Constantly in use, constantly stressed, and with little time for maintenance – the typical lifecycle of a Francis or Kaplan impeller. Even minor irregularities created on these precision blade surfaces lead to flow-induced turbulence that can trigger additional wear and tear. Instead of "stress-loaded" welding, alternative repair technologies should also be considered.
We have a solution for problems with cavitation on impellers by means of repair compounds! Scope of application: Francis impellers Kaplan impellers Pump impellers Rotors Water brakes MetaLine - Technical solutions in detail METALINE SERIES 700 MetaLine Series 700 coatings absorb destructive impact energy and vibration due to their permanently elastic material behavior. Coating thickness is adapted to the stress areas and flow conditions of turbine layout. The especially smooth surface finish prevents turbulence and is extremely cavitation-resistant. METALINE SERIES XL MetaLine Series XL offers repair materials to be applied by trowel or brush with a low molecular weight. They are used for recontouring partial erosion conditions. Owing to their low-temperature processing, no surface tension is caused. These repair materials are electrochemically neutral and do not cause bi-metal corrosion.
MetaLine Series 700 – Sprayable / OEM Manufacturer quality MetaLine Series 700 coatings absorb destructive impact energy and vibrations through a permanently elastic material behavior. The coating thickness is individually adapted to the load parameters and flow conditions of the turbine design. The particularly smooth surface structure prevents turbulence and is exceptionally cavitation-resistant. MetaLine Series XL – Trowel- or brushable / Repair quality MetaLine Series XL are low-weight, flat-coat or brush-on repair materials. They serve to recontour partial erosion states. Due to the completely temperature-free processing, no surface tensions arise. The materials are electrochemically neutral and do not lead to bi-metal corrosion. Installation does not require trained hands and can be implemented insitu without dismantling the runner.