Method for producing iron-base dispersion-strengthened alloy tube
US6250125A · kind A · utility
4Cited by
2References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2000 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Mar 15, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B21/005
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of producing an iron-based dispersion-strengthened alloy tube (2-1) by utilizing a rolling machine having grooved rolls (5, 5-1) and a mandrel (9)for forming the tube (2-1) from a raw rolling tube (2). In the method, a length of contact between a rolling surface (6, 6-1) of a caliber formed by the grooved rolls and an outer circumference of the rolling tube is set to be 0.9 times or more of a circumferential length of the rolling tube over the entire area of the rolling region. It is preferred that the method be performed by a Pilger type rolling machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.