Cavitation protection coatings for hydroelectric power installations
Hardly any form of modern energy production has a greater "green potential". Water as the sole driving force on one hand. Unfortunately on the other a motor of permanent wear and tear - CAVITATION! Almost all Kaplan and Francis turbines suffer more or less due to the variant hydraulic pressure conditions. Debris, sediment, vibration and the enormous water impact add to the difficulties. Conventional polymeric repair technologies, such as epoxy-ceramic, have proven in many cases as technically inadequate to withstand the enormous loads.
Ask us about: francis impellers, kaplan impellers, penstocks, guide vanes, nozzle hoods, wicket gates, stay vanes, drafttubes, spiral casings
MetaLine Series 700 – MetaLine Series 700 coatings have much smoother surface structures compared to epoxy coatings. The hydro-dynamic flow conditions are positively influenced by the rubber-like sprayed coating. The homogenous, elastic material structure is vibration-resistant and helps compensate for the continual variances in tension and pressure loads under cavitation. The damage from impact and debris infiltration is extremely inhibited via the massive energy absorbing physical properties. Pelton turbine runners are unsuitable for this elastomeric process, due to their extremely high operational pressure situation.
MetaLine Series 700 coatings have much smoother surface structures compared to epoxy coatings. The hydro-dynamic flow conditions are positively influenced by the rubber-like sprayed coating. The homogenous, elastic material structure is vibration-resistant and helps compensate for the continual variances in tension and pressure loads under cavitation. The damage from impact and debris infiltration is extremely inhibited via the massive energy absorbing physical properties. Pelton turbine runners are unsuitable for this elastomeric process, due to their extremely high operational pressure situation.
