摘要
运用IN718镍基高温合金流动应力模型进行数值模拟,考查了IN718镍基高温合金车削过程中工艺参数对切削性能和刀具的影响。结果表明:在各因素中,对切削温度而言,切削速度影响最大,进给量次之,背吃刀量影响最小;对切削力而言,切削速度影响最小,背吃刀量影响最大。换热系数对工件和刀具的最高温度和平均切削力影响不大,但工件和刀具的平均温度随着换热系数的增大而减小。研究结论有助于优化IN718镍基高温合金车削过程中工艺参数的选择与优化。
The flow stress of nickel-based alloy is taken to process numerical simulations in order to investigate the effects of machining parameters on cutting performance and tool.The simulation results show that cutting speed has the greatest influence on cutting temperature,and them feed rate comes second,cutting depth is the least,but the cutting speed has the smallest influence on cutting force,cutting depth does the greatest one on it.Heat transfer coefficient has not so much influence on the workpiece and the tool＇s maximum temperature and average cutting force,but the greater the heat transfer coefficient,the lower the average temperature.The cutting force and cutting temperature is higher with the increase of the knife-filings friction coefficient.The obtained results are helpful to choosing and optimizing process parameters in turning nickel-based alloy.
出处
《机械制造与自动化》
2011年第3期93-96,117,共5页
Machine Building & Automation
基金
江苏省自然科学基金资助项目(BK2006082)
江苏省高校自然科学基金资助项目(O4KJB460005)
关键词
镍基合金钢
工艺参数
有限元
nickel-based alloy
machining parameters
FEM
