Process for manufacturing plastically deformed light metal objects and shaped bodies having a light metal part
US4441646A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1981 |
| Grant date | Apr 10, 1984 |
| Priority date | — |
| Expiry date | Apr 22, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21C23/22
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Manufacture of a light metal shock absorber by impact extrusion of a light metal blank whereby, during the impact extrusion process itself, a steel strip is brought into contact with the base of the part which becomes free of obstructive light metal oxide as a result of impact extrusion and is as a result metallically bonded to the said base. The steel component of the composite body is provided with a steel ring which is welded or otherwise appropriately joined during or after the extrusion step. The light metal sleeve can be welded or otherwise appropriately joined to light metal after impact extrusion. The production of a light metal shock absorber is a special case of plastic deformation of light metal and the principles which lead to metallic bonding between light metal and steel or another metal are also valid here.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.