Abstract
Cu-Sn-Ti has the advantages of excellent properties and low cost, which makes it suitable to be used as a bonding agent for CBN grinding wheels. In this paper, laser cladding was used to obtain Cu-Sn-Ti clad layers on the surface of 316 L steel substrate, and the effects of process parameters (laser power, scanning speed and powder feeding rate) on the clad height, melting pool width, melting pool depth and dilution rate were investigated. Then, the extent of the effect of different process parameters on the clad layer morphology and the reasons for it were analyzed in terms of laser energy as well as absorbed energy. Finally, the numerical prediction models of the morphological characteristic parameters of the clad layer were established and the microhardness of the clad layer was measured. The results showed that the coefficients of determination of the numerical prediction models for clad height, melting pool width, and melting pool depth were 0.9723, 0.9688, and 0.9840, respectively. The maximum relative error of dilution rate was 3.6%. The microhardness of the clad layer reached 310.6–366.2 HV0.5. The results provided theoretical support for the deposition of Cu-Sn-Ti bonding layers with outstanding morphology on the surface of 316 L substrates.
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