Defending Pelton runners, turbine shafts, and flow-path components against silt erosion and cavitation - the two wear modes that steadily eat hydro turbine efficiency. HVOF carbide coatings extend overhaul intervals and keep generating units on the grid.
Himalayan and monsoon-fed rivers carry heavy silt loads - quartz particles that strike runner surfaces at high velocity, tearing away base metal and opening the door to cavitation. Efficiency drops season by season until the unit must come off the grid for a costly runner replacement.
We deploy multiple spray technologies, chosen based on the exact component, operating temperature, and erosion type:
