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 ...
20CrNiMo, as a commonly used material for screw compressor transmission devices, is prone to damage such as pitting and microcracks during long-term service, resulting in decreased transmission efficiency and increased vibration and noise. Using a 4kW fiber laser from Daokedao, a special nickel based alloy coating was deposited on the surface of 20CrNiMo steel, and the process parameter combination was optimized through a four factor three-level orthogonal experiment. The optimal parameters are: laser power of 2.8kW, scanning speed of 12mm/s, powder feeding rate of 15g/min, and overlap rate of 30%. The microstructure of the cladding layer obtained under these parameters is fine, mainly consisting of fine grains and equiaxed grains, with a hardness of HRC54-58. The pitting resistance is 5 times higher than that of the substrate, and the fatigue limit is increased by more than 25%, significantly extending the service life of the transmission device and reducing equipment maintenance frequency.
