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 working environment of the induced draft fan and supply fan blades in power plants is harsh, and they are subjected to long-term erosion and wear from dusty flue gas, especially after the desulfurization system. Acidic condensate can also cause corrosion and wear. The blades made of 15MnV material often experience thinning and perforation after thousands of hours of operation. Laser cladding technology can prepare a high-performance wear-resistant and corrosion-resistant coating on the surface of blades.
This process uses nickel based alloys (such as Inconel 625) as the bonding phase, mixed with 30% -35% nanostructured tungsten carbide (WC) particles as the strengthening phase. By optimizing the laser parameters (power density of 3.5 × 10 ⁴ W/cm ², scanning speed of 8mm/s), it is ensured that WC particles are partially melted but not burned, so that they are evenly distributed in the nickel based γ phase, forming an excellent composite coating. This coating combines the corrosion resistance of nickel based alloys with the high hardness characteristics of WC.
The surface hardness of the strengthened blade can reach HRC 58 or above, and the wear rate in dusty flue gas is only 1/5 of that of the original 15MnV steel sheet. Meanwhile, nickel based alloys endow them with excellent resistance to pitting and stress corrosion cracking. This technology is not only used for pre protection of new blades, but also widely applied in the repair and remanufacturing of in-service blades, effectively improving the operational reliability and service life of wind turbines.
