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A micro-arc oxidation treatment method and device

A technology of micro-arc oxidation and treatment method, applied in anodizing and other directions, can solve the problems of poor wear resistance and corrosion resistance, equipment power limitation, and high processing energy consumption, saving energy, reducing unit area, and reducing unit area effect

Inactive Publication Date: 2011-12-07
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aluminum, magnesium, titanium and their alloy rotary workpieces have many excellent properties, and because of their light weight and easy processing and forming, aluminum, magnesium, and titanium have become one of the main consumables for aircraft fuel tanks, oil conduits, and hubs. Because of its poor wear resistance and corrosion resistance in special environments, and the existing micro-arc oxidation equipment is limited by equipment power, the general process can only process small workpieces, and the processing energy consumption is relatively high. Especially the surface treatment of relatively large-area aluminum alloy workpieces has certain difficulties

Method used

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  • A micro-arc oxidation treatment method and device
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  • A micro-arc oxidation treatment method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0031] like figure 1 A kind of micro-arc oxidation processing device shown, comprises micro-arc oxidation power supply 1, electrolytic tank 2 and the stainless steel plate that is arranged on the inner wall of electrolytic tank 2 as cathode and is connected with micro-arc oxidation power supply 1 negative pole, is characterized in that, also includes The tooling 4 used to support the rotary workpiece 3 and place it suspended above the electrolytic tank 2 and the circulating cooling system 5 connected to the electrolytic tank 2 through pipes, the speed regulating motor 6 is connected to the tooling 4 and drives the rotary workpiece through the tooling 4 3 Rotate at a constant speed.

[0032] A micro-arc oxidation treatment device described in this embodiment also includes a conductive slip ring 7 connected to the positive pole of the micro-arc oxidation power supply 1, the conductive slip ring 7 is in contact with the tooling 4 and conducts electricity to the rotary workpiece 3...

Embodiment 2

[0034] like figure 2 A kind of micro-arc oxidation processing device shown, comprises micro-arc oxidation power supply 1, electrolytic tank 2 and the stainless steel plate that is arranged on the inner wall of electrolytic tank 2 as cathode and is connected with micro-arc oxidation power supply 1 negative pole, is characterized in that, also includes The tooling 4 used to support the rotary workpiece 3 and place it suspended above the electrolytic tank 2 and the circulating cooling system 5 connected to the electrolytic tank 2 through pipes, the speed regulating motor 6 is connected to the tooling 4 and drives the rotary workpiece through the tooling 4 3 Rotate at a constant speed.

[0035] A micro-arc oxidation treatment device described in this embodiment also includes a conductive slip ring 7 connected to the positive pole of the micro-arc oxidation power supply 1, the conductive slip ring 7 is in contact with the tooling 4 and conducts electricity to the rotary workpiece ...

Embodiment 3

[0038] Step 1, using the micro-arc oxidation treatment device of Embodiment 1 to manufacture the tooling 4 for supporting the rotary workpiece 3, the rotary workpiece 3 is an aluminum workpiece;

[0039] Step 2. Select an electrolyte suitable for aluminum workpieces. The concentration of each component in the electrolyte is: sodium hexametaphosphate 12g / L-15g / L, sodium silicate 8g / L-10g / L, sodium molybdate 11g / L L ~ 13g / L, sodium carbonate 7g / L ~ 9g / L, the solvent is deionized water, and the electrolyte is added to the electrolytic cell 2;

[0040] Step 3, use the tooling 4 to support the rotary workpiece 3 above the electrolytic tank 2, and keep the partial area of ​​the rotary workpiece 3 immersed in the electrolyte in the electrolytic tank 2;

[0041] Step 4: Connect the tooling 4 to the speed-regulating motor 6, turn on the speed-regulating motor 6, and drive the rotary workpiece 3 to rotate at a constant speed of 2 r / min through the tooling 4;

[0042] Step 5, the circul...

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Abstract

The invention discloses a microarc oxidation processing method, comprising the following steps of: 1), manufacturing a fixture for supporting a rotary body workpiece; 2), selecting an electrolyte based on the material of the rotary body workpiece, and adding the electrolyte in an electrolyzer; 3), supporting the rotary body workpiece above the electrolyzer by the fixture, and ensuring that a partof the rotary body workpiece is immersed in the electrolyte of the electrolyzer; 4) connecting the fixture with a speed regulating motor, starting the speed regulating motor, and driving the rotary body workpiece to rotate at a constant speed by the fixture; 5), communicating a circulation cooling system with the electrolyzer via a pipeline; and 6), starting a microarc oxidation power supply, andcarrying out microarc oxidation treatment on the rotary body workpiece by adopting the part immersed in the electrolyte, of the rotary body workpiece as an anode, and a stainless steel plate as a cathode. The invention also discloses a device for realizing the method. In the invention, the mode that a part of rotary body workpiece is immersed in the electrolyte is adopted, thus reducing the unit area of the overall workpiece in treatment, greatly reducing the treated current and saving energy.

Description

technical field [0001] The invention belongs to the technical field of material surface treatment, and in particular relates to a micro-arc oxidation treatment method and device. Background technique [0002] The hardening treatment process for the surface of aluminum, magnesium, titanium and its alloy rotary workpieces has been greatly developed in recent years, such as hard anodic oxidation, thermal spraying, etc., which have been widely used in the industry. Oxidation process is a non-ferrous metal (such as aluminum, magnesium, titanium, etc.) industry recognition. In particular, the micro-arc oxidation hardening treatment on the surface of aluminum, magnesium, titanium and their alloys produces an oxide ceramic layer with excellent corrosion resistance, wear resistance, etc., so it has been widely recognized by the industry. [0003] Aluminum, magnesium, titanium and their alloy rotary workpieces have many excellent properties, and because of their light weight and eas...

Claims

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Application Information

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IPC IPC(8): C25D11/02
Inventor 郝建民陈宏吕志胜
Owner CHANGAN UNIV
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