Title:
METHOD FOR BRAZING AND BRAZED STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2005/061167
Kind Code:
A1
Abstract:
[PROBLEMS] To provide a method for brazing which can provide a brazed zone having excellent corrosion resistance and a brazed structure being excellent in the corrosion resistance of a brazed zone. [MEANS FOR SOLVING PROBLEMS] A method for brazing which comprises providing a first member (1) to be joined and a second member (2) to be joined wherein a diffusion inhibiting layer (13) comprised of a Ni-Cr alloy containing 15 to 40 % of Cr as an essential component is laminated on a base steel sheet (12), assembling a temporary assembly wherein the second member (2) to be joined is arranged on the above diffusion inhibiting layer (13) side of the first member (1) to be joined via a brazing material (14) of a Cu-Ni alloy containing 10 to 20 % of Ni as an essential component, holding the temporary assembly at a temperature of 1200&ring C or higher, to thereby melt the brazing material (14) and form a brazed zone (6) comprising the molten brazing material and Ni atoms and Cr atoms from the above diffusion inhibiting layer (13) being diffused therein, and solidifying the brazed zone (6) by itself by elevating the melting point of the brazing material in the above brazed zone (6) through the increase of the contents of Ni and Cr, followed by cooling.
Inventors:
HASEGAWA TSUYOSHI (JP)
ISHIO MASAAKI (JP)
KAJIKAWA SHUNJI (JP)
SAKAMOTO YOSHITSUGU (JP)
HAYASHI TAKAYUKI (JP)
ISHIO MASAAKI (JP)
KAJIKAWA SHUNJI (JP)
SAKAMOTO YOSHITSUGU (JP)
HAYASHI TAKAYUKI (JP)
Application Number:
PCT/JP2004/019197
Publication Date:
July 07, 2005
Filing Date:
December 22, 2004
Export Citation:
Assignee:
NEOMAX MATERIALS CO LTD (JP)
DENSO CORP (JP)
HASEGAWA TSUYOSHI (JP)
ISHIO MASAAKI (JP)
KAJIKAWA SHUNJI (JP)
SAKAMOTO YOSHITSUGU (JP)
HAYASHI TAKAYUKI (JP)
DENSO CORP (JP)
HASEGAWA TSUYOSHI (JP)
ISHIO MASAAKI (JP)
KAJIKAWA SHUNJI (JP)
SAKAMOTO YOSHITSUGU (JP)
HAYASHI TAKAYUKI (JP)
International Classes:
B23K1/00; B23K1/19; B23K35/00; F28D1/03; F28F3/02; F28F21/08; B23K35/30; (IPC1-7): B23K1/19; B23K1/20
Foreign References:
| JP3350667B2 | 2002-11-25 | |||
| JP2003145290A | 2003-05-20 |
Attorney, Agent or Firm:
Honda, Tatsuo (Shin-Osaka Maru Bldg. Shinkan 6F 18-27,
Higashinakajima 1-chome, Higashiyodogawa-k, Osaka-shi Osaka 33, JP)
Download PDF: