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电极材料对电加工8418钢表面质量的影响研究

余剑武 沈湘 段文 尚振涛 胡其丰

余剑武, 沈湘, 段文, 尚振涛, 胡其丰. 电极材料对电加工8418钢表面质量的影响研究[J]. 机械科学与技术, 2018, 37(1): 76-80. doi: 10.13433/j.cnki.1003-8728.2018.0112
引用本文: 余剑武, 沈湘, 段文, 尚振涛, 胡其丰. 电极材料对电加工8418钢表面质量的影响研究[J]. 机械科学与技术, 2018, 37(1): 76-80. doi: 10.13433/j.cnki.1003-8728.2018.0112
Yu Jianwu, Shen Xiang, Duan Wen, Shang Zhentao, Hu Qifeng. Study on Influence of Electrode Materials on Surface Integrity in EDM Process of 8418 Steel[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(1): 76-80. doi: 10.13433/j.cnki.1003-8728.2018.0112
Citation: Yu Jianwu, Shen Xiang, Duan Wen, Shang Zhentao, Hu Qifeng. Study on Influence of Electrode Materials on Surface Integrity in EDM Process of 8418 Steel[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(1): 76-80. doi: 10.13433/j.cnki.1003-8728.2018.0112

电极材料对电加工8418钢表面质量的影响研究

doi: 10.13433/j.cnki.1003-8728.2018.0112
基金项目: 

湖南省自然科学基金项目(2015JJ2026)与国家自然科学基金项目(51275165)资助

详细信息
    作者简介:

    余剑武(1968-),教授,博士,博士生导师,研究方向为高速超高速磨削技术及数控装备和特种加工技术,yokenbu@yahoo.com

Study on Influence of Electrode Materials on Surface Integrity in EDM Process of 8418 Steel

  • 摘要: 采用紫铜电极、CuW70在变化的峰值电流(I)、脉冲宽度(ton)电参数下加工8418钢,研究电极材料及电参数对电火花加工表面质量的影响。测得了工件表面粗糙度、微观硬度、白层厚度、微裂纹,结果表明:采用紫铜电极加工时工件表面粗糙度(Ra)及白层厚度(WT)均比采用CuW70时略大,但在精加工放电参数下,电极材料对表面粗糙度的影响区别并不明显。工件表面粗糙度与白层厚度随着峰值电流和脉宽的增大而增大,且峰值电流对白层厚度的增加起主要作用。显微硬度随着与工件表面距离的增大而急剧减小。在低放电能量时,两种电极加工的8418钢表面基本上没有微裂纹,质量较好;在中高放电能量时,紫铜电极加工的工件表面微裂纹的数量比CuW70电极的要多,但裂纹宽度差别不大。
  • [1] Altana T, Lillyb B, Yen Y C, et al. Manufacturing of dies and molds[J]. CIRP Annals, 2001,50(2):404-422
    [2] Souza A F, Albano A E. A case study to evaluate 5 axes milling technology applied for mould manufacturing[C]//9th International Conference on High Speed Machining, March 7-8, 2012, San Sebastian. Eibar:Tekniker IK4, 2012
    [3] Lee H T, Hsu F C, Tai T Y. Study of surface integrity using the small area EDM process with a copper-tungsten electrode[J]. Materials Science and Engineering:A, 2004,364(1-2):346-356
    [4] Lee H T, Tai T Y. Relationship between EDM parameters and surface crack formation[J]. Journal of Materials Processing Technology, 2003,142(3):676-683
    [5] Murray J W, Clare A T. Repair of EDM induced surface cracks by pulsed electron beam irradiation[J]. Journal of Materials Processing Technology, 2012,212(12):2642-2651
    [6] Mohanty A, Talla G, Gangopadhyay S. Experimental investigation and analysis of EDM characteristics of Inconel 825[J]. Materials and Manufacturing Processes, 2014,29(5):540-549
    [7] Pellicer N, Ciurana J, Delgado J. Tool electrode geometry and process parameters influence on different feature geometry and surface quality in electrical discharge machining of AISI H13 steel[J]. Journal of Intelligent Manufacturing, 2011,22(4):575-584
    [8] Tai T Y, Lu S J, Chen Y H. Surface crack susceptibility of electrodischarge-machined steel surfaces[J]. The International Journal of Advanced Manufacturing Technology, 2011,57(9-12):983-989
    [9] Jahan M P, Wong Y S, Rahman M. A study on the fine-finish die-sinking micro-EDM of tungsten carbide using different electrode materials[J]. Journal of Materials Processing Technology, 2009,209(8):3956-3967
    [10] Ekmekci B. Residual stresses and white layer in electric discharge machining (EDM)[J]. Applied Surface Science, 2007,253(23):9234-9240
    [11] Dewangan S, Biswas C K, Gangopadhyay S. Influence of different tool electrode materials on EDMed surface integrity of AISI P20 tool steel[J]. Materials and Manufacturing Processes, 2014,29(11-12):1387-1394
    [12] Hasçalk A, Çaydaş U. Electrical discharge machining of titanium alloy (Ti-6Al-4V)[J]. Applied Surface Science, 2007,253(22):9007-9016
    [13] Singh S, Maheshwari S, Pandey P C. Some investigations into the electric discharge machining of hardened tool steel using different electrode materials[J]. Journal of Materials Processing Technology, 2004,149(1-3):272-277
    [14] Marafona J, Wykes C. A new method of optimising material removal rate using EDM with copper-tungsten electrodes[J]. International Journal of Machine Tools and Manufacture, 2000,40(2):153-164
    [15] 余剑武,段文,何利华,等.CuW70铜钨电极损耗试验研究[J].机械科学与技术,2015,34(7):1016-1018 Yu J W, Duan W, He L H, et al. Experimental investigation of CuW70 copper-tungsten electrode wear[J]. Mechanical Science and Technology for Aerospace Engineering, 2015,34(7):1016-1018(in Chinese)
    [16] He L H, Yu J W, Duan W, et al. Copper-tungsten electrode wear process and carbon layer characterization in electrical discharge machining[J]. The International Journal of Advanced Manufacturing Technology, 2016,85(5-8):1759-1768
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出版历程
  • 收稿日期:  2016-09-20
  • 刊出日期:  2018-01-15

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