Rectifiers for aluminium treatments

Aluminium anodising is sensitive and reactive to DC voltage wave shape and other process parameters. Proper devices are indispensable to reduce costs and times and to increase quality.

CAEV produces rectifiers and electronic devices specifically designed for aluminium anodizing.

  • Rectifiers for sulphuric anodizing - voltage up to 20Vdc and current up to 30000Adc
  • Pulse current rectifiers - adjustable base current, pulse amplitude and duty cycle
  • Rectifiers for chromic anodizing -  voltage up to 60Vdc and current up to 30000Adc
  • Rectifiers for hard anodizing  -  voltage up to 100Vdc and current up to 10000Adc
  • Ramp Programmers
  • Oxyde Thickness Programmers
  • Process Timer

Technical data (for more detailed information download PDF up here)

  • Three phase input voltage according to customer requests
  • Main breaker with handle and locking system
  • Main transformer according to IEC standards
  • Thyristor rectifing bridge: six phase with reactor, three phase bridge, twelve pulse bridge
  • Output voltage and current stepless regulation from 0 to the nominal value
  • Constant voltage and constant current regulation
  • Output voltage and current rising ramp regulation
  • Output voltage and current stabilization: 1%
  • LC cell filter to reduce output ripple according to customer requests
  • Manual controls on the front door or in remote control box
  • Output voltage and current display
  • Remote PLC control via optoinsulated signals: 0-20mA, 4-20mA, 0-10V
  • Remote PLC control via Modbus or Profibus serial net
  • Forced air cooling
  • Closed loop water cooling
  • Cooling via air conditioner for IP55 enclosures
  • Epoxidic painting
  • Enclosure with lugs, feet or wheels. Easily removable. 
  • Enclosure protection degree: IP20...IP55
  • Magnetic and thermal protection
  • Over-temperature protection
  • Extra-fast fuses for semicondutor devices protection
  • RC subbers for semiconductor devices protection
  • Over-current electronic protection
  • Input phase sequence monitoring circuit
  • Auxiliary circuit protection by fuses and breakers
  • Copper and aluminium busbars