Brazing sheet for flux-free brazing, method for flux-free brazing and method for producing heat exchanger
US10898963B2 · kind B2 · utility
5Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2017 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Jun 5, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Brazing sheet for flux-free brazing, wherein an outermost surface brazing filler metal layer, consisting of an Al—Si-based alloy containing 4 to 12% Si in mass %, and an intermediate brazing filler metal layer, consisting of an Al—Si—Mg-based alloy containing 1% or more and less than 4% Si and 0.1 to 5.0% Mg in mass %, are cladded on one side or both sides of a core material, and wherein aluminum members are joined to each other without using flux in a non-oxidizing gas atmosphere under normal pressure with an oxygen concentration of 300 ppm or less, using the brazing sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.