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浙江大学学报(工学版)
浙江大学学报(工学版)  2024, Vol. 58 Issue (11): 2320-2329    DOI: 10.3785/j.issn.1008-973X.2024.11.013
机械与环境工程     
磁场辅助纳米流体气雾渗透沉积特性及其加工性能
吕涛1,2(),于爱兵2,许雪峰3,*(),马敏海1,赵丛林4
1. 宁波职业技术学院 中国轻工业塑料模具工程技术研究中心，浙江 宁波 315800
2. 宁波大学 机械工程与力学学院，浙江 宁波 315211
3. 浙江工业大学 特种装备制造与先进加工技术教育部重点实验室，浙江 杭州 310023
4. 兰州理工大学 机电工程学院，甘肃 兰州 730050
Penetration and deposition characteristics and machining performance of magnetic field assisted nanofluid spray lubrication
Tao LV1,2(),Aibing YU2,Xuefeng XU3,*(),Minhai MA1,Conglin ZHAO4
1. China Light Industry Plastic Mold Engineering Technology Research Center, Ningbo Polytechnic, Ningbo 315800, China
2. School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China
3. Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology, Ministry of Education, Zhejiang University of Technology, Hangzhou 310023, China
4. School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China
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摘要：

为了改善机加工过程中油基气雾润滑形成的高油雾质量浓度环境，提出磁场辅助纳米流体气雾润滑技术. 该技术可以大幅降低作业环境的油雾质量浓度. 搭建磁场辅助气雾装置，配制水基Fe3O4纳米流体切削液. 研究磁场影响下纳米流体气雾的渗透和沉积特性. 对比考察磁化气雾在铣削430不锈钢过程中的油雾质量浓度和加工性能. 结果表明，磁场影响下的纳米流体气雾渗透能力提升，沉积量增多. 当磁感应强度为60 mT时，纳米流体气雾润滑下的油雾质量浓度、刀具磨损量、切削力和粗糙度分别比植物油气雾润滑低66.3%、22.7%、14.6%和23.4%. 磁场影响下的纳米流体易沉积且渗透进刀-屑接触界面的毛细微缝中发挥润滑冷却作用，抑制油雾的弥散.
关键词： 磁场辅助;  气雾润滑;  渗透;  油雾质量浓度;  刀具磨损;  切削力;  粗糙度    
Abstract:

A magnetic field assisted nanofluid spray lubrication technology was proposed in order to improve the high oil mist mass concentration environment formed by oil-based spray lubrication during machining. The innovation method can significantly reduce the oil mist mass concentration in the working environment. A magnetic field assisted spray device was constructed, and a water-based Fe3O4 nanofluid was prepared as cutting fluid. The penetration and deposition characteristics of nanofluid droplets under different magnetic induction intensities were analyzed. The oil mist mass concentration and machining performance of magnetized nanofluid mist during milling with 430 stainless steel were comparatively analyzed. Results show that the penetrability of nanofluid droplet was improved and the deposition amount was increased under the influence of magnetic field. The oil mist mass concentration, tool wear, cutting force, and roughness of nanofluid spray lubrication with 60 mT magnetic induction intensity were 66.3%, 22.7%, 14.6%, and 23.4% lower than those of vegetable oil spray lubrication, respectively. The nanofluid mist is easy to deposit under the influence of magnetic field and penetrate into the capillary micro crevice in the tool-chip contact interface to play a lubricating and cooling role and inhibit the dispersion of the oil mist.
Key words: magnetic field assistance    spray lubrication    penetration    oil mist mass concentration    tool wear    cutting force    roughness
收稿日期: 2023-10-30 出版日期: 2024-10-23
CLC:  TG 506  
基金资助: 国家自然科学基金资助项目（52275468）；国家重点研发计划资助项目（2020YFB2010600）；宁波职业技术学院2022年度国家级科研项目培育课题（NZ22GJ003）.
通讯作者: 许雪峰     E-mail: tomtaolv@163.com;xuxuefeng@zjut.edu.cn
作者简介: 吕涛（1992—），男，副教授，博士，从事精密及特种加工技术、绿色加工工艺技术的研究. orcid.org/ 0009-0004-8448-9401. E-mail：tomtaolv@163.com
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吕涛
于爱兵
许雪峰
马敏海
赵丛林

引用本文:

吕涛,于爱兵,许雪峰,马敏海,赵丛林. 磁场辅助纳米流体气雾渗透沉积特性及其加工性能[J]. 浙江大学学报(工学版), 2024, 58(11): 2320-2329.

Tao LV,Aibing YU,Xuefeng XU,Minhai MA,Conglin ZHAO. Penetration and deposition characteristics and machining performance of magnetic field assisted nanofluid spray lubrication. Journal of ZheJiang University (Engineering Science), 2024, 58(11): 2320-2329.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2024.11.013    或    https://www.zjujournals.com/eng/CN/Y2024/V58/I11/2320

图 1  mMQL系统应用于铣削时的理论结构
图 2  改造后的喷嘴
图 3  液滴采集装置
图 4  沉积实验平台的示意图
图 5  油雾质量浓度检测装置
项目条件
机床VDF-850数控加工中心
工件材料AISI 430 不锈钢
尺寸为210 mm×160 mm×220 mm
刀柄端铣刀柄, 直径为35 mm, 三齿
型号为TAP400R C32-35-200L
刀具硬质合金涂层刀具
型号为APMT160408PDER-H08
切削参数主轴转速: 1 000 r/min;
进给率: 0.10 mm/tooth;
轴向切深: 1 mm;
径向切深: 5 mm;
单次切削长度: 210 mm
冷却方式MQL和mMQL
切削液LB-2000植物油
水基Fe3O4纳米流体
MQL/mMQL 喷雾参数磁感应强度: 0、20、40、60、80、100 mT;
体积流量: 20 mL/h;
气压: 0.4 MPa;
喷嘴距离: 20 mm
表 1  铣削加工的实验条件
图 6  不同磁感应强度下纳米流体液滴的接触角
图 7  不同磁感应强度下纳米流体的表面张力
图 8  不同磁感应强度下纳米流体的动力黏度
图 9  毛细渗透模型
图 10  不同磁感应强度下纳米流体的渗透深度
图 11  不同磁感应强度下纳米流体的毛细驱动压力
图 12  不同磁感应强度下的纳米流体雾化液滴分布
图 13  不同磁感应强度下的纳米流体雾化液滴粒径
图 14  不同磁感应强度下的纳米流体油雾沉积量
图 15  不同润滑条件下的油雾质量浓度
图 16  不同润滑条件下的刀具后刀面磨损变化
图 17  不同润滑条件下刀具后刀面磨损的光学显微图
图 18  不同润滑条件下的切削力变化
图 19  不同润滑条件下的工件表面粗糙度变化
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