基于DEFORM-3D的EHM切削Inconel 718的刀具磨损研究
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摘要
具有难切削加工问题的高温合金是发动机的关键材料,为了减少切削加工区域的刀具磨损深度,运用仿真软件DEFO-RM-3D建立了高温合金Inconel 718的EHM仿真模型,随后用EHM仿真模型分别进行了单因素实验与正交实验的仿真实验。实验结果表明:随着切削速度、切削深度、进给量三个切削因素的持续增大,刀具磨损深度表现为不断上升的趋势,而工件初始温度的不断升高则会持续降低刀具磨损深度;在工件初始温度不断升高的条件下,EHM仿真模型的刀具磨损深度比无电流加热切削刀具磨损深度降低了21.9%。
Superalloy with difficult machining problem is the key material for engines.In order to reduce the tool wear depth in the machining area,the EHM simulation model of the superalloy Inconel 718 is established by DEFORM-3Dsoftware.Then the simulation experiments of single factor experiments and orthogonal experiments are carried out with the EHM simulation model.The experimental results show that with the continuous increase of cutting speed,cutting depth and feed rate,the tool wear depth shows a steadily upward tendency,and the increase of the initial temperature of the workpiece continuously reduces the tool wear depth.Under the condition that the initial temperature of the workpiece keeps rising,the wear depth of the EHM simulation model tool is reduced by 21.9% compared with that of non-current heating cutting tool.
Superalloy with difficult machining problem is the key material for engines.In order to reduce the tool wear depth in the machining area,the EHM simulation model of the superalloy Inconel 718 is established by DEFORM-3Dsoftware.Then the simulation experiments of single factor experiments and orthogonal experiments are carried out with the EHM simulation model.The experimental results show that with the continuous increase of cutting speed,cutting depth and feed rate,the tool wear depth shows a steadily upward tendency,and the increase of the initial temperature of the workpiece continuously reduces the tool wear depth.Under the condition that the initial temperature of the workpiece keeps rising,the wear depth of the EHM simulation model tool is reduced by 21.9% compared with that of non-current heating cutting tool.
引文
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[2]向彪,董霖,康裕华.GCr15钢导电加热硬切削性能有限元仿真[J].润滑与密封,2017,42(8):82-86.
[3]TOSUN N,OZLER L.A study of tool life in hot machining using artificial neural networks and regression analysis method[J].Journal of Materials Processing Technology,2002,124(1-2):99-104.
[4]陈燕,杨树宝,傅玉灿,等.钛合金TC4高速切削刀具磨损的有限元仿真[J].航空学报,2013,34(9):2 230-2 240.
[5]谢林春,鄢锉,刘为桥,等.激光辅助加热切削氧化铝工程陶瓷的刀具磨损试验研究[J].现代制造工程,2015(3):95-99.
[6]ZHU D,ZHANG X M,DING H.Tool wear characteristics in machining of nickel-based superalloys[J].International Journal of Machine Tools&Manufacture,2013,64(1):60-77.
[7]王明强,朱永梅,刘文欣,有限元网格划分方法应用研究[J].机械设计与制造,2004(1):22-24.
[8]WANG X Y,HUANG C Z,ZOU B,et al.Dynamic behavior and a modified Johnson-Cook constitutive model of Inconel 718at high strain rate and elevated temperature[J].Materials Science and Engineering:A,2013,580(37):385-390.
[9]SHIH A J.Finite element simulation of orthogonal metal cutting[J].Journal of Engineering for Industry,1995,117(1):84-93.
[10]牛阿慧.基于DEFORM-3D的钛合金TC4切削残余应力分析[D].太原:太原科技大学,2013.
[11]王学深.正交试验设计法[M].上海:上海人民出版社,1979:53-58.
[12]尹曰建,段涛,张雁鹏.基于极差分析法对柴油机喷嘴参数进行优化设计[J].内燃机与配件,2017(7):12-14.