Compound field–assisted laser cladding is an advanced laser processing technology. In this paper, the influence mechanism of single physical field parameters of electromagnetic-ultrasonic compound field–assisted laser cladding on the cladding layer as well as the parameter optimization of compound field–assisted laser cladding are investigated. The Box-Behnken design response surface methodology method is used for experimental design. Through the response surface modeling analysis, it is found that the ultrasonic power has the greatest influence on the microhardness of the cladding layer. For the wear volume of the cladding layer, as the ultrasonic power increases, the wear volume increases and the wear resistance of the cladding layer decreases. Besides, a smaller ultrasonic power and a larger DC current value can obtain a cladding layer with a smaller wear volume. The optimal combination of physical field parameters was obtained through response surface methodology parameter analysis and experimental verification.

复合场辅助激光熔覆是一种先进的激光加工技术。本文研究了电磁-超声复合场辅助激光熔覆单物理场参数对熔覆层的影响机理以及复合场辅助激光熔覆的参数优化。Box-Behnken 设计响应面方法用于实验设计。通过响应面建模分析发现，超声功率对熔覆层显微硬度的影响最大。对于熔覆层的磨损量，随着超声波功率的增加，磨损量增加，熔覆层的耐磨性降低。除了，较小的超声功率和较大的直流电流值可以获得磨损量较小的熔覆层。通过响应面法参数分析和实验验证，得到物理场参数的最佳组合。