Abrasion Resistant

The abrasive wear mechanism similar to machining, grinding, polishing or lapping used for shaping materials. Two body abrasive wear occurs when one surface (usually harder than the second) cuts material away from the second.. This mechanism very often changes to three body abrasion as the wear debris then acts as an abrasive between the two surfaces. Abrasives can act as in grinding where the abrasive is fixed relative to one surface; or as in lapping where the abrasive tumbles, producing a series of indentations as apposed to a scratch. There is a large range of thermally sprayed coatings designed to protect against abrasion. These can be grouped as Metallics, Ceramics, Carbides and self-fused, self-fluxing Alloys. Coatings are designed to operate at high temperatures or within aggressive environments.

Typical Applications

• Ball valve

• Gate valves

• Bearing Journals

Processes

• HVOF

• PLASMA

• ARC

Materials

• Tungsten Carbide

• Chrome Carbide