Brazing flux without corrosion for aluminum and aluminum alloy brazing
An aluminum alloy, non-corrosion technology, applied in welding media, welding equipment, metal processing equipment and other directions, can solve problems such as in-depth research on practical applications, and achieve the effect of simple preparation process and low cost
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[0008] The brazing flux of the present invention, in terms of mass percentage in Table 1, takes analytically pure cesium fluoride, aluminum fluoride, potassium fluoride, tin fluoride, zinc fluoride and lithium fluoride, fully grinds in proportion, mixes Evenly, through a 100-mesh sieve, the resulting white dry powder is the brazing flux of the present invention. Cooperate the zinc-aluminum solder of 70: 30, embodiment 1~4 flame brazing aluminum alloy 4047-aluminum alloy 6063; Brazing aluminum alloy 2117-aluminum alloy 4047 in the air furnace of embodiment 5~7, brazing temperature is 540~ 550°C, the measured shear strength is listed in Table 1.
[0009] Table 1
[0010] Reality
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