Part 1: Key Features & Engineering Highlights
– Engineered specifically for mil-spec hard anodizing, this industrial high frequency rectifier factory direct unit delivers precise DC output to form a dense, wear-resistant oxide layer on aluminum alloys, titanium, and stainless steel components, making it ideal for piston coating applications where surface hardness and corrosion resistance are critical.
– The IGBT rectifier manufacturer design ensures >92% efficiency and a compact footprint, reducing your heavy-duty DC power supply price per amp while maintaining stable voltage and current for consistent anodizing results across batch production.
– Integrated RS485 Modbus RTU communication enables seamless integration into automated anodizing lines, allowing real-time monitoring and adjustment of the custom current voltage rectifier output to meet stringent aerospace or defense specifications.
– Soft-start ramp-up and multi-stage programmable profile control prevent thermal shock during initial anodizing, ensuring uniform oxide growth on complex geometries like gun parts, hydraulic pistons, and engine components.
– Touch screen HMI with intuitive menu navigation simplifies process setup, while the digital process timer and ampere-minute integrator provide traceable quality records for compliance with MIL-A-8625 Type III hard anodizing standards.
Part 2: Technical Specifications Table
| Output Voltage Range | 0-60 VDC, Continuously Adjustable |
| Output Current Range | 0-500 ADC, Continuously Adjustable |
| Rated Power | 30 kW |
| Input Voltage | 380 VAC ±10%, 3-Phase, 50/60 Hz |
| Regulation Mode | CC/CV with Automatic Cross-Over |
| Ripple & Noise | < 1% RMS at Rated Output |
| Efficiency | > 92% at Full Load |
| Communication Interface | RS485 Modbus RTU, Ethernet, 4-20 mA Analog |
| Control Interface | Push-Button or 7-inch HMI Touch Screen |
| Pulse Function | 1-100% Duty Cycle, 1-3000 Hz Frequency Adjustable |
| Cooling Method | Forced Air Cooling with Intelligent Fan Control |
| Protection Class | IP21 (Indoor Use) |
| Operating Temperature | 0°C to 40°C |
| Dimensions (W x D x H) | 650 x 550 x 900 mm |
| Weight | Approx. 120 kg |
Part 3: Advanced Built-in Protection Systems
– Over-Voltage Protection (OVP): Shuts down output instantly if voltage exceeds set threshold, preventing damage to rectifier and anodizing tank.
– Over-Current Protection (OCP): Limits output current during short circuits or load faults, protecting IGBT modules and transformer.
– Over-Temperature Protection (OTP): Monitors internal heat sink temperature and triggers alarm or shutdown to prevent thermal runaway.
– Phase Loss Protection: Detects missing input phase and halts operation to avoid single-phasing damage.
– Reverse Polarity Protection: Prevents accidental connection with incorrect polarity, safeguarding both rectifier and workpiece.
– Soft-Start Ramp-Up: Gradually increases voltage/current over user-defined time (0-60 seconds) to minimize stress on oxide layer formation.
Part 4: Target Industrial Applications
– Hard Anodizing (Type III) for aerospace, defense, and automotive components requiring wear-resistant oxide layer and piston coating durability.
– Electrowinning and electrorefining of non-ferrous metals where precise DC control improves metal purity and energy efficiency.
– Precious metal plating (gold, silver, platinum) on connectors, jewelry, and electronic contacts requiring uniform deposit thickness.
– Electroplating of chromium, nickel, and zinc on industrial parts for corrosion resistance and decorative finishes.
– Cathodic protection systems for pipelines, storage tanks, and marine structures to prevent galvanic corrosion.
– Electroforming of precision molds, medical implants, and micro-components with complex internal geometries.
Part 5: Customization and Tailored Engineering Services
As a leading IGBT rectifier manufacturer, GAOHUI offers full customization to match your exact process requirements. Our factory can tailor output specifications from 1V to 1000V and 1A to 100,000A, with input options for single or three-phase AC. All units output pure DC. Custom functional modules include Digital Process Timer for cycle automation, Multi-Stage Programmable Profile Control for complex anodizing sequences, Ampere-Minute Integrator for precise charge measurement, Automatic Reverse Polarity for stripping or cleaning cycles, and Soft-Start Ramp-Up to protect delicate workpieces. Control options include local push-button or HMI touch screen, with remote operation via RS485 Modbus RTU, Ethernet, or 4-20 mA analog interface. Pulse functions allow adjustment of duty cycle from 1-100% and frequency from 1-3000 Hz, enabling advanced anodizing techniques for enhanced oxide layer properties. We provide complete engineering support, including on-site commissioning, training, and after-sales service. Contact us for a custom current voltage rectifier solution optimized for your hard anodizing line.






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