Brazing agent and a brazing sheet both comprising an aluminum alloy containing a flux
US5547517A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1994 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Jul 18, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/0244
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A brazing agent consists essentially of a compacted powder mixture of an aluminum-silicon alloy and a flux, the agent having an apparent density of 90% or more of a theoretical density. Si is contained at about 3-15% by weight of all the elements other than the flux, so that the ratio in weight of all the elements to the flux is from 99.9:0.1 to 70:30. The brazing agent may further contain one or more elements selected from a group consisting of zinc, tin and indium, at about 0.1-5%, 0.01-0.5% and 0.01-0.5% by weight of all the elements other than the flux, respectively. A brazing sheet may be of such a structure that a core sheet made of aluminum or its alloy has at least one surface clad with a skin layer which has a thickness of 10 .mu.m or more for each surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.