GAOHUI Heavy Duty Anodizing Rectifier (30V 15A) for Aluminum Surface Treatment

This is not a generic bench power supply for hobbyists. It is a professional-grade, industrial high frequency rectifier factory built to the exacting standard of GAOHUI, engineered specifically for the high-reliability demands of a sulfuric acid anodizing bath. Forget struggling with 8-hour cycles and voltage drop-offs. This 30V 15A unit delivers the consistent, ripple-free DC output required to produce a uniform, hard oxide layer on aluminum parts, directly translating to higher dye absorption and superior corrosion resistance. We cut the inefficiency of old-school SCR units, utilizing modern high-frequency inverter technology to deliver peak conversion efficiency and a stable voltage plateau crucial for anodizing rack setups.
Part 1 Key Features & Engineering Highlights
Advanced High-Frequency IGBT Inverter: Our core technology is the IGBT switching module. This provides a precise, smooth DC output with minimal ripple factor, essential for avoiding uneven coating thickness (‘burning’) on the workpiece. This differentiates the GAOHUI from noisy, heavy, outdated linear supplies.
Constant Current / Constant Voltage (CC/CV) Mode: For anodizing, current density is king. This power supply automatically transitions between CC and CV, ensuring you achieve the specific amps-per-square-foot (ASF) target (typically 3-12 ASF for standard anodizing) without needing to manually babysit the voltage.
Precision Digital Control: The front panel features a dual digital meter displaying actual Voltage (V) and Current (A) in real-time. You dial in your target current, and the unit holds it steady, compensating for the natural resistance increase as the anodic layer grows.
Lightweight & Compact Rack Design: At a fraction of the weight of a ferro-resonant or tap-switch rectifier of equivalent power, this unit can be rack-mounted in your lab, workshop, or production line, saving valuable floor space while maximizing portability.
Part 2 Technical Specifications Table
Parameter | Specification | Condition / Notes
—|—|—
Output Voltage | 0 to 30 V DC | Fully adjustable
Output Current | 0 to 15 A DC | Fully adjustable
Input Voltage | AC 110V / 220V | Selectable
Regulation Mode | CC / CV | Auto crossover
Ripple Factor | Less than 1% RMS | Filtered for anodizing
Display Type | Dual 3-digit LED | V / A
Cooling System | Forced Air (Internal Fan) | Temperature controlled
Dimensions | Compact 2U Rack Mount
Operating Temp | 0°C to +40°C
Part 3 Advanced Built-in Protection Systems
This industrial high frequency rectifier factory deployment comes standard with full onboard safety systems. You get Over-Voltage Protection (OVP) to shield sensitive anodizing racks, Over-Current Protection (OCP), and Over-Temperature Protection (OTP) which disengages the output if internal heatsinks exceed safe limits. The inclusion of a Short Circuit Protection circuit ensures that a mis-wired tank bar or tooling contact during rack loading won’t blow the main rectifier FETs, saving you expensive repair downtime.
Part 4 Target Industrial Applications
This unit is a dedicated tool for precision surface finishing. Its core application is:
Anodizing: For aluminum, titanium, and magnesium parts in a sulfuric acid electrolyte. Suitable for both Type II (decorative) and Type III (hard coat) thin-film anodizing processes.
Electropolishing: For metal surface smoothing and deburring.
It operates optimally with a bath temperature range of 68-73°F and serves as a tool for processing small to medium-sized batches requiring critical current control.
Part 5 Customization and Tailored Engineering Services
While this 30V 15A model is a production-ready standard unit, GAOHUI is a custom current voltage rectifier manufacturer. We do not sell one-size-fits-all boxes. If your anodizing line requires a different power footprint, we engineers can build it.
Tailoring: Request any output voltage between 1V and 1000V, and any output current between 1A and 100,000A. Input is AC, Output is exclusively DC.
Advanced Module Add-ons:
Process Timer: Set precise dwell time (e.g., 30-minute anodize cycle).
Multi-Stage Profile Control: Pre-program a specific ramp-up voltage or current profile to reduce burning on odd-shaped parts.
Ampere-Minute Integrator: Allows you to calculate total current draw for consistent coating thickness regardless of part surface area.
Automatic Reverse Polarity: For periodic reversing (PR) anodizing cycles.
Soft-Start: Ramp up current slowly to prevent shock to the part.
Heavy-duty DC power supply price is always cost-effective with us because you are buying direct from a IGBT rectifier manufacturer.
Communication Interfaces: RS485 Modbus RTU, Ethernet IP, or 4-20mA analog remote control for integration into your PLC-driven process control system.
Pulse Functions: Upgrade to pulse mode with frequency adjustment from 1 Hz to 3000 Hz for specialized hard-coat nano-structuring.
Contact our engineers today to discuss your specific rectifier requirements and to request a quotation on the base 30V 15A unit or a fully customized solution.