Key Features & Engineering Highlights
– Engineered specifically for the micro-arc oxidation (MAO) process, this heavy-duty DC power supply delivers precise pulsed DC output at 750V and 100A, enabling superior ceramic coating formation on aluminum, magnesium, and titanium alloys.
– As a specialized industrial high frequency rectifier factory, we integrate advanced IGBT switching technology to achieve high efficiency and stable voltage-time control, critical for consistent plasma electrolytic oxidation PEO results.
– This custom current voltage rectifier supports fixed cathode and anode current densities, ensuring uniform oxide layer growth for applications like magnesium alloy ceramic coating and titanium bio-compatible oxide production.
– The IGBT rectifier manufacturer design includes a robust pulsed DC mode with adjustable duty cycle (1-100%) and frequency (1-3000Hz), optimizing energy delivery for hard anodizing and surface densification.
– With a power rating up to 80 kW, this unit meets the demands of shop processes requiring large electrolyte tanks and automated control, offering a competitive heavy-duty DC power supply price for industrial buyers.
Technical Specifications Table
| Output Voltage Range | 0V to 800V (Rated 750V) |
| Output Current Options | 5A, 10A, 30A, 50A, 100A, 200A, 300A, 400A, 500A (100A Standard) |
| Input Power | AC Three-Phase, 380V/480V (Customizable) |
| Rated Power | Up to 80 kW (Based on 750V 100A) |
| Output Type | Pulsed DC Only |
| Pulse Frequency Range | 1 Hz to 3000 Hz |
| Pulse Duty Cycle Range | 1% to 100% |
| Control Interface | RS485 Modbus RTU, Ethernet, 4-20mA Analog |
| Cooling Method | Forced Air or Water-Cooled (Optional) |
| Efficiency | Greater than 90% at Full Load |
Advanced Built-in Protection Systems
Our MAO rectifier includes comprehensive safeguards to ensure reliable operation in demanding industrial environments. Overvoltage protection prevents damage during plasma discharge fluctuations. Overcurrent protection automatically limits output to safe levels. Short-circuit protection triggers immediate shutdown. Thermal overload protection with intelligent cooling management extends component life. All protections are configurable via the RS485 digital interface for remote monitoring and diagnostics.
Target Industrial Applications
– Micro-arc oxidation (MAO) for aluminum alloy ceramic coatings.
– Plasma electrolytic oxidation PEO for magnesium alloy ceramic coating.
– Titanium bio-compatible oxide formation for medical implants.
– Hard anodizing of aluminum components for aerospace and automotive.
– Electrowinning and precious metal plating processes requiring precise pulsed DC.
– Surface treatment of lightweight alloys for defense and electronics.
Customization and Tailored Engineering Services
As a leading industrial high frequency rectifier factory, GAOHUI offers full customization for your specific process needs. We can modify voltage from 1V to 1000V and current from 1A to 100,000A, with input AC and output DC only. Optional custom functional modules include: Digital Process Timer for cycle control, Multi-Stage Programmable Profile Control for complex voltage-time ramps, Ampere-Minute Integrator for precise charge monitoring, Automatic Reverse Polarity for enhanced coating adhesion, and Soft-Start Ramp-Up to reduce thermal stress. Local control is via push-button or HMI touch screen, with remote options through RS485 Modbus RTU, Ethernet, or 4-20mA analog interfaces. Pulse functions are fully adjustable with 1-100% duty cycle and 1-3000Hz frequency, enabling fine-tuning for any electrolyte or alloy composition.
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