A kind of non-ferrous metal surface treatment method

Abstract

The invention discloses a non-ferrous metal surface treatment method, which comprises the steps of heating and extruding an aluminum material to obtain a semi-finished product, and placing the product on a fixed frame; removing oil stains on the surface of the semi-finished product and cleaning the semi-finished product through the process of degreasing and water washing; The surface of the semi-finished product is treated with alkali etching, neutralization polishing and water washing; the semi-finished product is anodized, and then washed and cleaned; the semi-finished product is colored and washed; the colored semi-finished product is electrophoretic painted and washed; after dripping and curing Get aluminum products. The invention can effectively improve the surface quality of the aluminum profiles so that they have higher corrosion resistance, higher protective film strength and better metal appearance quality.

Description

technical field [0001] The invention relates to a metal surface processing method, in particular to a non-ferrous metal surface treatment method capable of producing "Curry series" aluminum materials with a high quality metal surface protective film. Background technique [0002] On the surface of many products, especially products that require high surface quality of aluminum metal product shells, the surface of the product is generally processed, and most of them are blackened. At present, there are two main ways to blacken products; one It is a blackening treatment on the surface of ordinary products, which is generally a chemical reaction under the condition of high temperature solution (alkali + ammonium nitrite + water), and its purpose is mainly to prevent rust; the other is anodic oxidation treatment, usually in sulfuric acid solution Electrolytic reaction occurs, which is mainly for products with high requirements on appearance and dimensional accuracy. The existin...

AI Technical Summary

Problems solved by technology

The existing surface treatment mainly includes normal temperature blackening treatment and ordinary anodic oxidation on the surface of ordinary products, and the disadvantage of the normal temperature blackening treatment process on the surface of ordinary products is that the film generated by electro-oxidation is only 0.01-0.15 microns, and the wear resistance is not good

The disadvantage of ordinary anodizing is that compared with optical black anodizing, the oxide film is wear-resistant, light-resistant, and light-resistant.

At present, when used in the manufacture of various metal products, due to the surface cleaning and pre-treatment of various chemicals before anodizing, such as alkali etching, etc., it is often difficult to clean up, resulting in residual liquid in the later stage affecting the quality of the later process and After the finished product, the residual liquid corrodes the product from the inside. Although the surface properties that can be achieved by the existing aluminum surface treatment process are relatively mature, under the condition of continuous improvement of the process, the requirements for life and industrial applications are getting higher and higher. , there is an urgent need for the emergence of an aluminum profile process with better surface properties

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