Heat exchanger made of aluminum alloys and tube material for the

Details Heat exchanger made of aluminum alloys and tube material for the Heat exchanger made of aluminum alloys and tube material for the

1981-09-24

1983-10-18

Richter, Sheldon J.

Heat exchange

With protector or protective agent

165180, F28F 1906

Patent

active

044100361

ABSTRACT:
A heat exchanger made of aluminum alloys comprising a tube made of an aluminum alloy consisting of 0.2 to 1.0 wt % of Cu and the balance Al and inevitable impurities, and fins jointed to the tube, at least a portion of each fin being formed from another aluminum alloy exhibiting and electrochemical potential value lower than that of the aluminum alloy from which the tube is made, so as to provide a sacrificial corrosion effect. Disclosed also is an aluminum alloy material having superior hot-extrusion characteristics and pitting corrosion resistance suitable for use as the material of heat exchanger tubes, the aluminum alloy material consisting of 0.2 to 1.0 wt % of Cu and the balance Al and inevitable impurities.

REFERENCES:
patent: 1662383 (1928-03-01), Grimditch et al.
patent: 3809155 (1974-05-01), Anthony et al.
patent: 3928027 (1975-12-01), Harkness
patent: 3960208 (1976-06-01), Anthony et al.
patent: 4192693 (1980-03-01), Chia et al.
patent: 4203490 (1980-05-01), Terai et al.
patent: 4209059 (1980-06-01), Anthony et al.
patent: 4224065 (1980-09-01), Jaquet et al.

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