Cryogenic Minimal Quantity Lubrication Assisted Cutting Process for Polyimide Materials

doi:10.16183/j.cnki.jsjtu.2021.173

Abstract

Abstract:

The cutting performance of the porous polyimide material assisted by cold air trace lubrication was investigated, and the influence law of cutting process parameters on the cutting effect (cutting force, surface finish quality, and oil content) of the porous material was explored. The results show that compared with dry cutting and low-temperature cold air cutting, the cutting temperature and the machined surface roughness of cold air micro-lubrication cutting are the lowest, and the damage to the porous runner is the smallest. The depth of cut and the feed volume are the factors that have the greatest influence on milling force and surface roughness, respectively. Defects such as chip burrs and tears are the main factors that lead to the increase in surface roughness. The existence of drawing, micro-crack, stacking, and tiny debris on the workpiece surface are the main causes for the decrease in the oil content and oil delivery rate of the material. The optimal machining parameters of the porous polyimide material in the orthogonal experiment with the aid of cold air trace lubrication are v_c=(100±2) mm/min, f_z=(0.3±0.01) mm/r, a_p=(0.8±0.1) mm (v_c is the cutting speed, f_z is the feeding rate, and a_p is the cutting depth). With the assist of the cryogenic minimal quantity lubrication technology, the low damage processing, high oil content, and high oil delivery rate of cage products can be obtained.

Key words: polyimide, cryogenic minimal quantity lubrication (CMQL), milling, low-damage processing technology, oil content

CLC Number:

TG506.3

CAO Zheng, LEI Xuelin, ZHANG Hang, CAI Xiaojiang. Cryogenic Minimal Quantity Lubrication Assisted Cutting Process for Polyimide Materials[J]. Journal of Shanghai Jiao Tong University, 2022, 56(6): 784-793.

