Abstract
The Nd: YAG laser robot cladding system, which consists of 6-axis robot, powder supply equipment and special powder delivery nozzle, are used for laser cladding of Stellite 6 + WC mixed powder. The Stellite 6 + WC mixed powder were cladded on mild carbon steel plate (SM400B). Small penetration depth, cracking behavior, microstructures, Vickers hardness, and wear resistance were investigated. Ductility-dip crack, Vickers hardness and wear resistance were increased with WC volume fraction in the range of 0%∼90%. The microstructures of clad layer can be divided into hypoeutectic (0%∼40%WC) and hypereutectic (50%∼100%WC) one.The Nd: YAG laser robot cladding system, which consists of 6-axis robot, powder supply equipment and special powder delivery nozzle, are used for laser cladding of Stellite 6 + WC mixed powder. The Stellite 6 + WC mixed powder were cladded on mild carbon steel plate (SM400B). Small penetration depth, cracking behavior, microstructures, Vickers hardness, and wear resistance were investigated. Ductility-dip crack, Vickers hardness and wear resistance were increased with WC volume fraction in the range of 0%∼90%. The microstructures of clad layer can be divided into hypoeutectic (0%∼40%WC) and hypereutectic (50%∼100%WC) one.
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