王栋,孙少铮,乔瑞勇,张银霞

• 1:郑州大学机械与动力工程学院

摘要(Abstract)：

为提高18CrNiMo7-6钢旋转弯曲疲劳试样V型缺口底部表面完整性，设计出一套旋转磁场磁力研磨装置，采用混合正交试验的方法，研究SiC粒度号、Fe粉粒度号、加工间隙、加工时间、工件转速5个工艺参数对试样表面完整性的影响。对正交试验结果用极差分析法分析后得出，SiC粒度号对试样V型缺口底部三维表面粗糙度影响最大，Fe粉粒度号影响最小；最优加工工艺参数组合为：SiC粒度号为400#,Fe粉粒度号为115#，加工间隙为0.8 mm，加工时间为12 min，工件转速为900 r·min~(-1)。以该工艺参数组合开展旋转磁场磁力研磨试验，18CrNiMo7-6钢旋转弯曲疲劳试样V型缺口底部三维表面粗糙度值可由加工前的0.267μm降至0.047μm，试样V型缺口底部表面粗糙度大幅度降低，表面完整性得到了提高。

关键词(KeyWords)： 旋转磁场;磁力研磨;18CrNiMo7-6钢;V型缺口;混合正交试验;三维表面粗糙度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目—高端装备关键零部件的极限寿命制造基础理论与方法（U1804254）

作者(Author): 王栋,孙少铮,乔瑞勇,张银霞

DOI: 10.19356/j.cnki.1001-3997.20260403.004

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