段春争

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:机械工程学院

学科:机械制造及其自动化

办公地点:机械学院知方楼7013

联系方式:Email:duancz@dlut.edu.cn

电子邮箱:duancz@dlut.edu.cn

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Study on cutting force under serrated chip formation and adiabaitic shear instability during high speed turning of AISI 1045 hardened steel

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论文类型:会议论文

发表时间:2010-06-26

收录刊物:EI、Scopus

页面范围:3290-3293

摘要:The metallurgical observation and measurement analysis of the chip morphology and cutting force in high-speed turning of AISI-1045 hardened steel were performed. The influences of workpiece material hardness, cutting condition, serrated chip morphology and adiabatic shear instability on cutting force were analysed.The investigations indicate that two types of serrated chips with deformed adiabatic shear band and transformed adiabatic shear band form during the experiments. Also the hardness of workpiece material and cutting conditions have great influence on cutting force. When the ribbon chips transform into the serrated chips and the deformed bands develop into the transformed bands, the cutting forces decrease significantly because of the adiabatic shear instability and the dynamic ductile damage fracture occurs in primary shear zone. ?2010 IEEE.