Why Choose This Micro-arc Oxidation Rectifier

Many industries rely on high-performance light metal components. Aluminum, magnesium, titanium alloys are widely used. However, they need surface strengthening to resist wear and corrosion. Traditional surface treatment methods have flaws. They often result in uneven coatings, high energy consumption and environmental pollution. However, Gaohui’s micro-arc oxidation rectifier uses a professional design. It adopts stable high-frequency pulsed power to trigger micro-arc discharge. This forms a dense ceramic layer. The layer bonds tightly with the metal substrate. Even in harsh environments, there is no peeling or cracking. What’s more, the process is environmentally friendly. It has no harmful chemicals. Also, it is more efficient than traditional electroplating. Thus, it is a green and cost-effective solution for modern manufacturers.

“The micro-arc oxidation rectifier is the core of the surface treatment process,” said a company leader. “It delivers precise and stable pulsed power to the workpiece. This ensures the ceramic oxide layer grows uniformly and densely. For this reason, our customers get more durable components. They also have lower production costs. In turn, this helps them gain an advantage in the competitive market.”

How This Micro-arc Oxidation Rectifier Works

The process is professional yet straightforward. The micro-arc oxidation rectifier delivers high-frequency pulsed power to the workpiece and electrolyte system, triggering micro-arc discharge between the workpiece (anode) and the counter electrode (cathode). This discharge promotes electrochemical reactions, forming a dense, hard ceramic oxide layer on the metal surface—different from ordinary power supplies, Gaohui’s micro-arc oxidation rectifier provides stable pulsed power, ensuring consistent coating quality and long-term reliable operation with low maintenance. Even in continuous production, it maintains stable performance, avoiding the trouble of frequent adjustments and downtime.

Main Features of This Micro-arc Oxidation Rectifier

Gaohui builds a full range of surface treatment power supplies, suitable for manufacturers of all sizes and serving aerospace, medical, 3C electronics and other industries. The micro-arc oxidation rectifier offers these core benefits:

High Efficiency & Energy Saving

Adopting advanced circuit design and intelligent IGBT components, the rectifier achieves over 90% efficiency, reducing power waste significantly. This energy-saving performance helps users lower monthly electricity costs, and the unit pays for itself over time—especially for large-scale production, the energy-saving effect is more obvious, bringing considerable economic benefits to enterprises.

Precise Parameter Control

It supports switchable constant current/constant voltage modes, with stepless adjustable voltage, current and pulse parameters (frequency 100–3000Hz, duty cycle 5–100%). It fits different workpiece sizes and material types, easily handling both low-voltage and high-voltage pulse requirements, ensuring the ceramic coating meets the technical standards of different industries.

Durable & Stable

Equipped with professional “Three-Proofing” treatment (moisture-proof, mold-proof, salt-spray proof), the unit can operate stably in harsh industrial environments. It has built-in overcurrent, overheating, overvoltage and phase loss protection, ensuring long-term trouble-free operation with a low failure rate, reducing maintenance costs for enterprises.

Full Model Coverage

Available in single-pulse and dual-pulse models, with air-cooled and water-cooled options. Current ranges from 5A to 1000A, voltage up to 750V, matching different production scales—from small laboratories to large industrial production lines, meeting the diverse needs of different customers.

Intelligent Operation

Supports single-segment/multi-segment operation, with 50 process recipes storage and one-click recall. It is equipped with an RS485 communication interface for remote control, real-time operation status indicators and an emergency stop button for safe and convenient operation, reducing the labor intensity of operators.

Customizable Options

A professional technical team provides personalized customization according to customers’ actual processes, production scales and on-site requirements, fully meeting diverse application needs—whether it’s a special process or a specific production scale, Gaohui can provide tailored solutions.

Where to Use This Micro-arc Oxidation Rectifier

This advanced technology serves a wide range of high-end applications, covering multiple industries and scenarios, bringing reliable surface treatment solutions to enterprises:

• Aerospace components: Magnesium alloy corrosion protection and surface strengthening, ensuring components can withstand harsh aerospace environments
• Medical equipment: Titanium alloy surface treatment for biocompatibility, meeting the strict standards of the medical industry for material safety
• Deep-sea technology: Metal component corrosion resistance enhancement, adapting to the high-pressure, high-humidity deep-sea environment
• 3C electronics: Aluminum alloy shell surface hardening, improving the wear resistance and service life of electronic products
• Industrial production: Aluminum profile oxidation coloring and surface strengthening, enhancing the appearance and durability of industrial products
• Laboratory R&D: Ceramic coating preparation and material performance testing, providing reliable support for scientific research experiments

Technical Specifications

Gaohui’s industrial-grade micro-arc oxidation rectifier has flexible optional specifications, with modular and intelligent design, fully meeting the precision requirements of different application scenarios. Detailed technical parameters are as follows:

• Input Voltage: AC 380V ±10%, 50Hz (industrial standard input, strong anti-interference, adapting to unstable power supply environments)
• Operating Mode: Switchable Constant Current/Constant Voltage mode, free adjustment according to process needs, improving the adaptability of the equipment
• Output Waveform: Standard single-pulse waveform; customizable dual-pulse waveform (positive/negative voltage/current independent adjustable), meeting different process requirements
• Output Frequency: 100–3000Hz (customizable, matching different metal oxidation processes, ensuring coating quality)
• Duty Cycle: 5–100% stepless adjustable, precise control of discharge time, optimizing the ceramic layer formation process
• Control Accuracy: Within 1 percent, ensuring stable and consistent coating quality
• Cooling Options: Air-cooled or water-cooled, air-cooled for small and medium models, water-cooled for large models with high power
• Remote Control: RS485 communication interface for easy setup and operation, supporting remote monitoring and control
• Ripple Factor: Less than 3 percent, ensuring stable power output and uniform coating
• Environmental Adaptability: “Three-Proofing” treatment, suitable for high-humidity, corrosive industrial environments
• Protection Functions: Built-in overcurrent, overheating, overvoltage, phase loss protection (not for short-circuit operation), ensuring equipment and operator safety