Welding ring containing brazing flux for welding aluminum and aluminum alloy and manufacturing method thereof
A welding ring and flux technology, which is applied in welding equipment, welding medium, metal processing equipment, etc., can solve the problems of poor welding, flux falling off, and flux easy to be affected by moisture, etc., and achieves convenient welding, good activity, and high joint strength Effect
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Embodiment 1
[0023] A flux-containing welding ring for welding aluminum and its alloys, the welding ring is a seamless ring, and the preparation steps of the seamless ring-shaped welding ring are as follows:
[0024] A), buy mass percentage Al:80% in the alloy powder sold in the market; dry and ready for use;
[0025] B), purchased K with a particle size of -20+40 3 AlF 6 -KAIF 4 Eutectic salt brazing flux, ready for use after drying;
[0026] C), the corresponding proportioning mass percentage is: ZnF 2 : 50%; K 2 GeF 6 : 50% of the surfactant is uniformly mixed, pulverized, and sieved to obtain a powder with a particle size of -20+40, which is dried and used for subsequent use;
[0027] D), uniformly mix the systems prepared in steps A, B, and C according to the ratio of 80:19:1, and then vacuum pack them for later use;
[0028] E) Put the prepared solder powder system into a vacuum high-temperature furnace, and sinter at 420-540°C for 30 minutes in a vacuum state to fully melt. ...
Embodiment 2
[0032] A flux-containing welding ring for welding aluminum and its alloys, the welding ring is a seamless ring, and the preparation steps of the seamless ring-shaped welding ring are as follows:
[0033] A), buy mass percent Al: 56% in the alloy powder sold on the market; Si: 14%; Cu: 3%; Zn: 26%; Ag: the powder of 1% alloy system, the granularity of powder should reach- 40+100μm, dried for later use;
[0034] B), purchased K with a particle size of -20+40 3 AlF 6 -KAIF 4 Eutectic salt brazing flux, ready for use after drying;
[0035] C), the corresponding proportioning mass percentage is: ZnF 2 : 40%; K 2 GeF 6 : 20%; SnF 2 : 40% surfactants are evenly mixed, pulverized, and sieved to obtain a powder with a particle size of -20+40, which is dried and used for subsequent use;
[0036] D), uniformly mix the systems prepared in steps A, B, and C according to the ratio of 80:18:2, and then vacuum pack them for later use;
[0037] E) Put the prepared solder powder system...
Embodiment 3
[0041] A flux-containing welding ring for welding aluminum and its alloys, the welding ring is a seamless ring, and the preparation steps of the seamless ring-shaped welding ring are as follows:
[0042] A), buy mass percentage Al: 87% in the alloy powder sold on the market; Si: 11%; Cu: 1%; Zn: 0.9%; Ce: the powder of 0.1% alloy system, the particle size of powder should reach- 40+100μm, dried for later use;
[0043] B), purchased K with a particle size of -20+40 3 AlF 6 -KAIF 4 Eutectic salt brazing flux, ready for use after drying;
[0044] C), the corresponding proportioning mass percentage is: ZnF 2 : 40%; K 2 SiF 6 : 60% of the surfactant is evenly mixed, pulverized, and sieved to obtain a powder with a particle size of -20+40, which is dried and used for later use;
[0045] D), uniformly mix the systems prepared in steps A, B, and C according to the ratio of 77:22:1, and then vacuum pack them for later use;
[0046] E) Put the prepared solder powder system into ...
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