Method for forming large-size QCr0.8 alloy tapered cylindrical ring
US11684965B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2021 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Nov 17, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2230/25
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for forming a QCr0.8 alloy tapered cylindrical ring, including: heating a standard QCr0.8 alloy cylindrical part followed by upsetting and stretching at least twice to obtain a primary blank; heating the primary blank followed by upsetting and chamfering to obtain a secondary blank, where a diameter of a top end is greater than that of a bottom end; subjecting the secondary blank to backward extrusion to form a preform; machining the preform to remove a flash and a bottom residue; subjecting a bottom end of the preform to local bulging to enable a shape and a size thereof to match that of a drive roller in a forming tooling, so as to form a profiled ring blank; and rolling the profiled ring blank by a radial-axial ring rolling machine with the forming tooling to form the tapered cylindrical ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.