磁力研磨18CrNiMo7-6钢V型缺口试样工艺试验研究  

Process Parameters Optimization of Magnetic Abrasive Finishing on the V-groove of 18CrNiMo7-6 Steel

作　　者：王栋[1] 王哲[1] 马少奇 张银霞[1] 刘治华[1] WANG Dong;WANG Zhe;MA Shao-qi;ZHANG Yin-xia;LIU Zhi-hua(Henan Province Engineering Laboratory for Anti-fatigue Manufacturing Technology,School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学机械与动力工程学院抗疲劳制造技术河南省工程实验室,郑州450001

出　　处：《组合机床与自动化加工技术》2021年第5期137-140,145,共5页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金联合基金重点支持项目(U1804254)。

摘　　要：针对一些有V形槽的重要零件,其槽内底部表面粗糙度难以提高的问题。采用磁力研磨的方法对材料为18CrNiMo7-6的V形缺口工件缺口底部进行光整加工,以获得理想的光滑表面。实验利用正交试验方法设计混合正交试验表,研究碳化硅粒度、铁粉粒度、磁场强度、工件周向转速等工艺参数对改善表面质量的影响。通过极差分析了解各因素对最终表面粗糙度的影响规律,找出影响表面粗糙度的主要因素。试验数据分析表明,碳化硅粒度和铁粉粒度对提高表面粗糙度有显著影响;在SiC粒度为400#、铁粉粒度为180#、磁场强度为0.6 T、工件转速为600 rpm的条件下,获得的表面粗糙度值降低至0.035μm。For some important parts with V-grooves,it is difficult to improve the surface roughness of the bottom of the groove.In this paper,We adopted the magnetic abrasive finishing method to finish the bottom of the V-grooved workpiece made from 18CrNiMo7-6 steel.The mixed orthogonal test table was set by orthogonal testing method to investigate the effects of four main factors,that is,silicon carbide particle size,iron powder size,magnetic field strength and rotation of workpiece on improving the surface.The influence law of working condition parameters and the main factors on the surface roughness were studied by range analysis.The experimental data analysis have shown that the silicon carbide particle size and the iron powder size have a significant effect on improving the surface roughness,that the obtained surface roughness value under the conditions of silicon carbide particle size of 400#,iron powder size of 180#,magnetic field strength of 0.6 T and rotation of workpiece of 600 rpm have reduced to 0.035μm.

关 键 词：磁力研磨 18CrNiMo7-6钢 V形缺口 混合正交试验 三维表面粗糙度 

分 类 号：TH161[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]