摘要
对提高磁力研磨18CrNiMo7-6渗碳淬火钢外圆面表面质量的工艺参数进行研究。采用混合正交试验的方法建立混合正交试验表;以磁力研磨加工后的三维表面粗糙度值Sa为主要考察指标,通过极差分析和方差分析分别对混合正交试验的结果进行分析;NPFLEX三维表面测量系统观测工件的三维表面形貌。由混合正交试验结果得出,当碳化硅粒度号为400#、碳化硅质量百分比30%、铁粉粒度号120#、磁场强度0.6T、加工间隙2 mm、工件周向线速度0.2m/s时工件的表面粗糙度达到最小值0.033μm。影响磁力研磨加工18CrNiMo7-6渗碳淬火钢外圆面的三维表面粗糙度的工艺参数的主次顺序及较优组合为:铁粉粒度号120#、加工间隙1 mm、碳化硅粒度号800#、磁场强度0.6T、工件周向线速度0.2m/s、碳化硅质量百分比35%。
Research on process parameters were conducted for improving the excircle face quality of carburized and quenched steel 18CrNiMo7-6.The mixed orthogonal test table was established by using the method of mixed orthogonal test.The three-dimensional surface roughness value Sa was used as the main inspection index,and the results of mixed orthogonal experiment were analyzed by range analysis and variance analysis,The NPFLEX three-dimensional surface measurement system was used to observe the three-dimensional surface topography.The surface roughness of the workpiece reaches a minimum value of 0.033μm,when the silicon carbide grain size 400#,silicon carbide mass percentage 30%,iron powder size No.120#,magnetic field strength 0.6T,machining gap 2mm,and circumferential linear velocity of workpiece 0.2m/s.The order and optimal combination of the process parameters affecting the three-dimensional excircle face roughness of the carburized and quenched steel 18CrNiMo7-6 by MAF are as follows:iron powder grain number 120#,machining gap 1mm,silicon carbide grain number 800#,magnetic field strength 0.6T,circumferential linear velocity of workpiece 0.2m/s,35%by mass of silicon carbide.
作者
王栋
常钵阳
王哲
WANG Dong;CHANG Bo-yang;WANG Zhe(School of Mechanical Engineering,He’nan Province Engineering Laboratory for Anti-Fatigue Manufacturing Technology,Zhengzhou University,He’nan Zhengzhou 450001,China)
出处
《机械设计与制造》
北大核心
2021年第5期241-245,共5页
Machinery Design & Manufacture
基金
高端装备关键零部件的极限寿命制造基础理论与方法(U1804254)。
关键词
磁力研磨
18CrNiMo7-6渗碳淬火钢
混合正交试验
三维表面粗糙度
表面微观形貌
Magnetic Abrasive Finishing(MAF)
Carburized and Quenched Steel 18CrNiMo7-6
Mixed Orthogonal Test
Three-Dimensional Surface Roughness
Surface Micro-Morphology
