Peng Chengwanli, Li Guanzheng, Zhang Xingchun, Gao Yufei
SDU-ANU Joint Science College, Shandong University, Weihai 264209, China.
Key Laboratory of High Efficiency and Clean Mechanical Manufacture of MOE, School of Mechanical Engineering, Shandong University, Jinan 250061, China.
Materials (Basel). 2025 Mar 6;18(5):1173. doi: 10.3390/ma18051173.
Neodymium iron boron (NdFeB) magnetic materials are widely used in fields such as electronics, medical devices, power machinery, and hardware machinery. This paper conducted a three-factor and five-level orthogonal experiment on diamond wire saw cutting NdFeB to determine the influence degree of key factors such as workpiece feed rate, diamond wire speed, and workpiece processed size on the surface roughness a and waviness a of NdFeB slices. Further analysis was conducted on the influence of various parameters on the PV value (peak valley difference) of the waviness profile curve of the sawed surface. Finally, slicing processing was carried out under optimized process parameter combinations. The research results indicate that the primary and secondary order of process parameters affecting surface roughness a and waviness a is workpiece feed rate, wire speed, and sawed workpiece size, and the influence on the waviness PV value also shows a consistent trend. The optimal combination of processing parameters is workpiece feed rate of 0.1 mm·min, wire speed of 1600 m·min, and workpiece size of 10 mm. The obtained surface roughness a is 0.433 μm and the waviness a is 0.037 μm, respectively. The regression mathematical model for the waviness PV value is PV = 0.747 × × × . The research results of this paper provide an experimental basis and guidance for optimizing process parameters of sawing NdFeB.
钕铁硼（NdFeB）磁性材料广泛应用于电子、医疗设备、动力机械和五金机械等领域。本文对金刚石线锯切割NdFeB进行了三因素五水平正交试验，以确定工件进给速度、金刚石线速度和工件加工尺寸等关键因素对NdFeB切片表面粗糙度a和波纹度a的影响程度。进一步分析了各参数对锯切表面波纹度轮廓曲线PV值（峰谷差）的影响。最后，在优化的工艺参数组合下进行切片加工。研究结果表明，影响表面粗糙度a和波纹度a的工艺参数主次顺序为工件进给速度、线速度和锯切工件尺寸，对波纹度PV值的影响也呈现一致趋势。加工参数的最优组合为工件进给速度0.1mm·min、线速度1600m·min、工件尺寸10mm。得到的表面粗糙度a为0.433μm，波纹度a分别为0.037μm。波纹度PV值的回归数学模型为PV = 0.747×××。本文的研究结果为优化NdFeB锯切工艺参数提供了实验依据和指导。
