1、 Introduction

Micro arc oxidation technology is the abbreviation of micro plasma surface ceramic technology, which refers to the use of arc discharge to enhance and activate the micro plasma oxidation reaction on the workpiece (anode), so that aluminum, titanium, magnesium, etc

High quality reinforced ceramic film is formed on the surface of the workpiece made of metal and its alloy in situ.

The main way is to break through the limitation of Faraday region of traditional anodizing current and voltage by applying voltage on the workpiece. The oxidation potential increased from tens of volts to hundreds of volts. At a certain current density, the

Corona, glow, micro arc discharge and even spark discharge appear on the surface of the workpiece, which makes the surface of the workpiece interact with the electrolyte solution under the high temperature and pressure of the micro arc plasma and generate thermochemistry, electrochemistry and plasma

This kind of ceramic film is metallurgical combined with the substrate, with good bonding strength, high hardness, high wear resistance, corrosion resistance, high pressure insulation and high temperature resistance

Impact and other characteristics, can be several times or even dozens of times to improve the service life of the workpiece, the application prospect is extremely broad.

2、 Applicable occasions

Micro arc oxidation technology is widely used in aerospace, aviation, weapons, machinery, automobile, motorcycle, transportation, petrochemical, textile, printing, cigarette machine, electronic 3C products, light industry, medical and other industries.

1. Aluminum alloy submunition thruster, shell stern, cylinder and piston of internal combustion engine, cylinder and valve core of pneumatic components, cylinder of pneumatic tools, guide wheel and spinning cup of textile machinery, printing machine

Rubbing roller and oil impression roller, wear-resistant parts of smoke making machinery, etc.

2. Magnesium alloy automobile engine cover, box, pedal, steering wheel and seat, 3C electronic products and shell of electric tools, etc.

3. Magnesium alloy wear-resistant apparatus and equipment in corrosion-resistant and wear-resistant parts of ships, petrochemical and medical equipment and other industries are used for surface oxidation treatment of insulated locating pins, and can also replace anodizing and be used for parts

Performance repair of pieces.

1. The energy consumption is greatly reduced by using inverter micro arc oxidation power supply. It has been proved that only one fifth of the energy consumption of common power supply is needed to deal with the same material;

2. The surface hardness of the material is greatly improved. The microhardness of the material ranges from 1000 to 2000 HV, with a maximum of 3000 HV, which is comparable to that of cemented carbide, and much higher than that of high carbon steel and high alloy steel after heat treatment



Hardness of high speed tool steel;



3. Good wear resistance;



4. Good heat resistance and corrosion resistance. It overcomes the shortcomings of aluminum, magnesium and titanium alloy materials in application, so the technology has a broad application prospect;



5. It has good insulation performance and the insulation resistance can reach 100m Ω;



6. The solution is environmentally friendly and meets the requirements of environmental protection discharge;



7. Stable and reliable process, simple equipment and high efficiency;



8. The reaction is carried out at room temperature, easy to operate and master;



9. The ceramic film was grown on the substrate in situ, and the combination was firm, and the ceramic film was dense and uniform;



10. This process can replace and is far superior to the anodizing process.

1. Model: bomp-75050e;

2. Rated power: 37.5kva;

3. Rated input voltage: 3 Φ AC380V ± 10% 50Hz;

4. Output mode: pulse;

5. Output frequency: 0-1khz;

6. Positive pulse voltage: 0-800v;

7. Average current: 0-50a;

8. Process time: 0-999min;

9. Pulse duty cycle: 0-90%;

10. Cooling mode: air cooling;

11. Boundary dimension: 800 × 600 × 2000 (mm) (L × B × h);

12. Protection function: short circuit, over-current, over-voltage, overheating and lack of equal protection measures;

13. Intelligent control system with computer and computer touch screen / LCD screen, arbitrary setting of processing current, voltage, time and pulse combination, as well as various process parameters, with online programmable function, single and double

Polarity output mode can be selected arbitrarily.