Aluminum Anodizing – 24V 2000A IGBT Rectifier by GAOHUI

EXECUTIVE SUMMARY
This GAOHUI heavy-duty power supply is purpose-built to meet the exacting demands of high-volume aluminum anodizing lines. Operating in harsh, acidic environments, this 24V 2000A system delivers tightly regulated DC power for the critical stages of hard coat anodizing, aerospace aluminum treatment, and dye tank coloring. Engineered for 100% continuous duty, it provides the low-voltage, high-current stability required to produce consistent oxide layers, from regular decorative anodizing at 16-17 volts to the higher energy demands of semi-hard processes. As a trusted industrial high frequency rectifier factory, we deliver a machine that outperforms traditional SCR units in efficiency, precision, and footprint.
PART 1. KEY FEATURES & ENGINEERING HIGHLIGHTS
High-Frequency IGBT Topology: Utilizes advanced IGBT switching at 20-50 kHz, replacing heavy, inefficient line-frequency transformers. This results in a power factor >0.92 and efficiency exceeding 91%, significantly reducing your operational energy costs for large tank lines.
Ultra-Ripple Free Output: Designed with a capacitor-enhanced smoothing network. The output ripple is less than 3% of the rated voltage, which is mandatory for achieving uniform, dye-free color consistency in architectural and decorative anodizing.
100% Continuous 24/7 Duty Cycle: Unlike modified welders or small lab units, this unit is built for production. The copper bus bars, oversized heatsinks, and industrial-grade capacitors are rated for continuous maximum power output, precisely as required by the 720 rule and dedicated aluminum processing schedules.
Sealed Electronics: The main control boards are treated with a conformal coating to resist acid fumes and corrosive hydrogen gas present in aluminum anodizing and etching tanks.
PART 2. TECHNICAL SPECIFICATIONS

PART 3. ADVANCED BUILT-IN PROTECTION SYSTEMS
Your production line cannot afford downtime. This IGBT rectifier manufacturer has integrated a multi-layer protection suite: Phase Loss Detection to prevent single-phase operation damage; Over-Temperature shutdown on the IGBT module and heat sink; Automatic Constant Current / Constant Voltage (CC/CV) crossover to protect thin films; and Short Circuit / Overload trip with auto-recovery logic. These systems are critical when charging large tank loads with variable surface areas.
PART 4. TARGET INDUSTRIAL APPLICATIONS
This unit is specifically calibrated for the following aluminum finishing processes:
Dye Tank Coloring: Requires ultra-low ripple for uniform dye absorption on architectural extrusions.
Hard Coat Anodizing: Capable of pushing voltage up to the 30V limit for dense oxide layers, while maintaining high current density.
Aerospace Aluminum Treatment: Precision control for MIL-A-8625 type coatings requiring tight temperature and voltage curves.
Desmutting & Deoxidizing Used as a low-voltage rectifier for cleaning and stripping baths prior to main anodizing cycles.
PART 5. CUSTOMIZATION AND TAILORED ENGINEERING SERVICES
Because your anodizing profile is unique, GAOHUI offers full factory customization. As a custom current voltage rectifier specialist, we can remanufacture this platform to meet any exact spec. Our core capability: single unit output from 1V-1000V and 1A-100,000A. Input is standard AC; output is pure DC only.
Optional add-on modules include:
Process Timer & Multi-Stage Profile Control: Program step-by-step ramping and soak times for different alloys (e.g., 6061 vs. 7075).
Ampere-Minute Integrator: Precisely monitor and control total charge passed through the tank for repeatable coating thickness.
Automatic Reverse Polarity (EDM/Stripping): For periodically reversing current on workpieces during anodized layer build-up.
Soft-Start Module: Prevents tripping mains breakers during initial load connection.
Digital Interfaces: RS485 Modbus RTU, Ethernet/IP, or Analog 4-20mA for full PLC integration. Pulse functions are available from 1-3000 Hz adjustable for specialized sealing or coloring.
Contact us for a factory-direct heavy-duty DC power supply price. Available from stock with a 2-year warranty. 1000 sets per month production capacity ensures fast global shipping.