METHOD FOR MANUFACTURING ALUMINUM HEAT EXCHANGER

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing an aluminum heat exchanger which achieves the sufficient joinability of an aluminum member by Zn-based solder and can suppress the preferential corrosion of a junction and the occurrence and growth of pitting to the aluminum member in the manufacture of the aluminum heat exchanger joined by the Zn-based solder. SOLUTION: The aluminum heat exchanger is characterized in that the aluminum member is provided with a sacrificial anode layer of≥-300 mv to≤50 mv in potential difference from the Zn-based solder and that the aluminum member is joined by the Zn-based solder via the sacrificial anode layer. COPYRIGHT: (C)2008,JPO&INPIT