F - Mech Eng,Light,Heat,Weapons – 28 – F
Patent
F - Mech Eng,Light,Heat,Weapons
28
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F28F 7/00 (2006.01) B23K 1/00 (2006.01) B23K 35/34 (2006.01) B23K 35/36 (2006.01) F28D 1/047 (2006.01) F28F 1/32 (2006.01) F28F 21/08 (2006.01)
Patent
CA 1220194
- 1 - Abstract: There is disclosed a heat exchanger and a method of manufacturing a heat exchanger of brazed metal members made mainly of Al or Al alloy. At least one of the brazed metal members is made of a brazing sheet clad with brazing material. The brazed portions of the metal members or the whole surface of the heat exchanger are coated with a corrosion-resistant fluoride flux consisting essentially of 25-40% KF, 38-54% AlF3 and 3-30% ZnF2 by weight, which flux forms a corrosion-inhibiting metallic film. The result is a more durable product and improved maintenance of good heat conductivity.
457830
Funamoto Takao
Haramaki Takashi
Kokura Satoshi
Shiota Katsuhiko
Tomita Akira
Hitachi Ltd.
Kirby Eades Gale Baker
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