Al-Si-Cu-Zn low-melting-point aluminum-based brazing filler metal and preparing method of Al-Si-Cu-Zn low-melting-point aluminum-based brazing filler metal

Abstract

The invention belongs to the field of welding materials, and discloses Al-Si-Cu-Zn low-melting-point aluminum-based brazing filler metal and a preparing method of the Al-Si-Cu-Zn low-melting-point aluminum-based brazing filler metal. The Al-Si-Cu-Zn low-melting-point aluminum-based brazing filler metal comprises, by mass, 3.50%-4.50% of silicone, 15%-23% of copper, 10%-24% of zinc, 0.80%-1.20% of manganese, 0.80%-1.20% of magnesium, 0.02%-0.08% of strontium and the balance aluminum. Dosing is carried out according to the component contents, then the components are melted in a specific sequence and refined through hexachloroethane two times to carry out casting to obtain an alloy blank, and finally hot rolling is carried out on the alloy blank multiple times to obtain the foil-shaped aluminum-based brazing filler metal. The Al-Si-Cu-Zn low-melting-point aluminum-based brazing filler metal has the advantages of being low in melting point, excellent in brazing technology performance and low in cost, can be widely used for aluminum-based materials, and can be particularly used for brazing Al-Mn alloy materials.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for better control over how well molten tin plugs are made during bonding between different materials such as metals or ceramics without causing any damage from high temperatures. It also improves upon existing methods that use expensive fluxes like lead (Pb) due to its higher melting points at these temperatures compared to pure gold). Additionally, this new method uses an improved type called manganese oxide instead of Pt but still maintains excellent wettability on both copper surfaces and other similar substrates. Overall, this innovation provides technical benefits that make joining dissimilar material structures more efficient than current techniques while reducing costs associated therewith.

Problems solved by technology

This patented technical problem addressed in this patents relating to developing new types of alanium based solubility enhancer(solarbide) type solars called BMALSAGa, which allows for better joining between various bases without requiring much energy input during fabrication processes like casting. Additionally, there needs to find ways to create these solders while maintaining certain physical features like cohering bonding property, flow ability, and mechanical work function.