COATED HEAT-EXCHANGER TUBE, METHOD FOR MANUFACTURING A HEAT-EXCHANGER, AND SOLDER PASTE USED FOR COATING ON THE HEAT-EXCHANGER TUBE

摘要

A heat-exchanger tube comprises a tube main body that is composed of an aluminum alloy and a coating applied onto a surface of the tube main body. The coating contains a powder mixture-which includes: 1 g/m 2 or more and 7 g/m 2 or less of an Si powder, 0.2 g/m 2 or more and 4.0 g/m 2 or less of a Zn powder, 0.5 g/m 2 or more and 5.0 g/m 2 or less of a first flux powder composed of a compound that contains Zn, and 5 g/m 2 or more and 20 g/m 2 or less of a second flux powder composed of a compound that does not contain Zn -and a binder. The total amount of the powder mixture in the coating is 30 g/m 2 or less. The proportion of the binder in the coating is 5-40 mass%.