The main action of brazing flux is to get rid of the film oxide on the surface of brazed metals and liquid brazing filler metals , improve its wettability to the base metal , promote the filler metals' ability to fill rapidly the brazing clearance and flow widely along the braze .The flux's melting point and the lowest temperature is a little lower than the melting temperature of brazing filler metal . In brazing , the filler metal must be melted on time as possible after the flux is melted 0,rapidly fills the clearance so that the good braze can be formed .However , the gas hole , dregs or leak may be formed in the braze if the flux is too much or the filler metal can't melt on time .
二、 Product specifications
Flux
Brazing Alloys
Flux title
Working Temperature,℃
The state of flux
Use
JHL101(FB101)
Silver flux
550~850
Power or paste 250g,500g
Brazing Copper ,Copper alloy , steel and stainless steel with silver base filler metals
JHL102(FB102)
Silver flux
See above
See above
See above
JHL110
Specially made flux
See above
See above
Superior to FB102
JHL201(FB201)
Aluminum flux
450~620
See above
Brazing pure Aluminum, Aluminum alloy with Aluminum base filler metals
Flux Y-1
High-temperature Aluminum flux
See above
See above
Superior to FB201,suitable to oxyfuel gas welding
Flux Y-2
Middle-temperature Aluminum flux
440~550
See above
With Y-2 type of Zinc base filler metals
JHL3(RJ3)
Soldering flux
150~320
Liquid 250g,500g
Soldering Copper , Copper alloy with solders
JHL4(RJ11)
Soldering flux
150~350
Liquid 250g
Soldering Copper, Copper alloy, stainless steel with solders