Brazing method for aluminum alloy material
A technology of aluminum alloy material and brazing method, which is applied in the field of aluminum alloy welding, and can solve the problems of poor mass production and high flux cost
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[0012] A kind of brazing method of aluminum alloy material, uses the method for brazing of non-corrosive fluoride flux in inert gas atmosphere, when the starting flow temperature of solder is set as Tf, the starting flow temperature of flux is set as At Ts, the Tf is less than Ts, the difference is not more than 5 degrees; the brazing material and flux flow at the same time.
[0013] The weight percentage of magnesium in the aluminum alloy is 1.15%-1.35%. This is because when the Mg content is small, there is little reaction with the flux, and brazing can be performed even by conventional brazing methods. In addition, when the magnesium content is too large, it reacts rapidly with fluorine in the flux during brazing heating to form a high-melting point compound such as magnesium fluoride, thereby hindering brazing properties.
[0014] The difference between the solidus temperature and the liquidus temperature of the solder is within 30°C.
[0015] The difference between the ...
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