Method for determining shape changes of a workpiece
US8215143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2011 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Apr 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method for determining shape changes of a workpiece made of steel or a steel alloy due to forming, in which a varnish is applied to the workpiece, the workpiece is formed and then an optical shape change analysis is carried out by measuring the applied varnish. The object of providing a method for determining shape changes of a workpiece made of steel or a steel alloy, said method also being suitable for analyzing the shape change of a workpiece after hot forming, is solved according to the teaching of the present invention in that before the forming of the workpiece a varnish with an Al proportion of more than 30% by weight is applied to the workpiece, the workpiece is heated for forming to a hot forming temperature and the workpiece is cooled after or during the forming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.