Research Status and Development Trend of Fluoaluminate Flux

Nocolok brazing flux which is widely used in brazing aluminum and its alloy is a non-corrosive brazing flux.The melt point of this flux is 558 ℃,and the biggest disadvantage in brazing is the operation temperature(600 ℃) too high for most of the aluminum alloys.Therefore,the development of fluoaluminate flux as a extent of Nocolok are emphasized in detail and its present situation are also looked forward.