Laser Quenching equipment
Perform phase transformation hardening treatment on the metal surface to improve the hardness, wear ...
Perform phase transformation hardening treatment on the metal surface to improve the hardness, wear ...
Used for surface strengthening, repair, and remanufacturing of components, the coating has high adhe...
Flexible processing of complex curved sheet metal parts, with high cutting accuracy, fast speed, and...
Specially designed for seamless welding of precision plastic components, with a small heat affected ...
The ship's propulsion shaft (stern shaft) is immersed in seawater for a long time, facing severe electrochemical corrosion and seawater erosion. The traditional Monel alloy coating or epoxy coating has the disadvantages of weak adhesion and easy damage. Laser cladding technology can prepare a long-lasting metallurgical bonding anti-corrosion coating for the stern shaft.
This study used nickel copper alloy powder (such as Monel 400) with excellent seawater corrosion resistance as the cladding material. By optimizing the laser power and scanning speed, the coating is ensured to be completely dense and free of penetrating pores, thereby isolating the contact between seawater and the steel substrate. At the same time, the metallurgical bonding between the cladding layer and the substrate (such as 35CrMo steel) fundamentally eliminates the risk of coating peeling.
Salt spray test and real ship hanging test show that the corrosion resistance of the laser cladding nickel copper alloy coating is more than 5 times that of traditional epoxy coatings, and has the same lifespan as the substrate. This technology solves the stubborn problem of corrosion on the stern shaft of ships, greatly reducing the frequency and cost of ship maintenance in the dock, and improving the ship's sailing rate.
