Method for braze flux application
US6036083A · kind A · utility
10Cited by
15References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1998 |
| Grant date | Mar 14, 2000 |
| Priority date | — |
| Expiry date | Jan 26, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K1/203
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The forming oil degreasing step and flux coating step are reversed as part of a basic fluxed heat exchanger brazing process. This allows the fluxed parts to be thermally degreased concurrently with the braze oven workpiece preheat process, eliminating a separate degrease step and apparatus entirely. Surprisingly, and contrary to all teaching as to electrostatic dry power coating, powdered flux was found to electrostatically bond to an oily surface as well as, or even better than, an oil free surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.