Flux for Brazing - Chem Tech Korea

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(1) Al-Flux of the fluoridation


Classification	Key Constituent	M. P.(°C)	SolderingTemperature
Al-flux of the fluoridatio	KAlF₄ K₂AlF₆.H₂O	560∼575°C	580∼630°C


Feature & Use
-No need to clean after brazing because it is the fluoridation line -Has an excellent effect of corrosion prevention as the flux residue remains on the surface of Al. -Only need a small amount for brazing. Continuous mass production is possible. -Used as the remover of the Al2O3 oxidized film on the surface of Al, which is in the NB pipe of automobile air cleaning machinery components.

(2) Al-Flux of the chloride

※Physical property data of Cl-Flux


Classification	Key Constituent	M. P.(°C)	SolderingTemperature
Cl-Flux of the chloride	LiCl.ZnCl₂ KCl.NaF	380∼500°C	450∼590°C


Feature & Use
-Frequent use for torch welding, due to its low soldering temperature -Needs the process of cleaning the CI constituent after work

(3) LOW M. P. Al-FLUX


Classification	Key Constituent	M. P.(°C)	Soldering Temperature	Feature & Use
Low-M. P. Al-Flux	K, Al, F, Cs	400∼500°C	450∼550°C	-The fluoridation line. Low soldering temperature. Possible to use is as torch welding flux. Need no process of cleaning after work. Corrosion resistance function as the surface film of flux is created.

(4) Al-FLUX for Dip-Brazing

※Physical property data of Dip-Brazing Flux


Classification	Key Constituent	M. P.(°C)	Soldering Temperature	Feature & Use
DIP-BRAZING Flux	Li, K, Na, Cl, Al, F	537°C	560∼650°C	-This is a product made of the flux combination of the fluoridation and chloride lines with additive. Its melting point is low, and its flowability is excellent. Therefore, an even brazed product can be manufactured when it is processed in the melting pot whose temperature is consistently maintained in a certain level within the heating furnace. -Its flowability is excellent in the welding and brazing of corrosion-resistant high -strength aluminum alloys. -Most suitable for the welding and brazing of the components that especially require intensity and internal pressure, or precision components.