are heated to raise the temperatures thereof by high-frequency induction heating, pressed against each other to butt-join the cut ends. The joined steel pieces are then supplied to a rolling equipment. The trailing end of the preceding steel piece and the leading end of the succeeding steel piece are cut individually by two pairs of the cutting blades. One pair of the cutting blades has the obverses of the blades oriented in opposite directions in the obverse side and the reverse side of the steel piece. The other pair of cutting blades has the obverses of the blades oriented in the opposite directions relative to the former pair of cutting blades, while each steel piece is transferred to the same direction. The method according to the invention significantly reduces the displacement produced when the steel pieces are joined by applying …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.