Aluminum alloy surface treatment method before injection molding

Abstract

The invention relates to the technical field of aluminum alloys, in particular to an aluminum alloy surface treatment method before injection molding. The aluminum alloy surface treatment method comprises the following steps that (1) a to-be-treated aluminum alloy workpiece is degreased, and the degreased aluminum alloy workpiece is washed with water; (2) the aluminum alloy workpiece is placed inabsolute ethyl alcohol, and washing is conducted with water; (3) the aluminum alloy workpiece is polished with a chemical polishing solution, acid pickling is conducted after polishing, and then washing is conducted with water; (4) anodic oxidation treatment is conducted on the aluminum alloy workpiece; and (5) the aluminum alloy workpiece is put into an etching solution for etching. The aluminumalloy surface treatment method is adopted for treating the aluminum alloy workpiece before injection molding, the treated aluminum alloy workpiece is good in appearance effect, the surface aluminum oxide film layer is provided with combination holes with excellent performance, the combination strength of aluminum alloy and resin after injection molding can be improved, the product yield and the product reliability can be improved, and the aluminum alloy surface treatment method is easy and convenient to operate, easy to control, high in production efficiency, stable in product quality and capable of reducing environmental pollution.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a surface treatment method for aluminum alloys before injection molding. Background technique [0002] With the development of society and the advancement of science and technology, aluminum alloys are increasingly being used in products such as smartphones, tablet computers, notebook computers, and automobiles; in actual production, aluminum alloys are often required to be injected. The composite body of aluminum alloy and resin is obtained; the surface treatment of aluminum alloy is required before injection molding. Adverse effects, after injection molding, the combination of aluminum alloy and resin is not high, which needs to be further improved. Contents of the invention [0003] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a method for surface treatment of aluminum alloy before injecti...

AI Technical Summary

Problems solved by technology

[0002] With the development of society and the advancement of science and technology, aluminum alloys are increasingly being used in products such as smartphones, tablet computers, notebook computers, and automobiles; in actual production, aluminum alloys are often required to be injected. The composite body of aluminum alloy and resin is obtained; the surface treatment of aluminum alloy is required before injection molding, but most of the existing surface treatment methods of aluminum alloy before injection molding are complex in process, causing great pollution to the environment and bringing harm to the subsequent injection molding. Adverse effects, the combination of aluminum alloy and resin after injection molding is not high, and needs to be further improved

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