Flux is a chemical compound applied to the joint surfaces before brazing. Its use is essential in the brazing process. The reason? Heating a metal surface accelerates the formation of oxides, the result of chemical combination between the hot metal and oxygen in the air. These oxides must be prevented from forming or they'll inhibit the brazing filler metal from wetting and bonding to the surfaces. A coating of flux on the joint area, however, will shield the surfaces from the air, preventing oxide formation.
Watch Brazing Fundamental #4: Proper Fixturing: • Fundamentals of Brazin...
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12 июл 2017