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References 27

[1]	JIANG X, BIN Y, MATSUO M. Electrical and mechanical properties of polyimide-carbon nanotubes composites fabricated by in situ polymerization[J]. Polymer, 2005, 46(18): 7418-7424. doi: 10.1016/j.polymer.2005.05.127 URL
[2]	WANG J, ZHOU W, LUO F, et al. Mechanical performance of nanosilica filled quartz fiber/polyimide composites at room and elevated temperatures[J]. Journal of Materials Science, 2017, 52(20): 12207-12220. doi: 10.1007/s10853-017-1341-x URL
[3]	FUSARO R. Lubrication of space systems[J]. Lubrication Engineering, 1994, 51(3): 1-28.
[4]	RUAN H, ZHANG Y, LI S, et al. Effect of temperature on the friction and wear performance of porous oil-containing polyimide[J]. Tribology International, 2021, 157: 106891. doi: 10.1016/j.triboint.2021.106891 URL
[5]	袁松梅, 韩文亮, 朱光远, 等. 绿色切削微量润滑增效技术研究进展[J]. 机械工程学报, 2019, 55(5): 175-185. doi: 10.3901/JME.2019.05.175
	YUAN Songmei, HAN Wenliang, ZHU Guangyuan. Recent progress on the efficiency increasing methods of minimum quantity lubrication technology in green cutting[J]. Journal of Mechanical Engineering, 2019, 55(5): 175-185. doi: 10.3901/JME.2019.05.175
[6]	袁松梅, 刘思, 严鲁涛. 低温微量润滑技术在几种典型难加工材料加工中的应用[J]. 航空制造技术, 2011(14): 45-47.
	YUAN Songmei, LIU Si, YAN Lutao. Application of CA-MQL technology to several typical difficult-to-machine material machining[J]. Aeronautical Manufacturing Technology, 2011(14): 45-47.
[7]	郑祝堂. 论绿色切削加工技术[J]. 新疆石油学院学报, 2001, 13(2): 63-66.
	ZHENG Zhutang. Green machining technology in metal cutting[J]. Journal of Xinjiang Petroleum Institute, 2001, 13(2): 63-66.
[8]	THEW M T, SMYTH I C. Development and performance of oil-water hydrocyclone separators: A review[M]. London: Institute of Materials, Minerals and Mining, 1998.
[9]	袁松梅, 朱光远, 王莉. 绿色切削微量润滑技术润滑剂特性研究进展[J]. 机械工程学报, 2017, 53(17): 131-140. doi: 10.3901/JME.2017.17.131
	YUAN Songmei, ZHU Guangyuan, WANG Li. Recent progress on lubricant characteristics of minimum quantity lubrication (MQL) technology in green cutting[J]. Journal of Mechanical Engineering, 2017, 53(17): 131-140. doi: 10.3901/JME.2017.17.131
[10]	SHARMA A K, TIWARI A K, DIXIT A R. Effects of minimum quantity lubrication (MQL) in machining processes using conventional and nanofluid based cutting fluids: A comprehensive review[J]. Journal of Cleaner Production, 2016, 127: 1-18. doi: 10.1016/j.jclepro.2016.03.146 URL
[11]	WANG Y, LI C, ZHANG Y, et al. Experimental evaluation of the lubrication properties of the wheel/workpiece interface in minimum quantity lubrication (MQL) grinding using different types of vegetable oils[J]. Journal of Cleaner Production, 2016, 127: 487-499. doi: 10.1016/j.jclepro.2016.03.121 URL
[12]	SU Y, GONG L, LI B, et al. Performance evaluation of nanofluid MQL with vegetable-based oil and ester oil as base fluids in turning[J]. The International Journal of Advanced Manufacturing Technology, 2015, 83(9/10/11/12): 2083-2089. doi: 10.1007/s00170-015-7730-x URL
[13]	WANG Y, LI C, ZHANG Y, et al. Experimental evaluation of the lubrication properties of the wheel/workpiece interface in MQL grinding with different nanofluids[J]. Tribology International, 2016, 99: 198-210. doi: 10.1016/j.triboint.2016.03.023 URL
[14]	贺爱东. CMQL切削机理及加工表面残余应力调控研究[D]. 广东: 华南理工大学, 2018.
	HE Aidong. Investigation on processing mechanism and control of residual stress in CMQL machining[D]. Guangdong: South China University of Technology, 2018.
[15]	陈建升, 范琳, 陶志强, 等. 短切石英纤维/聚酰亚胺复合材料的制备与性能[J]. 复合材料学报, 2006, 23(5): 79-83.
	CHEN Jiansheng, FAN Lin, TAO Zhiqiang, et al. Preparation and properties of chopped quartz fiber/PMR polyimide composites[J]. Acta Materiae Compositae Sinica, 2006, 23(5): 79-83.
[16]	AZMI A I, LIN R J T, BHATTACHARYYA D. Machinability study of glass fibre-reinforced polymer composites during end milling[J]. The International Journal of Advanced Manufacturing Technology, 2012, 64(1/2/3/4): 247-61. doi: 10.1007/s00170-012-4006-6 URL
[17]	WANG F, LIU J, SHU Q. Optimization of cryogenic milling parameters for AFRP[J]. The International Journal of Advanced Manufacturing Technology, 2017, 91(9/10/11/12): 3243-3252. doi: 10.1007/s00170-017-0003-0 URL
[18]	WANG F, BIN Z, WANG Y. Milling force of quartz fiber-reinforced polyimide composite based on cryogenic cooling[J]. International Journal of Advanced Manufacturing Technology, 2019, 104(5/6/7/8): 2363-2375. doi: 10.1007/s00170-019-04050-0 URL
[19]	NOR KHAIRUSSHIMA M K, CHE HASSAN C H, JAHARAH A G, et al. Effect of chilled air on tool wear and workpiece quality during milling of carbon fibre-reinforced plastic[J]. Wear, 2013, 302(1): 1113-1123. doi: 10.1016/j.wear.2013.01.043 URL
[20]	EL-TAWEEL T A, ABDEL-MAABOUD A M, AZZAM B S, et al. Parametric studies on the CO₂ laser cutting of Kevlar-49 composite[J]. The International Journal of Advanced Manufacturing Technology, 2008, 40(9/10): 907-917. doi: 10.1007/s00170-008-1412-x URL
[21]	SHANMUGAM D K, CHEN F L, SIORES E, et al. Comparative study of jetting machining technologies over laser machining technology for cutting composite materials[J]. Composite Structures, 2002, 57(1): 289-296. doi: 10.1016/S0263-8223(02)00096-X URL
[22]	DHAKAL H N, ISMAIL S O, OJO S O, et al. Abrasive water jet drilling of advanced sustainable bio-fibre-reinforced polymer/hybrid composites: A comprehensive analysis of machining-induced damage responses[J]. The International Journal of Advanced Manufacturing Technology, 2018, 99(9): 2833-2847. doi: 10.1007/s00170-018-2670-x URL
[23]	魏佳平, 孙小波, 谢鹏飞, 等. 成形工艺对多孔聚酰亚胺复合材料性能的影响[J]. 轴承, 2013(11): 33-35.
	WEI Jiaping, SUN Xiaobo, XIE Pengfei, et al. Influence of forming process on the properties of porous polyimide composites[J]. Bearing, 2013(11): 33-35.
[24]	李如春. 浅谈工程塑料的切削加工[J]. 轻纺工业与技术, 2020, 49(9): 150-151.
	LI Ruchun. On cutting of engineering plastics[J]. Light and Textile Industry and Technology, 2020, 49(9): 150-151.
[25]	杨永喜. 聚酰亚胺基多孔含油材料的制备及改性研究[D]. 哈尔滨: 哈尔滨工业大学, 2017.
	YANG Yongxi. Research on preparation and modification of polyimide based porous oil-bearing material[D]. Harbin: Harbin Institute of Technology, 2017.
[26]	李瑞芬. 塑料的机械加工[M]. 北京: 化学工业出版社, 2014.
	LI Ruifen. Mechanical processing of plastics[M]. Beijing: Chemical Industry Press, 2014.
[27]	邓四二, 谢鹏飞, 杨海生, 等. 高速角接触球轴承保持架柔体动力学分析[J]. 兵工学报, 2011, 32(5): 625-31.
	DENG Sier, XIE Pengfei, YANG Haisheng, et al. Flexible-body dynamics analysis on cage of high-speed angular contact ball bearing[J]. Acta Armamentarii, 2011, 32(5): 625-31.

