Suppliers For Aluminium Treatments
Rectifiers for Oxidation
Aluminum anodizing is a process that is sensitive to the waveform of the applied direct voltage and other process parameters. Specific power supplies are essential to reduce costs and processing times while increasing the performance of the finished product. CAEV manufactures rectifiers and electronic devices specifically designed for aluminum oxidation.
- Rectifiers for sulfuric acid oxidation – output up to 20Vdc and 30000Adc
- Pulsed current rectifiers – adjustable base current, pulse amplitude, and duty cycle
- Rectifiers for chromic acid oxidation – output up to 60Vdc and 30000Adc
- Rectifiers for hard anodizing – output up to 100Vdc and 10000Adc
- Ramp Programmers
- Oxide Thickness Programmers
- Work Time Programmer
Technical Features
- Three-phase power supply according to customer requirements
- Main switch with door interlock
- Power transformer compliant with IEC standards
- Thyristor-controlled rectifier circuit: six-phase connection with reactor, three-phase bridge,
- twelve-phase
- Output voltage and current adjustable from 0 to the maximum value
- Adjustable ramp for output voltage and current rise
- Adjustable holding voltage
- Holding voltage activation by external consent
- Constant voltage and constant current regulation
- 1% stabilization of the set values for load or supply voltage variations
- Output current ripple smoothed with LC filter cell according to customer specifications
- Manual controls on panel front or in remote control panel
- Display of delivered voltage and current
- Remote PLC control with opto-isolated signals… 0-20mA, 4-20mA, 0-10Vdc
- Remote PLC control with Modbus or Profibus serial connection
- Forced air cooling
- Closed-loop water cooling
- Cooling with air conditioner for IP55 cabinets
- Cabinets painted with epoxy paints
- Cabinets with lifting eyebolts, feet, or wheels for easy handling
- Cabinet protection degree: IP20…IP55
- Magnetic and thermal protection of the entire equipment
- Overtemperature protection
- Protection of semiconductors with ultra-fast fuses
- RC networks for semiconductor protection
- Electronic limitation of maximum deliverable current for overload protection
- Control of correct phase sequence of the power supply
- Protection of auxiliary circuits with fuses and circuit breakers
- Connections with copper and aluminum busbars
- Machine shutdown in case of plant protection barrier opening (Pilz relay)
Optional devices:
- Ramp programmer
- Digital ammeter
- Process timer
