Composite solder flux-cored aluminum welding wire and preparation method thereof
A technology of flux-cored aluminum welding wire and composite solder, which is applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of inability to prepare solder and difficult brazing, and achieve short alloying time and low melting point of solder , good wettability and fluidity
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[0034] Example 1
[0035] The metal composite brazing filler metal flux-cored aluminum welding wire in this embodiment has a metal composite brazing filler metal, such as image 3 As shown, the aluminum alloy layer 1 is 4045 aluminum alloy, and the copper layer 2 is Cu.
[0036] The preparation method is:
[0037] According to the thickness ratio of 4045: Cu: 4045=5:1:5, 4045 aluminum alloy, copper and 4045 aluminum alloy are rolled into composite strip through a rolling mill; the composite strip is thinned to 0.3~0.6mm, and the strip width is 9 ~12mm; the prepared composite strip is rolled into a U shape through a rolling mill; the U-shaped composite strip is added with a core and then rolled into an O shape; reduced to a diameter of 2.4 to 3.0mm; continued to reduce the diameter to make Composite solder flux cored aluminum welding wire with a diameter of 1.0~3.0mm. Among them, Cu accounts for 24.8% of the total weight of the solder, Si accounts for 8.5% of the total weight of the...
Example Embodiment
[0038] Example 2
[0039] The metal composite brazing filler metal flux-cored aluminum welding wire in this embodiment has a metal composite brazing filler metal, such as figure 2 As shown, the aluminum alloy layer 1 is an Al-Si-Zn alloy, and the copper layer 2 is Cu. According to the thickness ratio of aluminum alloy layer: copper layer=50:1, the Al-Si-Zn alloy and Cu are rolled into a composite strip through a rolling mill; the composite strip is thinned to 0.3~0.6mm, and the strip width is 9~ 12mm; the prepared composite strip is rolled into a U-shape through a rolling mill; after adding a drug core to the U-shaped composite strip, it is rolled into an O-shape; the diameter is reduced to a diameter of 2.4~3.0mm; the diameter is continued to be reduced It is 1.0~3.0mm composite solder flux cored aluminum welding wire. Among them, Cu accounts for 5% of the total weight of the solder, Si accounts for 10% of the total weight of the solder, Zn accounts for 6% of the total weight ...
Example Embodiment
[0040] Example 3
[0041] The metal composite brazing filler metal flux-cored aluminum welding wire in this embodiment has a metal composite brazing filler metal, such as figure 2 As shown, the aluminum alloy layer 1 is an Al-Si-Zn alloy, and the copper layer 2 is Cu. According to the thickness ratio of aluminum alloy layer: copper layer=13:1, the Al-Si-Zn alloy and Cu are rolled into a composite strip through a rolling mill; the composite strip is thinned to 0.3~0.6mm, and the strip width is 9~ 12mm; the prepared composite strip is rolled into a U-shape through a rolling mill; after adding a drug core to the U-shaped composite strip, it is rolled into an O-shape; the diameter is reduced to a diameter of 2.4~3.0mm; the diameter is continued to be reduced It is 1.0~3.0mm composite solder flux cored aluminum welding wire. Among them, Cu accounts for 20% of the total weight of the solder, Si accounts for 10% of the total weight of the solder, Zn accounts for 5% of the total weight...
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