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Repair of Gate Shaft in Water Conservancy Industry: The Long term Corrosion Resistance Advantage of Daokedao Laser Cladding vs Traditional Thermal Spraying
Date:2025-11-07 14:36     Source:daokedao     Browse:46

The water conservancy gate shaft is immersed in water for a long time, facing mud and sand wear and water corrosion. Traditional thermal spray coatings have high porosity and are prone to substrate corrosion and coating peeling due to water ingress. The service life is only 2-3 years, and maintenance is difficult.

The Daokedao laser cladding equipment uses corrosion-resistant alloy powder, with a cladding layer density of 99.9%, no pores, and a corrosion resistance of over 1500 hours in salt spray testing. The bonding strength of the coating exceeds 350MPa, and its wear resistance is four times that of thermal spraying. It can be repaired on site without dismantling the gate.

The service life of the repaired gate shaft has been extended to 6-8 years. After adopting this technology, a certain water conservancy project has reduced the downtime for gate maintenance by more than 100 hours per year, ensuring the stable operation of the water conservancy system and adapting to harsh outdoor conditions in the water conservancy industry.


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