Heavy Duty Anodizing Rectifier (24V 2000A) for Hard Coat Aluminum

This DC power system eliminates the voltage sag and current ripple common in general-purpose units, delivering pure, stable output essential for consistent oxide layer growth on 6061 and 7075 aluminum alloys. Engineered for the rigorous demands of batch anodizing lines, this unit provides exacting control over the electrochemical conversion process, ensuring uniform coating thickness from tank to tank.
Part 1 Key Features & Engineering Highlights
Linear inverter topology with IGBT switching modules from a certified industrial high frequency rectifier factory. This design achieves over 89% efficiency, reducing energy waste and heat dissipation in your plating shop. The unit includes a digital processor with PID closed-loop regulation, maintaining voltage and current output within 1% of setpoint regardless of load fluctuations. A high-visibility LED display shows real-time output volts and amps, while a rugged rotary encoder allows precise setpoint adjustment. The enclosure is IP54 rated, with forced-air cooling and corrosion-resistant powder coating to withstand acidic fumes from the anodizing tank.
Part 2 Technical Specifications Table
| Parameter | Specification |
| :— | :— |
| Model | ADR-242K |
| Rated Output Voltage | 0 – 24V DC (continuously adjustable) |
| Rated Output Current | 0 – 2000A (continuously adjustable) |
| Input Power | 3-Phase, 380V AC ±10%, 50/60Hz |
| Output Ripple | < 3% (at rated load) |
| Control Method | IGBT PWM with PID closed-loop |
| Display | Digital Voltmeter & Ammeter (LED) |
| Efficiency | ≥ 89% |
| Protection Class | IP54 |
| Cooling Method | Forced Air |
| Operating Temp | -10°C to +50°C |
| Dimensions (WxDxH) | 740 x 505 x 425 mm |
| Gross Weight | Approx. 85 kg |
Part 3 Advanced Built-in Protection Systems
Operators benefit from comprehensive safeguards that prevent costly downtime. The system includes output short-circuit protection, automatic constant current limiting, and over-temperature shutdown with audible alarm. A dedicated phase-loss monitor on the input line ensures the unit cannot operate on a damaged power feed. Internal MOVs and fast-acting fuses protect sensitive electronics from mains transients. These features are standard, making the heavy-duty DC power supply price highly competitive for the level of reliability delivered.
Part 4 Target Industrial Applications
This rectifier is built specifically for the aluminum finishing industry. Primary uses include decorative anodizing for architectural components, hard coat anodizing for aerospace aluminum treatment, and dye tank coloring where precise voltage control prevents ‘burning’ the workpiece. It is also suitable for electro-polishing and other demanding electrochemical surface treatments requiring a stable, high-current DC source. The multi-stage control capability supports the required voltage ramp-up for hard coat processes.
Part 5 Customization and Tailored Engineering Services
As a flexible IGBT rectifier manufacturer, we provide extensive customization for production line integration. Standard engineering can accommodate output specifications from 1V to 1000V and 1A to 100,000A, all DC output only. For anodizing lines, we typically integrate a multi-stage profile control module to automate current ramps and hold times. Additional available modules include a Process Timer for cycle control, an Ampere-Minute Integrator for accurate coating thickness determination, and Automatic Reverse Polarity for cleaning or stripping cycles. For direct PLC integration, interfaces such as RS485 Modbus RTU, Ethernet IP, and analog 4-20mA signals are available. The unit can also be fitted with a Pulse Function generator (1-3000Hz adjustable) for specialized alloy treatments. For your specific batch setup, request a custom current voltage rectifier configuration with your required tank footprint and control interface.