Preparation method of aluminum alloy material for flux-free gas-shielded brazing

Abstract

The invention relates to a preparation method of an aluminum alloy material for flux-free gas-shielded brazing. The preparation method is characterized by comprising the following steps: (1) burdening; (2) casting; (3) face milling; (4) hot rolling; (5) cold rolling; (6) primary intermediate annealing; (7) cold finish rolling; (8) secondary intermediate annealing; (9) foil rolling; (10) slitting; and (11) packaging. The size of a product is ensured to meet the requirements through the rolling processes of hot rolling, cold rolling, cold finish rolling and foil rolling in sequence, and meanwhile the heat dissipation performance of the product is further improved. Thus, the weldment connecting performance can be effectively achieved in the gas-shielded brazing process, then the brazing quality is ensured, and therefore the quality of finished products is further improved. Castings are conveyed into a three-dimensional scanning workshop, and a three-dimensional actual model for each casting is generated and compared with a three-dimensional preset model preset in a center console, so that the subsequent face milling process is determined according to different comparison results, and the face milling precision and the face milling efficiency are further improved.

Description

technical field [0001] The invention relates to the technical field of aluminum products, in particular to a method for preparing an aluminum alloy material used for flux-free gas shielded brazing. Background technique [0002] Gas-shielded brazing is the use of inert gas as a protective atmosphere to melt low-melting-point metals at a certain temperature, and to connect metals with high melting points that are in contact with each other after cooling down and solidifying. It is called gas-shielded brazing. In the prior art, when welding workpieces such as aluminum coils and plates made of aluminum alloy, the welding method of gas shielded brazing is often used, and a large amount of heat will be generated during the brazing process. High requirements, aluminum alloy materials that do not meet the corresponding heat dissipation performance parameters not only affect the connection strength after brazing but also affect the quality of the formed product. Contents of the inv...

AI Technical Summary

Problems solved by technology

In the prior art, when welding workpieces such as aluminum coils and plates made of aluminum alloy, the welding method of gas shielded brazing is often used, and a large amount of heat will be generated during the brazing process. High requirements, aluminum alloy materials that do not meet the corresponding heat dissipation performance parameters not only affect the connection strength after brazing but also affect the quality of the formed product

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