Selective Plating for Electric Motors and Generators

Electric Motors and Power Generators

Selective Plating for Electric Motors and Generators

The SIFCO Process® is very effective for repairing electrical generating equipment.

SIFCO ASC has a wealth of experience with plating electric motor equipment and power generators. Ideal for worn out engine components, or equipment that is subject to high temperatures, heavy current loads and environmental contaminants, selective plating can extend the life cycle, reduce costs and enhance operating efficiencies of electric motors and power generation equipment.

Electric Motor and Power Generator Applications for the SIFCO Process®

The primary application areas are the bearing housing (end bell) and the rotor journal. End bells, which house the bearings that support both ends of the motor shaft, often suffer from fretting corrosion during operation. The SIFCO Process® is used to plate the bores to size with copper, tin, or nickel. Machining the bores, prior to plating, is usually only necessary to re-establish concentricity.

Plating a worn bearing housing can take less time and be more efficient than alternative methods such as sleeving or thermal spray processes.

DC motors and generator slip rings develop copper oxide films which reduce electrical conductivity and cause arcing and pitting especially during locked motor start-up. Excessive damage occurs in highly corrosive environments, such as in the bleaching areas of pulp and paper plants. Plating 2.5µ (0.0001 in.) of rhodium and then 1.3µ (0.00005 in.) of gold onto the refinished commutator extends maintenance intervals and service life.

Common applications include: 

  • Dimensional Restoration
  • Wear Resistance
  • Anti-Galling and Slip
  • Improved Hardness
  • Corrosion Protection
  • Defect Repairs 
  • Prebraze

See our video – Electric Motor Repair

For more information on our Selective Plating Services, contact us today.