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Rolling brush type micro-arc oxidation processing method and device

A technology of micro-arc oxidation and treatment method, applied in anodizing and other directions, can solve the problems of low production efficiency, fixed-point micro-arc oxidation method cannot achieve continuous treatment, etc., and achieves the effects of convenient operation, reduced cost, and convenient use.

Inactive Publication Date: 2013-07-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a brush-type micro-arc oxidation treatment method for the defects of the existing immersion micro-arc oxidation treatment mode, and the fixed-point micro-arc oxidation method cannot realize continuous treatment and low production efficiency.

Method used

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  • Rolling brush type micro-arc oxidation processing method and device
  • Rolling brush type micro-arc oxidation processing method and device
  • Rolling brush type micro-arc oxidation processing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Use this device to carry out micro-arc oxidation treatment on the surface of a magnesium alloy plate with an area of ​​50cm×50cm, using a power frequency AC power supply, the workpiece is connected to one of the output terminals of the AC power supply through a wire, and the roller brush cathode is connected to the The other output end of the power supply; start the submersible pump, the electrolyte is transferred through the electrolyte pipe, and enters the roller brush cathode stainless steel cylinder through the catheter tube, and the electrolyte is absorbed by the PVA collodion sleeve through the through hole of the stainless steel cylinder, and the PVA collodion The water absorption rate can reach more than 10 times its own weight, and the water retention is very good when it is not subjected to external force, and the water is quickly discharged when it is pressed. Moreover, in sports use, due to the strong adsorption force of water, it can form a certain resistanc...

Embodiment 2

[0036] Wrap the stainless steel cylinder with a 1.5cm thick PVA collodion cover, the thickness of the collodion at both ends of the collodion cover is 0.2cm, and the others are the same as in Example 1. Effect is the same as embodiment 1.

[0037]

Embodiment 3

[0039] Wrap the stainless steel cylinder with a 3.5cm thick PVA collodion sleeve, the thickness of the collodion on both ends of the collodion sleeve is 0.2cm, and the roller brush cathode rolls back and forth on the surface of the workpiece at a speed of 40r / min. Others are the same as in Example 1. As a result, a uniform smooth film layer can be seen on the surface of the workpiece.

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Abstract

The invention relates to a rolling brush type micro-arc oxidation processing method and device. According to the method, a roller brush type cathode rolls and brushes on the surface of an anode workpiece back and forth, so that the micro-arc oxidation processing from the local surface to the whole surface of the workpiece is achieved. The device comprises a micro-arc oxidation power supply, the anode workpiece, the roller brush type cathode, a solution recovering device, a microarc oxidation electrolyte solution, an electrolyte solution tank, a submersible pump and a circulating cooling water tank, wherein the roller brush type cathode comprises a stainless steel cylinder, a rubber cotton cover, a conductive part, a liquid guiding part and a plastic handle. The device has the characteristics of simple structure, convenience in carrying, flexibility in operation and the like; with the adoption of the method and the device for microarc oxidation processing, the micro-arc oxidation processing of surfaces of a large-size large-area workpiece and a device difficult to disassemble, as well as the rapid repairing of a local broken area is easily achieved in a continuous manner, so that the resources are saved, the cost is reduced and the efficiency is improved; and the method and the device are particularly suitable for microarc oxidation processing of workpieces made of magnesium, aluminum, titanium and their alloys.

Description

technical field [0001] The invention relates to a micro-arc oxidation surface treatment method and device, in particular to a micro-arc oxidation treatment method for the surface of a large-sized workpiece and a portable device for realizing the method. Background technique [0002] Micro-arc oxidation is a surface treatment technology for in-situ growth of ceramic layers on the surface of non-ferrous metals such as Al, Mg, Ti, etc. It breaks through the limitation of the working voltage of traditional anodic oxidation technology, and leads the working area from the Faraday zone to the high-voltage discharge zone. The instant high-temperature sintering effect of the micro-arc zone is used to directly grow the ceramic film in situ on the metal surface. Compared with ordinary anodizing technology, micro-arc oxidation technology introduces plasma into chemical reaction mechanism. Under the intervention of plasma, there is a strong energy release, showing a strong arc discharge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/02
Inventor 莫锦添张永君李爱红
Owner SOUTH CHINA UNIV OF TECH
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