Ironing ring having a microstructure
US9555458B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 2015 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Oct 1, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D22/28
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An ironing ring for use in a press for ironing pressing or drawing of a workpiece. The ironing ring has a work surface which, upon deforming the workpiece, contacts the workpiece, and causes flowing of the workpiece material. In order to prevent friction deposits in the region of the work surface of the ironing ring, a microstructure, differing from the roughness of the work surface, is introduced into the work surface, which forms elevations and/or recesses in the work surface. Material particles remaining on the work surface after the deforming of a workpiece thus adhere less strongly to the work surface and can be stripped off during the next deforming process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.