Al_(2)O_(3)纳米流体微量润滑对TC4钛合金钻削性能的影响研究  

Study on Effect of Al_(2)O_(3)Nanofluid Minimal Quantity Lubrication on Drilling Performance of TC4 Titanium Alloy

作　　者：赵通 刘孟楠 郭便 雷辰阳 刘观 马曙杰 ZHAO Tong;LIU Mengnan;GUO Bian;LEI Chenyang;LIU Guan;MA Shujie(College of Mechanical Engineering,Baoji University of Arts and Sciences,Baoji 721016,China;State Key Laboratory of Intelligent Agricultural Power Equipment,Luoyang 471039,China)

机构地区：[1]宝鸡文理学院机械工程学院,陕西宝鸡721016 [2]智能农业动力装备全国重点实验室,河南洛阳471039

出　　处：《拖拉机与农用运输车》2024年第6期12-18,共7页Tractor & Farm Transporter

基　　金：智能农业动力装备全国重点实验室开放课题(SKT2022003);陕西省自然科学基础研究计划项目(2023-JC-QN-0571);陕西省教育厅服务地方专项科学研究计划项目(23JC002);宝鸡文理学院研究生创新科研项目(YJSCX24ZD09)。

摘　　要：微量润滑是一种绿色可持续的加工技术,纳米流体微量润滑是对微量润滑的一种增效技术。结合国内外对纳米流体微量润滑的研究现状,研究Al_(2)O_(3)纳米流体微量润滑对TC4钛合金钻削性能的影响,以切削温度、加工表面质量和刀具磨损为钻削加工性能表征参数,试验结果表明:Al_(2)O_(3)纳米流体微量润滑由于其高导热率,可以有效降低切削区的温度;滚动、抛光和修补效果可以显著提高钻削加工孔的质量,减少刀具磨损,延长刀具的使用寿命。随着Al_(2)O_(3)纳米颗粒浓度的增加,其效果更明显。其中3%浓度的Al_(2)O_(3)纳米流体微量润滑的钻削加工性能最佳,较干式钻削的切削最高温度降低了50.7%;表面粗糙度Ra、Rq、Rz平均值分别降低了62.9%、55.7%和32.4%;后刀面的磨损带宽度VB值降低了41.5%;刀具表面月牙洼磨损、粘结磨损和微崩刃现象明显改善。Minimal Quantity Lubrication(MQL)is a green and sustainable machining technology,and Nanofluid Minimal Quantity Lubrication(NMQL)is a synergistic technology for MQL.Combined with the current research status of NMQL at home and abroad,the effect of Al_(2)O_(3)nanofluid micro-lubrication on the drilling performance of TC4 titanium alloy is studied,and the cutting temperature,machined surface quality and tool wear are taken as the parameters to characterize the drilling and machining performance,and the results of the experiment show that:the Al_(2)O_(3)nanofluid micro-lubrication can reduce the temperature of the cutting zone effectively due to its high thermal conductivity;the effect of rolling,polishing and repairing can significantly improve the quality of drilled holes,reduce tool wear and extend tool life.As the concentration of alumina nanoparticles increases,the effect is more obvious.Among them,3%concentration of Al_(2)O_(3)nanofluid micro-lubrication of drilling processing performance is the best,compared with the dry drilling of the highest temperature of cutting reduced by 50.7%;surface roughness Ra、Rq、Rz average values were reduced by 62.9%,55.7%and 32.4%respectively;the width of the wear zone of the back face of the VB value was reduced by 41.5%;the tool surface of the crescent-shaped puddle wear,bonding wear and micro-chipping The phenomenon of crescent pit wear,bonded wear and micro-chipping on the tool surface was significantly improved.

关 键 词：钛合金 微量润滑 纳米流体 钻削 

分 类 号：U472.9[机械工程—车辆工程]