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Anodic oxidation process for automobile aluminum alloy baggage holders

A car luggage rack and anodic oxidation technology, which is applied in anodic oxidation, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems of failing to pass the test of alkali resistance, etc., and achieve the effect of strengthening functionality and expanding application fields

Inactive Publication Date: 2017-05-10
SHANGHAI YINGHUI TECH DEV
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  • Description
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Problems solved by technology

[0003] The traditional anodizing process often uses high-temperature sealing to solve the problem of corrosion resistance of the oxide film temperature. The national standard test can only reach CASS 8H, and cannot pass the alkali resistance test; and the current salt spray corrosion resistance requirements for anodizing of automotive decorative parts Usually CASS 24H, or NSS 480H, foreign countries such as Jaguar Land Rover NSS test requirements up to 1000H

Method used

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  • Anodic oxidation process for automobile aluminum alloy baggage holders
  • Anodic oxidation process for automobile aluminum alloy baggage holders

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Embodiment 1

[0021] In this embodiment, a special production process sequence is adopted, and the main points are chemical polishing and hole sealing processes.

[0022] Specifically, two acid polishing, anodic oxidation and three-time sealing processes are adopted. The anodized film after this process has excellent corrosion resistance and high and low temperature resistance, and is required to meet the requirements in Table 1.

[0023] Table 1 shows the test requirements for the anodized film.

[0024]

[0025]

[0026] For realizing table 1 requirement, the present invention is realized like this. Its process steps include:

[0027] (1) Feeding; (2) Wax removal; (3) Double washing; (4) Chemical polishing; (5) Triple washing; (6) Lighting; (7) Triple washing; (8) Anodizing; (9) (10) low temperature sealing; (11) triple washing; (12) room temperature sealing; (13) triple washing; (14) high temperature sealing; (15) triple washing; (16) drying; (17) Cutting inspection.

[0028] T...

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Abstract

The invention relates to an anodic oxidation process for automobile aluminum alloy baggage holders with high light, high corrosion resistance and alkali resistance. The anodic oxidation process includes the steps of 1, feeding; 2, wax removing; 3, duplex water washing; 4, chemical polishing; 5, triple water washing; 6, bright dipping; 7, triple water washing; 8, anodic oxidizing; 9, quadruple water washing; 10, low-temperature hole sealing; 11, triple water washing; 12, indoor-temperature hole sealing; 13, triple water washing; 14, high-temperature hole sealing; 15, triple water washing; 16, drying; and 17, discharging and inspecting. According to the anodic oxidation process, an anodic oxidation film on an aluminum alloy base material has excellent effects of high light, high corrosion resistance, alkali resistance and the like, and therefore the shortcoming that a traditional process can only meet the requirement of certain single performance is effectively overcome, the functions of the anodic oxidation process are enhanced, and the application field of the anodic oxidation process is effectively expanded.

Description

technical field [0001] The invention relates to the field of anodic oxidation treatment of aluminum and aluminum alloys, and relates to an anodic oxidation process for an automobile aluminum alloy luggage rack. Background technique [0002] With the development of the automobile industry and the intensification of international competition, customers have higher and higher requirements for the performance of aluminum alloy anodized coatings, especially for aluminum alloy decorative parts such as luggage racks, which require high brightness and high corrosion resistance, such as: Alkali resistance (ph=13.5), acid resistance (ph=1), 480 hours of neutral salt spray test, 24 hours of CASS and five cycle tests of sulfur dioxide required by CAPSA, Volkswagen, Mercedes-Benz, SAIC, BMW, GM, etc. . [0003] The traditional anodizing process often uses high-temperature sealing to solve the problem of corrosion resistance of the oxide film temperature. The national standard test can o...

Claims

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Application Information

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IPC IPC(8): C25D11/08C25D11/16C23F3/03C25D11/24
CPCC23F3/03C25D11/08C25D11/16C25D11/246
Inventor 柴景文李海勇郭怀宇谢卫华
Owner SHANGHAI YINGHUI TECH DEV
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