Title:
BRAZING SHEET FOR FLUX-FREE BRAZING, FLUX-FREE BRAZING METHOD AND METHOD FOR PRODUCING HEAT EXCHANGER
Document Type and Number:
WIPO Patent Application WO/2017/221674
Kind Code:
A1
Abstract:
A brazing sheet for flux-free brazing, which is characterized in that an outermost brazing material layer that is formed of an Al-Si system alloy containing 4-12% by mass of Si and an intermediate brazing material layer that is formed of an Al-Si-Mg system alloy containing 1% by mass or more but less than 4% by mass of Si and 0.1-5.0% by mass of Mg are clad on one surface or both surfaces of a core material. Bonding of aluminum members is carried out with use of this brazing sheet in a non-oxidizing gas atmosphere having an oxygen concentration of 300 ppm or less at atmospheric pressure without using a flux.
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Inventors:
MIYAKE HIDEYUKI (JP)
Application Number:
PCT/JP2017/020770
Publication Date:
December 28, 2017
Filing Date:
June 05, 2017
Export Citation:
Assignee:
MITSUBISHI ALUMINIUM (JP)
International Classes:
B23K35/28; B23K1/19; B32B15/20; C22C21/00; B23K101/14; B23K103/10
Domestic Patent References:
| WO2013180630A1 | 2013-12-05 | |||
| WO2003028946A1 | 2003-04-10 |
Foreign References:
| JP2014155955A | 2014-08-28 | |||
| JP2013086103A | 2013-05-13 | |||
| JP2014037576A | 2014-02-27 | |||
| JP4547032B1 | 2010-09-22 |
Other References:
See also references of EP 3459676A4
Attorney, Agent or Firm:
YOKOI Koki (JP)
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