The speed V of the cladding is similar to the laser power P. If the speed of the cladding is too high, the alloy powder will not be completely melted, can not play a high-quality cladding effect, if the chum speed is too low, the melting pool will exist for too long, the powder will have burned phenomenon, the alloy element will lose, while the thermal input of the substrate will be very large, which will increase the amount of deformation.<br>The parameters of the laser cladding do not affect the macro and micro quality of the cladding alone, but rather each other. In order to explain the combined effects of laser power P, cladding speed V and spot diameter D, the concept of energy Es is proposed, that is,
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