In this paper, a new kind of soldering technique, namely, chemical Heat-treatment sol-dering process (CHSP) is introduced.

This article, to proceed from the actual brazing quality of car air-conditioning condenser, combined with Brazing mechanism, studied on the "fin-erosion" phenomenon after brazed in detail.

So the heat input should be kept low to weld galvanization steel sheet. In this paper the MIG welding machine is adopted with special sold…