Method for superplastic forming
US4233831A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1978 |
| Grant date | Nov 18, 1980 |
| Priority date | — |
| Expiry date | Feb 6, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S72/709
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method is provided for controlling the strain rate during superplastic forming of a blank of material into a part. The method produces a part in a minimum time by deforming the material under suitable-optimum superplastic conditions. A relationship is determined between time and the pressure required to form the blank against the configured surface of a die at a strain rate which causes the blank to flow superplastically. The blank is positioned in the die and held at a temperature at which the material exhibits superplasticity. Pressure is applied to the blank in accordance with the previously determined relationship between time and pressure until the part is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.