Thermodynamic Calculation and Microhardness Analysis of Laser Cladding
Laser cladding is key technology to promote the development of China's remanufacturing industry.Energy conversion mode and distribution of microhardness are important factors affecting the performance and quality of the cladding layer.Laser cladding experiment was implemented on 45 steel surface with different processing parameters,and the thermodynamic analysis of laser cladding was studied.The relationship between energy absorbed by the powder and the amount of temperature change was obtained,and the vertical direction microhardness of the cladding layer under different processing parameters was analyzed.The results show that the energy absorbed by powder material increase by increasing the amount of temperature change,and the vertical direction microhardness under different processing parameters are continuous distribution.This kind of distribution indicates that internal stress of the cladding layer is small,and the cladding layer and the substrate are easy to form well metallurgical combination.
laser claddingmicrohardnessthermodynamic analysiscontinuous distribution
NETL
NSTL
万方数据
