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HVOF

HVOF produces premium quality hard, dense coatings exhibiting high adhesion to the substrate and excellent wear resistance for extended component longevity and profitability.

 

THEORY OF OPERATION:

The HVOF process efficiently uses high kinetic energy and controlled thermal output to produce dense, low porosity coatings that exhibit high bind strengths, some of which exceed 83 MPa (12,000 PSI), low oxides and extremely fine as-sprayed finishes. The coatings have low residual internal stresses and can be sprayed to a thickness not normally associated with dense, thermal and spray coatings. This process uses an oxygen-fuel mixture. The coating material is in powdered form. The fuel gas is mixed with oxygen, ignited and creates sub-sonic gas velocities as the flame leaves the barrel. The ignited gases form a circular flame configuration that surrounds and uniformly heats the powdered spray material as it exits the gun and is propelled to the workpieces surface.

TYPICAL APPLICATION:

  • Rebuild and Salvage Operations
  • Abrasion Resistance
  • Sliding Wear Resistance
  • Resistance to Fretting, Galling or Adhesive Wear
  • Resistance to Cavitation Effects
  • Resistance to Chemical Attack
  • Control of Oxidation and Sulfidation
  • Atmospheric and High Temperature Corrosion Control

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