Microarc oxidation is More advanced anodizing
Microarc oxidation (MAO), also known as plasma electrolytic oxidation (PEO), is developed based on anodizing technology and produces coatings that are superior to anodizing [1]. The micro arc oxidation process mainly relies on the matching adjustment of electrolyte and electrical parameters. Under the instantaneous high temperature and high pressure generated by arc discharge, a modified ceramic coating with matrix metal oxide as the main component and electrolyte components is grown on the surface of valve metals and their alloys such as aluminum, magnesium, titanium, etc. Its corrosion resistance and wear resistance are significantly better than traditional anodized coatings. Therefore, its application in marine ships and aviation components has received widespread attention
1. Input power supply:3phase 220VAC,380VAC,415VAC,440,480VAC
2. Micro arc oxidation power supply
Due to high voltage requirements (usually between 300-700V), specialized customization is required. Usually equipped with silicon transformers.
Power output voltage: 0-750V adjustable
Power output maximum current: 5A, 10A, 30A, 50A, 100A, 200A,300A etc. are optional.
3. Micro arc oxidation tank and supporting facilities
The tank body can be made of materials such as PP and PVC, with stainless steel reinforcement on the outer layer. Can be equipped with additional cooling facilities or cooling inner tanks.
4. Hanger and cathode materials
Hangers can be made of aluminum or aluminum alloy materials, while cathode materials are made of insoluble metal materials. Stainless steel is recommended.
Micro arc oxidation tank solution:
Micro arc oxidation mainly targets valve metals such as aluminum, magnesium, titanium, zirconium, niobium, and thallium (valve metals refer to metals that play an electrolytic valve role in electrolytes). Micro arc oxidation treatment can be carried out in acidic and alkaline electrolytes, but it is now less commonly used due to the high environmental pollution caused by acidic electrolytes. Commonly used alkaline electrolyte systems include silicate systems, phosphate systems, aluminate systems, etc. In single or their composite electrolytes, various additives such as tungstate and molybdate are added to achieve the goal of improving the growth rate and density of the film layer or functional film layer. Micro arc oxidation treatment should choose a suitable electrolyte system based on the type of substrate material.
1. Density of oxidation solution: Different liquids have different densities, with a general density ranging from 1.0 to 1.1.
2. Operating voltage of oxidation solution: 300V-750V.
3. Current density: The current density of the workpiece varies depending on the liquid. Approximately: 0.01-0.1 amperes per square decimeter. But there are also cases of high current, exceeding 8 amperes per square centimeter.
4. Micro arc oxidation time: 10-60 minutes. The longer the time, the denser the film layer, but the roughness also increases.
5. Liquid pH: Alkaline, pH usually 8-13
6. Micro arc oxidation process flow:
Degreasing - Water washing - Micro arc oxidation - Pure water washing - Sealing
How to order a custom rectifier?
Step 1: Email us at Reyok@aliyun.com for a quote with your complete requirements, which typically should include:
Maximum voltage and current required.
AC input choice (three/single phase, 480V, 440V,415V,380V, 240/208V, etc.).
A simple description of your application.
You may also specify optional features such as PLC capability, reverse polarity, ramp, reduced ripple noise, amp-hour meter, etc.
Step 2: A quote will be generated within a day or two.
Step 3:Once our proposal is accepted, we need 50% down payment to start the production, which typically takes 2-3 weeks and 7-10 days to deliver.
Please feel free to call us at +86-18816139096 to consult with our knowledgeable staff at any time