A kind of preparation method and electroplating solution of brazing filler metal for aluminum alloy vacuum brazing

Abstract

The invention discloses a preparation method of a brazing filler metal for aluminum alloy vacuum braze welding and a plating solution. The brazing filler metal for the aluminum alloy vacuum braze welding is prepared by adopting an electro-deposition method, the preparation method of the brazing filler metal for the aluminum alloy vacuum braze welding comprises the following steps: 1) preparing the plating solution; 2) preparing an electrode; 3) implementing electro-deposition process; and 4) baking the brazing filler metal obtained by the electro-deposition method, the brazing filler metal is the brazing filler metal for the aluminum alloy vacuum braze welding. The brazing filler metal prepared by adopting the preparation method of the brazing filler metal for the aluminum alloy vacuum braze welding is directly adhered onto a workpiece to be welded, a soldering lug is not prepared separately during implementing the vacuum braze welding process, the shape of the soldering lug requires no design, welding and cutting are not required, soldering lug assembly is not required either, the cost of the vacuum braze welding is reduced greatly, the welding production time is shortened, and the process of welding production is simplified. The invention further discloses the plating solution applied to the preparation method of the brazing filler metal for the aluminum alloy vacuum braze welding.

Description

technical field [0001] The invention relates to a method for preparing solder, in particular to a method for preparing solder for aluminum alloy vacuum brazing and an electroplating solution used in the preparation method. Background technique [0002] Aluminum alloy vacuum brazing technology is widely used in the manufacture of electronic products, the manufacture of automobile radiators, and the preparation of some structural and functional parts of aerospace products. Existing vacuum brazing technologies all require special soldering sheets, and the effective connection of parts to be welded is realized by melting the soldering sheets during the welding process. The disadvantages of this process are as follows: the soldering sheet needs to be prefabricated, which increases the brazing production cycle and brazing cost; the soldering sheet needs to be cut and cleaned according to the shape of the surface to be welded of the part to be welded before use, resulting in a It ...

AI Technical Summary

Problems solved by technology

The disadvantages of this process are as follows: the soldering sheet needs to be prefabricated, which increases the brazing production cycle and brazing cost; the soldering sheet needs to be cut and cleaned according to the shape of the surface to be welded of the part to be welded before use, resulting in a It is cumbersome; the conventional soldering piece is thicker, the thickness is generally 0.1-0.15mm, and the excess solder during welding is easy to cause overflow and pollute the surface of the part

Images