Spot resistance welding method and welding electrode for implementing the method
US5229568A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1991 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Nov 25, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/256
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The subject of the present invention is a method of spot resistance welding at least two metal pieces (1, 2). The method consists in pressing the pieces (1, 2) between two electrodes (3, 4), in determining the overall resistance between the electrodes (3, 4), and the contact resistances of each electrode (3, 4) with the piece (1, 2) with which it is in contact, in calculating the contact resistance between the said pieces by the difference between the overall resistance and the sum of the resistances of each piece and of the piece-electrode contact resistances, in determining the actual intensity of the electric welding current, and in adjusting the various welding parameters for the said pieces (1, 2) in order to maintain a constant optimal intensity of the electric welding current. The subject of the present invention is also a welding electrode for implementing the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.