Flux powder should be mixed with water and a few drops of liquid detergent to form a thick paste. Paste should then be brushed onto the joint surfaces before assembly. Further flux should then be applied externally either side of the joint mouth. This ensures that the joint surfaces are well protected from oxidation at the earliest possible point of the brazing operation. This high level of fluidity also helps to reduce flux voids / entrapment in the joint, the low viscosity of the flux aiding its displacement by the brazing filler metal from the joint gap. Easy-floTM Flux Powder has a working range of 550-800?C. It is suitable for use with silver brazing filler metals melting below 750?C
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