General Brazing Flux

​Flux has lower melting point than brazing filler metal, good surface activity. It can break or dissolve metallic oxides on the surface of work and brazing alloys during the process, which is good for the liquid brazing alloy wetting the surfaces to permit adequate migration of the filler metal in order to get good quality joint.

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Details

General brazing flux


Form

Reference

Temperature applicable /?

Paste brazing flux

FB105G

550~850

fluid-paste brazing flux

QJ501Y

650~850

fluid-paste brazing flux/ Gas booster flux

QJ403

>450


Flux has lower melting point than brazing filler metal, good surface activity. It can break or dissolve metallic oxides on the surface of work and brazing alloys during the process, which is good for the liquid brazing alloy wetting the surfaces to permit adequate migration of the filler metal in order to get good quality joint. Flux is used in most of cases. It is widely applied in brazing of copper-based and silver filler metals.


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