Brazing plate for brazing titanium alloy plate-fin radiator as well as preparation method and application of brazing plate

Abstract

The invention belongs to the technical field of brazing materials, and particularly relates to a brazing plate for brazing of a titanium alloy plate-fin radiator and a preparation method and application of the brazing plate. The brazing plate for brazing the titanium alloy plate-fin radiator comprises a core plate and bonding metal layers which are respectively compounded on two side plate surfaces of the core plate, a titanium-based amorphous brazing filler metal layer is compounded on the bonding metal layer; the core plate is a titanium plate; the bonding metal layer is made of Sn or SnAgCu soft solder. According to the brazing plate for brazing the titanium alloy plate-fin radiator, the Sn or SnAgCu soft brazing filler metal with the low melting point is selected as the bonding metal layer, the titanium-based amorphous brazing filler metal layer and the core plate are compounded to form the brazing plate, the cutting and bonding procedures of the titanium-based amorphous brazing filler metal can be omitted during brazing, efficiency is high, waste of the titanium-based amorphous brazing filler metal is avoided, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of brazing materials, and in particular relates to a brazing plate for brazing a titanium alloy plate-fin radiator and a preparation method and application thereof. Background technique [0002] Titanium and titanium alloys are often used to manufacture high-quality plate-fin radiators because of their advantages such as low density, high strength, corrosion resistance, fatigue resistance, and high specific strength. The core of the titanium alloy plate-fin radiator is mainly composed of fins, partitions, seals and side plates. A titanium alloy plate-fin radiator is composed of hundreds of fins and hundreds of partitions. Wherein, the thickness of the fins is generally 0.1-0.15 mm, and the material is one of TA1, TA2, and TA3. [0003] The structural materials that make up the titanium alloy plate-fin radiator are all titanium and titanium alloys, and the core body of the titanium alloy plate-fin radiator ...

AI Technical Summary

Problems solved by technology

The cutting and pasting process of titanium-based amorphous solder is complicated and time-consuming, resulting in low brazing efficiency; the price of titanium-based amorphous solder is relatively high, generally about 20,000 yuan / kg, and the solder has been used for many years. Second-time cutting will inevitably cause waste of brazing material due to human factors, resulting in increased brazing costs

[0004] At the same time, the titanium-based amorphous solder is pasted on the separator with an organic adhesive (such as 502 glue). During vacuum brazing, not only will it produce toxic gas, but also inevitably leave residues, which will affect the quality of the brazing connection.

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