Manufacturing method for surface-treated aluminum material

Abstract

The invention belongs to the technical field of surface treatment of aluminum materials, and particularly discloses a manufacturing method for a surface-treated aluminum material. The method includesthe following steps that a punch-formed aluminum material is placed into polishing equipment for mechanical polishing, and a mirror surface effect is achieved; the aluminum material is soaked in a sulfuric acid solution; an etching reaction is performed on the deoiled aluminum material by the aid of a strong alkaline solution, and the aluminum material is washed by the aid of clear water; the aluminum material treated in S3 is dried at the temperature of 35 DEG C, and after silver oxide powder is evenly sprayed, soft cloth dipped with kerosene is used for wiping the aluminum material sprayed with the silver oxide powder; after the surface of the aluminum material is pretreated, the surface of the aluminum material is cleaned through oil removal and alkaline etching, pollutants such as grease, dust and the like on the surface of the aluminum material can be eliminated through oil removal, and subsequent alkaline washing is relatively uniform, so that the quality of an anodic oxide filmis improved; and in addition, silver oxide and kerosene are used for treatment after alkaline etching and before anodic oxidation treatment, so that the uniformity of subsequent dyeing treatment and the firmness of dye bonding can be improved.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of aluminum materials, and in particular relates to a method for manufacturing surface-treated aluminum materials. Background technique [0002] Aluminum products are very common in life, and are one of the more common products in industry and hardware accessories. Aluminum products are made of aluminum and other alloying elements. It is usually processed into castings, forgings, foils, plates, strips, tubes, rods, profiles, etc., and then processed by cold bending, sawing, drilling, assembling, and coloring. The main metal element is aluminum, and some alloy elements are added to improve the performance of the aluminum material. In order to increase the corrosion resistance and mechanical properties of the aluminum material surface, aluminum profiles need to be subjected to various surface treatments after extrusion. Surface treatment of aluminum parts There are mainly metal electropla...

AI Technical Summary

Problems solved by technology

[0003] China Patent Network has proposed a method of surface treatment of aluminum alloy and its products (publication number CN103253072B4). This patent proposes a method of surface treatment of aluminum materials that makes the surface of the product have both mirror effect and sandblasting effect after treatment. However, This method requires multiple times of anodizing the aluminum material. During the anodizing process, the aluminum material is easily mixed with oil or water to cause shrinkage defects on the surface of the aluminum profile, which affects the hardness, impact resistance, bending resistance and other physical properties of the aluminum profile. performance and chemical resistance