The centrifugal pump will gradually wear and corrode due to the erosion of sediment, water flow, and corrosion of the medium. The surface of the blade often forms grooves or stripes, or is damaged by cavitation, and the blade has honeycomb holes or even perforations. If the blade is cast with pores, sand holes or slag inclusions, pores or even cracks are likely to appear on the surface after operation.

There are many ways to repair a water pump impeller. There are many repair methods for impeller damage, such as ARC polymer composite coating, powder coating (welding), epoxy coating, rubber and nylon composite repair, etc. Using stainless steel inlay, surfacing, etc. The use of epoxy resin polymer coating has the advantages of simple construction method, low price, etc., and the effect is good.

By optimizing the ratio, the performance indicators of the material are adjusted in a targeted manner, showing high-strength adhesion and toughness to absorb impact energy, as well as high strength and hardness against cavitation and wear damage.