Method and device for determining the temperature at a spot-welded joint and a method for assessing the quality of a spot-welded joint
US5399827A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1994 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Jan 13, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/25
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The temperature is determined at a spot weld. The spot weld is between parts to be welded to one another. The parts are formed of a first metal and the spot weld is made with an electrode of a second metal placed in contact with the parts. The thermoelectric voltage between parts and the electrode is measured and the temperature is determined from the thermoelectric voltage measured in the measuring step. A device for determining the temperature includes a voltmeter connected between the parts to be welded and the electrode. The temperture determination is utilized in assessing the quality of spot-welded joints in automated manufacture, for example in the automobile industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.