Effects of Electropulsing Cutting on the Quenched and Tempered 45 Steel Rods
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2018年第1期
论文作者：陈龙 WANG Haibo LIU Dan YE Xiaoxin LI Xiaohui 唐国翌
文章页码：204 - 211
摘 要：Electropulsing is introduced into the cutting process for quenched and tempered 45 steel, which is a novel method to improve the material machinability compared with the conventional cutting process. The effects of electropulsing on cutting performances, microstructure evolution, and surface qualities of 45 steel rods were studied. The results indicate that electropulsing is beneficial for the cutting process in 3 aspects as follows:(1) reducing the principal cutting force, surface microhardness and surface roughness of the machined sample dramatically;(2) improving the machining efficiency and prolonging the life of cutting tools;(3) decreasing the thickness of rheological layer which was usually caused by work hardening in the cutting process. The morphology and microstructure of the cutting chips showed that the length of the chips increased significantly with the increase of the current density. The advantage of electropulsing is that it can improve the plastic deformation capability as well as increase the lubricating property between the specimen and the cutting tool.
陈龙1,2，WANG Haibo1,2，LIU Dan1,2，YE Xiaoxin1,2，LI Xiaohui1，唐国翌1,3
1. School of Materials Science and Engineering, Tsinghua University2. Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University3. Key Laboratory for Advanced Materials of Ministry of Education,Department of Materials Science and Engineering, Tsinghua University
摘 要：Electropulsing is introduced into the cutting process for quenched and tempered 45 steel, which is a novel method to improve the material machinability compared with the conventional cutting process. The effects of electropulsing on cutting performances, microstructure evolution, and surface qualities of 45 steel rods were studied. The results indicate that electropulsing is beneficial for the cutting process in 3 aspects as follows:(1) reducing the principal cutting force, surface microhardness and surface roughness of the machined sample dramatically;(2) improving the machining efficiency and prolonging the life of cutting tools;(3) decreasing the thickness of rheological layer which was usually caused by work hardening in the cutting process. The morphology and microstructure of the cutting chips showed that the length of the chips increased significantly with the increase of the current density. The advantage of electropulsing is that it can improve the plastic deformation capability as well as increase the lubricating property between the specimen and the cutting tool.
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