Aluminum alloy surface treatment method of microarc oxidation combined with pulse electrodeposition hole sealing and pulse electrodeposition hole sealing device

A technology of pulse electrodeposition, aluminum alloy surface, applied in surface reaction electrolytic coating, anodizing, electrolytic coating, etc., can solve the problems of unfriendly environment, reduced application, colored film, etc., to achieve environmental friendliness and good protection Excellent effect on function and corrosion resistance

Inactive Publication Date: 2018-04-20
TIANJIN ZHENGTIAN MEDICAL INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dichromate sealing is not friendly to the environment, and there are problems such as coloring of the

Method used

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  • Aluminum alloy surface treatment method of microarc oxidation combined with pulse electrodeposition hole sealing and pulse electrodeposition hole sealing device
  • Aluminum alloy surface treatment method of microarc oxidation combined with pulse electrodeposition hole sealing and pulse electrodeposition hole sealing device

Examples

Experimental program
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Effect test

Embodiment 1

[0047] A method for surface treatment of an aluminum alloy with micro-arc oxidation combined with pulse electrodeposition sealing, comprising the following steps:

[0048] (i) Pretreatment

[0049] (a) Degreasing treatment

[0050] Wash the surface of the sample with NaOH solution for 10 minutes to remove the oil on the surface of the sample;

[0051] (b) Grinding treatment

[0052] Grind the degreased sample with 240﹟, 400﹟, 600﹟, 800﹟, 1000﹟ sandpaper step by step until it is clean and bright without obvious scratches;

[0053] (c) Ultrasonic cleaning

[0054] Put the polished sample into absolute ethanol and ultrasonically clean it for 15 minutes, wash it with deionized water and dry it for later use;

[0055] (ii) Micro-arc oxidation treatment

[0056] Put the sample after pretreatment in the electrolyte of silicate system, use the sample as the anode, and make the sample completely submerged below the liquid level of the electrolyte, and the stainless steel electrolyti...

Embodiment 2

[0072] A method for surface treatment of an aluminum alloy with micro-arc oxidation combined with pulse electrodeposition sealing, comprising the following steps:

[0073] (i) Pretreatment

[0074] (a) Degreasing treatment

[0075] Wash the surface of the sample with NaOH solution for 10 minutes to remove the oil on the surface of the sample;

[0076] (b) Grinding treatment

[0077] Grind the degreased sample with 240﹟, 400﹟, 600﹟, 800﹟, 1000﹟ sandpaper step by step until it is clean and bright without obvious scratches;

[0078] (c) Ultrasonic cleaning

[0079] Put the polished sample into absolute ethanol and ultrasonically clean it for 15 minutes, wash it with deionized water and dry it for later use;

[0080] (ii) Micro-arc oxidation treatment

[0081] Put the sample after pretreatment in the electrolyte of silicate system, use the sample as the anode, and make the sample completely submerged below the liquid level of the electrolyte, and the stainless steel electroly...

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Abstract

The invention discloses an aluminum alloy surface treatment method of microarc oxidation combined with pulse electrodeposition hole sealing. The treatment method includes the following steps that (1),pretreatment; (2), micro-arc oxidation treatment; (3), cleaning treatment before hole sealing; (4), pulse electrodeposition hole sealing treatment and (5), test specimen post treatment. A pulse electrodeposition hole sealing device includes an electrolytic bath arranged on a base plate. The electrolytic bath contains a hole sealing liquid. A temperature sensor, an aluminum electrode, and the testspecimen are all soaked in the hole sealing liquid. The aluminum electrode is connected with the anode of a pulse power supply through a communication line, and an amperemeter is arranged between thealuminum electrode and the pulse power supply. The test specimen is connected with the cathode of the pulse power supply. According to the electrolyte, raw materials are easy to get, environmental pollution is small. The ceramic layer obtained is compact and smooth, the porosity rate is low, the decay resistance is prominent, and the binding force between the ceramic layer and a base body is good. The novel pulse electrodeposition hole sealing method is good in adhesiveness and obvious in hole sealing effect.

Description

technical field [0001] The invention belongs to a surface treatment method of an aluminum alloy material, and in particular relates to a surface treatment method of an aluminum alloy with micro-arc oxidation combined with pulse electrodeposition sealing. Background technique [0002] Compared with the largest industrial material—steel, aluminum and its alloys have the advantages of low density, light weight, high specific strength, good plasticity and formability, and their excellent electrical and thermal conductivity, so they are widely used in industry. Extensive, which makes aluminum and aluminum alloys become important metal materials next to steel, and play an important role in industries such as automobiles, machinery, aerospace, and electronics. [0003] However, some shortcomings of aluminum itself also limit the application of aluminum and its alloys in the national economy, such as low hardness of aluminum, poor wear resistance, poor corrosion resistance, low melt...

Claims

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Application Information

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IPC IPC(8): C25D11/20C25D11/06C25D11/16
CPCC25D11/026C25D11/06C25D11/16C25D11/20
Inventor 乔腾波
Owner TIANJIN ZHENGTIAN MEDICAL INSTR CO LTD
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