Transactions of Materials and Heat Treatment

Title：Optimization on process parameters of laser cladding remanufacturing for roller

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ClassificationCode：TG174

year,vol(issue):pagenumber：2019,44(8):80-85

Abstract：

In order to prolong the service life of roller in rolling mills, taking the laser cladding power, scanning speed and powder feeding speed as the optimization parameters and the interfusion dilution rate, hardness and wear rate as the evaluation indexes, the process parameters of laser cladding and remanufacturing repair of roller were optimized by the grey relational analysis method. Then, the quality of cladding layer was tested by the orthogonal test with L9(33) orthogonal table, and the optimum process parameters of laser cladding with scanning speed of 100 mm s-1, powder feeding speed of 42 g·min-1 and laser cladding power of 1.7 kW were obtained by the grey relational analysis aimed to the quality of laser cladding layer. By comparing with the interfusion dilution rate, hardness and wear rate of laser cladding layer before and after optimization of process parameters, the results show that the dilution rate of laser cladding layer is reduced by 10.07%, the hardness is increased by 13.45%, and the wear rate is reduced by 38.46%.

Funds：

江苏省职业教育教学改革研究课题(ZYB100)

作者简介：赵建峰（1973-），男，学士，高级讲师 E-mail：jsrdzjf@163.com

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