摘要
通过超声振动滚压加工正交试验,研究主轴转速、进给速度、静压力和加工次数对TC4钛合金表面质量的影响,并将材料的表面粗糙度、显微硬度及残余应力作为其表面质量的评价指标。试验结果表明:超声振动滚压加工工艺能降低TC4钛合金表面粗糙度,大幅度提高显微硬度,在表面引入残余压应力;合适的主轴转速、进给速度及加工次数使表面粗糙度达到最佳效果,一定范围内,表面粗糙度随着静压力的增大而减小;主轴转速对材料表面显微硬度影响较小,显微硬度随着进给速度的增大而减小,随着静压力及加工次数的增大而增大;主轴转速对材料表面残余应力有无规律的影响,材料表面的残余应力值随着进给速度的增大而减小,随着静压力及加工次数的增大而增大。
The effects of rotary speed,feed rate,static pressure and processing times on the surface quality of TC4 titanium alloy were studied by ultrasonic vibration rolling processing orthogonal test,and the surface roughness,microhardness and residual stress of the material were taken as the evaluation indexes of surface quality.The test results show that the ultrasonic vibration rolling process can reduce the surface roughness of TC4 titanium alloy,greatly improve the microhardness and introduce residual compressive stress on the surface.The best surface roughness can be achieved with suitable rotary speed,feed rate and processing times.Within a certain range,the surface roughness decreases with the increase of static pressure.The rotary speed has little effect on the microhardness of the material surface,and the microhardness decreases with the increase of feed rate and increases with the increase of static pressure and processing times.The rotary speed has random influence on the residual stress on the surface of the material.The value of residual stress on the surface of the material decreases with the increase of the feed rate,and increases with the increase of the static pressure and processing times.
作者
席刚
刘元铭
张跃飞
刘燕萍
XI Gang;LIU Yuan-ming;ZHANG Yue-fei;LIU Yan-ping(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Institute of Solid Microstructure and Properties,Beijing University of Technology,Beijing 100124,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2020年第4期61-67,共7页
Journal of Plasticity Engineering
基金
国家重点研发计划项目(2018YFB1308700)
山西省科技重大专项项目(20181102015)
山西省应用基础面上青年基金项目(201801D221130)。
关键词
超声振动滚压
工艺参数
粗糙度
显微硬度
残余应力
ultrasonic vibration rolling
process parameters
roughness
microhardness
residual stress
