Concurrent friction/joule heating weld process
US5165589A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Jun 20, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K20/121
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In order to control the cooldown temperature of a weld produced by a friction welding process, an electrical signal having a low voltage and a high current is passed through the weld thereby providing desired metallurgical properties. The weld acts as a resistor due to its high temperature as compared to the surrounding material such that the current causes the weld to heat up when the current passes through the weld and also causes the electrical signal to change as it passes through the weld. The change in current can be measured and the temperature of the weld can be controlled which allows the cooldown of the weld to be properly maintained for the desired metallurgical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.