Research Status and Developing Trend of Filler Metals for Brazing Al-alloy at Middle Temperature

The brazing filler metals for brazing Al-alloy at middle temperature are summarized,including Al-Si alloy,Sn-Zn alloy,Sn-Pb alloy,Cd-Zn alloy,Pb-Bi alloy and Zn-Al alloy.Through the comprehensive analysis and comparison of every brazing alloy,it can be found that Zn-Al alloy can be perfectly used as the brazing filler metals for brazing Al-alloy at middle temperature.