Method for forming structural parts
US4559797A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1985 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Jul 17, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D26/055
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Method for producing structures from metal workpieces which may or may not be capable of superplastic forming, such as titanium alloy and steel, using a forming die having a predetermined contour or shape and a cooperating pressure diaphragm formed of a metal capable of superplastic forming. Fluid pressure is applied to one side of the pressure diaphragm to cause stretching or expansion thereof by superplastic forming, and forcing the diaphragm against the workpiece, which in turn is caused to move or expand into contact with the forming die, to produce a structural component of predetermined shape. With the proper application of pressure, temperature and time, metal parts, e.g. 8 to 12 inches thick, can be formed in addition to parts formed from comparatively thin sheet metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.