Spang Power Electronics is a manufacturer of custom power equipment installed for anodizing. Spang’s expertise in power control and conversion has helped us become a global leader for the supply of anodizing rectifiers.

Anodizing Rectifiers

Anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. The process is called anodizing because the treated part forms the anode electrode of the applied electrical circuit. Anodizing increases wear and corrosion resistance as well as improves surface adhesion for paint primers and glue.

The anodized layer is grown by passing direct current (DC) from the anodizing rectifier through an electrolytic solution. The part being anodized is the positive electrode, the anode. The current flow releases hydrogen at the negative electrode, the cathode, and oxygen at the surface of the part increasing the oxide layer.

Spang Power Electronics provides Power Systems configured as DC rectifiers in six (6) pulse, twelve (12) pulse, and DC chopper configurations with precise voltage and current control for anodizing applications.