F - Mech Eng,Light,Heat,Weapons – 28 – F
Patent
F - Mech Eng,Light,Heat,Weapons
28
F
257/26
F28F 1/00 (2006.01) B32B 15/01 (2006.01) F28F 19/06 (2006.01) F28F 21/08 (2006.01)
Patent
CA 1164450
ABSTRACT OF THE DISCLOSURE A brazed aluminum heat exchanger comprises a combin- ation of a main component such as tube or shell which is fatal to the heat exchanger is damaged by corrosion and a subsidiary component such as a sacrificial anode clad layer or a fin which is less crucial even if damaged by corrosion. The heat exchanger is characterized in that said main component is made of an alloy comprising from 0.2 to 2.0% of Cu, optionally one or more metals selected from the group consisting of from 0.01 to 0.5% of Zn, from 0,05 to 0.5% of Mn and from 0,05 to 0.5% of Cr, and the rest being Al and impurities, and said subsidiary component is made of impurities, and said subsidiary component is made of an alloy selected from the group consisting of aluminum, Al-Mn and Al-Mg- Si alloys containing at most 0.2% of Cu. The brazed aluminum heat exchanger has a good corrosion resistance and is useful particularly as a tube for automobile radiators and heater cores.
381777
Fujimoto Hideo
Kaifu Masaharu
Nishimura Tomohiro
Takemoto Masao
Takigawa Jun
Kobe Steel Ltd.
Riches Mckenzie & Herbert Llp
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