Moisture absorption resisting aluminum alloy slit flux-cored wire and manufacturing method thereof

Abstract

The invention relates to a moisture absorption resisting aluminum alloy slit flux-cored wire and a manufacturing method thereof. An alloy belt is used as the outer skin of the flux-cored wire, wherein the component of the flux-cored wire contains 5 to 90 wt.% of CsAlF4, 5 to 90 wt.% of Cs3AlF6, 1 to 45 wt.% of KALF4, 1 to 45 wt.% of K3AlF6, 0.001 to 2.0 wt.% of aluminum powder, 0.001 to 2.0 wt.% of silicon powder and 0.001 to 2.0 wt.% of Al-Mg alloy. By using the aluminum alloy belt sold on the market, based on the optimized proportion of the flux-cored wire component, the slit flux-cored wire is sewn as the slit having a stair so as to match with the edge of the flux-cored wire, thereby efficiently preventing water and other chemical materials from entering into the flux-cored wire through the slit and ensuring excellent moisture absorption resisting property. The flux-cored wire adopts torch soldering, induction brazing and furnace brazing to solder aluminum-aluminum alloy, aluminum-copper alloy and aluminum alloy-copper alloy. The slit metal not only has higher strength and air impermeability but also has excellent spreading property and permeating property.

Description

technical field [0001] The invention relates to the field of welding in material processing engineering, in particular to an aluminum alloy seamed flux-cored welding wire with moisture absorption resistance and a manufacturing method thereof. Background technique [0002] At present, the manufacturing process of flux-cored welding wire at home and abroad is mainly divided into two types: "seamless" and "seamed". The manufacturing process of "seamless" flux-cored welding wire is usually to fill the alloy tube with flux (that is, the flux core), and then undergo pickling, heat treatment, drawing and other processes to finally complete the manufacture of welding wire; The manufacturing process of the cored wire usually adopts a steel strip with a width of 8-10mm and a thickness of 0.3-0.4mm, which is first rolled into a U shape, and then added to the U-shaped groove with a particle size of over 60-80 mesh (metal The powder can pass through a sieve of 60 meshes, the mineral pow...

AI Technical Summary

Problems solved by technology

[0004]Due to the high production cost and large investment of "seamless" flux-cored welding wire, "seamed" flux-cored welding wire products are easy to absorb moisture, so whether it is "seamless" , "Seamed" flux-cored welding wire, there are still many technical difficulties that have not been resolved, and new research results are urgently needed to improve and supplement

So far, there have been no reports on improving the shape of the flux-cored wire and improving the moisture absorption resistance. Patent US 5,781,846 and patent US 6,830,632B1 do not involve the content of the mold in the flux-cored wire forming. This invention "anti- Hygroscopic aluminum alloy seamed flux-cored welding wire and its manufacturing method" is completed under this technical background

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