Securing pump impellers, ships' screws and other components exposed to cavitation. Polyurethane coating makes the downtime needed for the repair / replacement of used components and the associated costs can be greatly reduced. The flexible polymer coating protects against the effects of cavitation, and extends the lifespan of machine parts.
The phenomenon of cavitation arising in the spaces adjacent to the wetted surfaces of the turbine consists in a sudden phase change from the liquid phase to the gaseous phase under the influence of pressure reduction. If the liquid rapidly accelerates accordance with the principle of conservation of energy, the static pressure of the liquid must decrease. This happens for example. Within a narrow hole of a valve or on the surface of the propeller of the ship.