Repair and coat pump impeller experiencing erosion corrosion
Client
Waste Water Treatment plant, UK.
Application date
July 2021
Scope of work
Repair and coat damaged areas of main cooling water pump impeller, which experienced erosion corrosion as a result of its normal every day use.
Products
Corroglass 600 series: A two pack cold cured
vinyl ester glass flake.
Substrate
Steel
Coating system
- Grit blast to ISO 8501-1 SA 21/2.
- Corroglass 600 series hand applied, with
relativehumidity <85% and steel temperature
30oC or greater than moisture dew point, to
achieve a minimum of 1500 microns DFT
*For corrosion protection, thickness is normally
750 microns DFT average. For areas with
increased wear, thickness is increased to 1500
microns
Coating credentials
Corroglass 600 series was selected due to its
excellent performance properties in immersed
environments. Due to the glassflake components in
the coating, it also has superb resistance to solvents,
acids and de-mineralised water and great flexibility
undercutting resistance – which is ideal for this
particular impeller as it operates in an environment
amongst cool, clean water.
