Method for controlling brazing
US7084366B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2004 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Jul 4, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K1/0004
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for making a braze joint across a discontinuity in a work piece using alternating current. A filler metal is pre-placed at a location sufficiently close to the discontinuity such that, when an alternating current is applied across a work piece to heat the work piece and melt the filler metal, the filler metal is drawn into the discontinuity. The alternating current is maintained for a set residence time, generally less than 10 seconds and more particularly less than 3 seconds. The alternating current is then altered, generally by reducing the current and/or voltage such that the filler metal can solidify to form a braze joint of desired quality and thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.