材料物理参数	工件	刀具
密度ρ/(kg·m^-3)	1400	14500
弹性模量E/GPa	3.61	640
泊松比ν	0.34	0.22
热传导率k/(W·m^-1·K^-1)	0.85	75.4

参数	取值
入口压力/MPa	0.69
耗气量/(L·min^-1)	420
制冷量/W	293
冷气温度/℃	-5~-10
耗油量/(mL·h^-1)	50~400
油桶容积/mL	600

组号	切削润滑条件	切削速度v_c/ (m·min^-1)	进给量f_z/ (mm·r^-1)	轴向深度 a_p/mm	径向深度 a_e/mm
A	干切削	90	0.2	1.0	4
B	低温冷风切削	90	0.2	1.0	4
C	CMQL	90	0.2	1.0	4

组号	切削速度 v_c/(m·min^-1)	进给量 f_z/(mm·r^-1)	轴向深度 a_p/mm	径向深度 a_e/mm
1	75	0.10	0.5	4
2	75	0.25	1.0	4
3	75	0.40	1.5	4
4	100	0.10	1.0	4
5	100	0.25	1.5	4
6	100	0.40	0.5	4
7	125	0.10	1.5	4
8	125	0.25	0.5	4
9	125	0.40	1.0	4

实验指标	v_c/ (m·min^-1)	f_z/ (mm·r^-1)	a_p/mm	综合占比/%
切削力	100	0.4	0.5	10
表面粗糙度	100	0.1	0.5	30
切屑形态	75	0.1	0.5	10
微观形貌	75	0.4	1.5	10
含油率	75	0.4	1.0	40
最佳铣削参数	85	0.28	0.8	-