Method for anodizing aluminum pendants

Abstract

The invention discloses a method for anodizing aluminum pendants. The method is characterized in that: anodizing bath solution is used as a degreasing agent; a first rinsing step for alkaline degreasing is arranged between a degreasing rinsing step and an alkaline degreasing step. The method comprises the following process steps of: degreasing, performing degreasing rinsing, performing alkaline degreasing rinsing 1, performing alkaline degreasing, performing alkaline degreasing rinsing 2, performing bright dipping, performing bright dipping rinsing 1, performing bright dipping rinsing 2, anodizing, performing oxidation rinsing 1, performing oxidation rinsing 2, performing electrolytic coloring, performing coloring rinsing 1, performing coloring rinsing 2, performing coloring rinsing 3, performing coloring rinsing 4, performing electrophoresis, performing electrophoresis rinsing 1, performing electrophoresis rinsing 2, sealing, performing sealing rinsing, air-drying and curing to obtain anodized electrolytic colored electrophoresis aluminum pendants, anodized electrolytic colored aluminum pendants, anodized electrophoresis aluminum pendants or the anodized aluminum pendants. By themethod, the problem that the process parameters of alkaline degreasing baths are greatly fluctuated due to the influence of the particularity of an alkaline degreasing process is solved, and the influence of the aluminum incensement of anodizing baths on the oxidation quality of the aluminum pendants is thoroughly prevented, degreasing and alkaline degreasing cost is reduced, and the quality of products is ensured.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of aluminum and aluminum alloys, and relates to an anodic oxidation method of an aluminum pendant. Background technique [0002] Aluminum has a series of superior physical, chemical and processing properties, and is one of the most widely used and widely used metal materials among non-ferrous metals. Anodized aluminum parts have a beautiful, generous and durable surface, and are widely used in architectural decoration and structural materials, transportation, electronic products, household appliances and metal furniture, etc., and are more and more closely related to the daily life of the people. [0003] Anodizing pretreatment plays a vital role in oxidation quality. In the existing technology, aluminum parts are degreased, alkali-etched, illuminated, anodized, electrolytically colored, electrophoresed, sealed, and dried to obtain finished products. Among them, the degreasing process ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an aluminum pendant anodic oxidation method in view of the technical shortcomings of the existing anodic oxidation technology of aluminum parts, such as high cost of oil removal, difficulty in alkaline corrosion and water washing, and increase of aluminum ions in the anodic oxidation tank

[0010] Starting from reducing the cost of pre-treatment, while taking into account the treatment effect, the oxidation tank liquid is added to the degreasing tank without adding any degreasing agent, which completely solves the problem of the increase of aluminum ions in the anodizing tank, reduces the degreasing cost, and does not affect the degreasing tank. oil quality

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