摘要
针对颗粒增强钛基复合材料（PTMCs）高速磨削的特征,以均匀热源为模型,提出了一种计算磨削过程中热分配比例的新方法。采用CBN超硬磨料砂轮在80-160m/s的速度范围内进行了高速磨削验证,试验结果表明：PTMCs高速磨削热传递过程中比能es与ds1/4ap-3/4vw-1/2呈直线关系,与理论分析相一致,并基于此得到电镀CBN砂轮高速磨削PTMCs进入工件的热量比例为52.0%-79.5%。同时,进行了电镀砂轮高速磨削PTMCs温度场仿真,探明了其温度分布特征。
A calculation method of the energy partition to the workpiece material based on uniform thermal source was presented.High-speed grinding experiments were conducted on the particle reinforced titanium matrix composites（PTMCs）using an electroplated cubic boron nitride（CBN）wheels with grinding speeds of80-160 m/s.A linear relationship was found between the specific grinding energy and the parameters combination ds1/4ap-3/4 vw-1/2,by which the energy partition to the workpiece was calculated,which was52.0%-79.5% in the present study.Additionally,the temperature distribution in high-speed grinding of PTMCs was explored based on finite element analysis.
出处
《金刚石与磨料磨具工程》
CAS
2015年第3期6-9,共4页
Diamond & Abrasives Engineering
基金
南京航空航天大学研究生创新基地(实验室)开放基金(No.kfjj201433)
江苏省科技支撑计划(工业)项目(No.BE2013109)
关键词
均匀热源
高速磨削
热传递
钛基复合材料
uniform thermal source
high-speed grinding
energy partition
titanium matrix composites
