基于最小表面磨损率的铁基高温合金车削加工研究
Study on Turning of Iron-based Superalloy Based on the Minimum Surface Wear Rate
作者：张宗阳(山东大学 机械工程学院, 高效洁净机械制造教育部重点实验室)；刘战强(山东大学 机械工程学院, 高效洁净机械制造教育部重点实验室)；艾兴(山东大学 机械工程学院, 高效洁净机械制造教育部重点实验室)；王珉(山东大学 机械工程学院, 高效洁净机械制造教育部重点实验室)
Author：Zhang Zongyang(School of Mechanical Eng.,Shandong Univ.,Key Lab. of High Efficiency and Clean Mechanical Manufacture, Ministry of Education)；Liu Zhanqiang(School of Mechanical Eng.,Shandong Univ.,Key Lab. of High Efficiency and Clean Mechanical Manufacture, Ministry of Education)；Ai Xing(School of Mechanical Eng.,Shandong Univ.,Key Lab. of High Efficiency and Clean Mechanical Manufacture, Ministry of Education)；Wang Min(School of Mechanical Eng.,Shandong Univ.,Key Lab. of High Efficiency and Clean Mechanical Manufacture, Ministry of Education)
收稿日期：2011-07-21 年卷（期）页码：2012,44(2):196-200
期刊名称：工程科学与技术
Journal Name：Advanced Engineering Sciences
关键字：表面磨损率；铁基；高温合金；切削力；切削温度
Key words：surface wear rate; iron-based; superalloy; cutting force; cutting temperature
基金项目：国家重点基础研究发展计划资助项目(2009CB724402)
中文摘要
根据最小表面磨损率理论，使用涂层硬质合金刀具对铁基高温合金GH2132进行了干式车削试验。采用单因素法优选切削参数，建立了最小表面磨损率条件下切削力、切削温度及表面粗糙度与切削用量之间的关系，借助电子扫描显微镜(SEM)对试验中产生的加工现象和刀具磨损机理进行了阐述。试验结果表明：刀具在进给量f=0.1 mm/r，切削深度ap=0.1 mm，切削速度v=90 m/min条件下切削时，刀具磨损强度最低，消耗最少，切削路程最长，加工精度最高；刀具的磨损机理前期以涂层剥落为主，后期主要表现为疲劳引起的切削刃崩刃。
英文摘要
Based on the minimum wear rate theory, the coated carbide tools were used for dry turning the iron based superalloy GH2132. The cutting parameters were optimized by the single factor test. On the minimum surface wear rate, the relation among the cutting force, cutting tempreture, surface roughness and cutting parameters was researched. The phenomenon and tool wear mechanism were investigated by scanning electron microscope (SEM). It was shown that the lowest tool wear strength, the lowest tool consumption, the longest tool path, and the highest machining precision are obtained with feed rate f of 0.1 mm/r, cutting depth apof 0.1 mm，and cutting speed vof 90 m/min. The tool wear mechanisms are the coating peeling off in the earlier stage and the chipping of cutting edge in the later period.
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