磨料水射流二次逆向切割对断面质量的提升研究
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摘要
针对磨料水射流切割过程中存在的拖尾余纹、切缝锥度和切割留尾问题,基于磨料水射流切割理论,设计了3组不同因素组合下的单次正向切割、单次1/2速度正向切割和二次逆向切割试验,探讨了3种不同切割方式下的断面形貌产生机理,并对试验结果进行对比分析。结果表明,二次逆向切割可降低表面粗糙度约52%～85%,可降低切缝锥度约66%～72%,同时可消除切割留尾。因此,高压磨料水射流采用二次逆向切割的方式可以显著提高磨料水射流切割工件的断面质量。
According to the quality problems like trailing stripe, kerf taper and cutting tail in the abrasive water jet cutting(AWJC) processes, three experimental groups were designed under different combinations of cutting process parameters, including single-positive cutting, single half-speed-positive cutting and secondary-reverse cutting experiments based on the theory of AWJC. The mechanism of the section morphology under three different cutting modes was fully discussed, and the experimental results were deeply compared and analyzed. The results show that secondary-reverse cutting may reduce the surface roughness about 52%～85% and the kerf taper about 66%～72%, with efficient elimination of the cutting tail. Therefore, the operation, adopting the method of secondary reverse cutting may significantly improve the section surface quality of the target workpiece in AWJC.
According to the quality problems like trailing stripe, kerf taper and cutting tail in the abrasive water jet cutting(AWJC) processes, three experimental groups were designed under different combinations of cutting process parameters, including single-positive cutting, single half-speed-positive cutting and secondary-reverse cutting experiments based on the theory of AWJC. The mechanism of the section morphology under three different cutting modes was fully discussed, and the experimental results were deeply compared and analyzed. The results show that secondary-reverse cutting may reduce the surface roughness about 52%～85% and the kerf taper about 66%～72%, with efficient elimination of the cutting tail. Therefore, the operation, adopting the method of secondary reverse cutting may significantly improve the section surface quality of the target workpiece in AWJC.
引文
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[14] GUPTA V,PANDEY P M,GARG M P,et al.Minimization of Kerf Taper Angle and Kerf Width Using Taguchi’s Method in Abrasive Water Jet Machining of Marble[J].Procedia Materials Science,2014,6:140-149.
[15] ALBERDI A,Surez A,ARTAZA T,et al.Composite Cutting with Abrasive Water Jet[J].Procedia Engineering,2013,63:421-429.
[16] GUPTA V,GARG M P,BATRA N K,et al.Analysis of Kerf Taper Angle in Abrasive Water Jet Cutting of Makrana White Marble[J].Asian Journal of Engineering and Applied Technology,2013,2(2):35-39.
[2] 何雪明,陈泽华,武美萍,等.基于磨料水射流的螺杆转子加工新方法研究[J].中国机械工程,2016,27(19):2581-2588.HE Xueming,CHEN Zehua ,WU Meiping ,et al.Research on a New Method for Screw Rotor Processing Using Abrasive Water Jet[J].China Mechanical Engineering,2016,27(19):2581-2588.
[3] 吴海,刘波,王国涛,等.磨料水射流切割技术分析及研究[J].机械管理开发,2010,25(4):9-10.WU Hai,LIU Bo,WANG Guotao,et al.Research and Analysis of Abrasive Water Jet Cutting Technology[J].Mechanical Management and Development,2010,25(4):9-10.
[4] HASHISH M.A Modeling Study of Metal Cutting with Abrasive Waterjets[J].Journal of Engineering Materials & Technology Transactions of the ASME,1984,106(1):88.
[5] SIORES E,CHEN L,WONG W.C.K,et al.Improving Surface Finish Generated by the Abrasive Waterjet Process[C]//Advances in Abrasive Technology.Swinburne,1997:187-191.
[6] CHEN L,SIORES E,WONG W C K.Optimising Abrasive Waterjet Cutting of Ceramic Materials[J].Journal of Materials Processing Technology,1998,74(1/3):251-254.
[7] XU S,WANG J.A Study of Abrasive Waterjet Cutting of Alumina Ceramics with Controlled Nozzle Oscillation[J].International Journal of Advanced Manufacturing Technology,2006,27(7/8):693-702.
[8] LEMMA E,CHEN L,SIORES E,et al.Optimising the AWJ Cutting Process of Ductile Materials Using Nozzle Oscillation Technique[J].International Journal of Machine Tools & Manufacture,2002,42(7):781-789.
[9] 杨林,张凤华,唐川林.磨料水射流切割断面质量的研究[J].机械设计与研究,2003,19(5):54-56.YANG Lin,ZHANG Fenghua,TANG Chuanlin.A Study of the Surface Quality Cut by Abrasive Waterjet[J].Machine Design and Research,2003,19(5):54-56.
[10] 冯衍霞,黄传真,WANG J,等.磨料水射流加工技术的研究现状[J].机械工程师,2005,25(6):17-19.FENG Yanxia,HUANG Chuanzhen,WANG J,et al.The Research Situation of Abrasive Waterjet Machining Technology[J].Mechanical Engineer,2005,25(6):17-19.
[11] 赵永赞,高凤阳,王春雷,等.基于后混合式磨料水射流切割机理的探讨[J].常熟高专学报,2004,18(2):50-53.ZHAO Yongzan,GAO Fengyang,WANG Chunlei.Experimental Research on the Mechanism of Cutting Materials with Rear Fixed Abrasive Efflux[J].Journal of Changshu College,2004,18(2):50-53.
[12] MM I W,AZMI A I,LEE C C,et al.Kerf Taper and Delamination Damage Minimization of FRP Hybrid Composites under Abrasive Water-jet Machining[J].International Journal of Advanced Manufacturing Technology,2018,94(5/8):1727-1744.
[13] HASHISH M.Visualization of the Abrasive-waterjet Cutting Process[J].Experimental Mechanics,1988,28(2):159-169.
[14] GUPTA V,PANDEY P M,GARG M P,et al.Minimization of Kerf Taper Angle and Kerf Width Using Taguchi’s Method in Abrasive Water Jet Machining of Marble[J].Procedia Materials Science,2014,6:140-149.
[15] ALBERDI A,Surez A,ARTAZA T,et al.Composite Cutting with Abrasive Water Jet[J].Procedia Engineering,2013,63:421-429.
[16] GUPTA V,GARG M P,BATRA N K,et al.Analysis of Kerf Taper Angle in Abrasive Water Jet Cutting of Makrana White Marble[J].Asian Journal of Engineering and Applied Technology,2013,2(2):35-39.