Brazing Of Low Carbon Steel Automotive Radiator Pipe Using Of Cu-Zn Alloy

In order to join the automotive radiator pipe with high-quality and high-efficiency, flame and induction brazing experiments of steel radiator were carried out using Cu-Zn alloy. Results show that Cu-Zn brazing filler metal can wet the steel well under different heating conditions. The average tensile-shear strength of the brazed joints was more than 400MPa. Brazing experiments of automotive radiator pipe were carried out for comparing the heating methods. Results show that the joints acquired by the induction brazing method were much better in the appearance, further; the amounts of brazing alloy were relatively less. Brazed radiator pipes were then electroplated, and sealability tests of the brazed pipe were investigated, which indicated the pipes and joints remained in good condition after the tests.