压印模具表面织构电火花成形工艺参数的分析

doi:10.13251/j.issn.0254-6051.2022.03.004

金属热处理 ›› 2022, Vol. 47 ›› Issue (3): 20-27.DOI: 10.13251/j.issn.0254-6051.2022.03.004

压印模具表面织构电火花成形工艺参数的分析

梁怀南¹, 刘志奇¹, 陈东良¹, 宋建丽², 林乃明³

1.太原科技大学机械工程学院, 山西太原 030024;
2.北京信息科技大学仪器科学与光电工程学院, 北京 100192;
3.太原理工大学新型碳材料研究所, 山西太原 030024

收稿日期:2021-10-18 修回日期:2021-12-21 出版日期:2022-03-25 发布日期:2022-04-22
通讯作者: 刘志奇,教授,博士,E-mail:liuzhiqi@tyust.edu.cn
作者简介:梁怀南(1995—),男,硕士研究生,主要研究方向为材料表面改性,E-mail:847236348@qq.com。
基金资助:
国家自然科学基金(51975396);山西省留学回国人员科技活动择优项目(20200023);山西省应用基础研究计划(201901D111063);山西省高等学校科技成果转化培育项目(2020CG020);山西省回国留学人员科研项目(2021-138)

Analysis of EDM process parameters on imprint mould surface texture

Liang Huainan¹, Liu Zhiqi¹, Chen Dongliang¹, Song Jianli², Lin Naiming³

1. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan Shanxi 030024, China;
2. School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China;
3. Institute of New Carbon Materials, Taiyuan University of Technology, Taiyuan Shanxi 030024, China

Received:2021-10-18 Revised:2021-12-21 Online:2022-03-25 Published:2022-04-22

摘要/Abstract

摘要： 在石墨电极表面制备了直径分别为ø100、ø200和ø300 μm且具有规则形貌的圆形微凹坑阵列,并使用该电极在45钢表面利用电火花成形工艺(Electrical discharge machining,EDM)制备出微凸起阵列压印模具,研究了加工电流对其表面性能的影响。采用超景深显微镜和扫描电镜对经电火花加工处理后的石墨电极和45钢试样的表面形貌进行了分析,同时采用洛氏硬度计、粗糙度测试仪和精度为0.01 mg的电子天平秤等设备对45钢表面微凸起阵列进行了检测,并讨论了加工电流对45钢的材料去除率(Material removal rate,MRR)和石墨电极的电极耗损率(Electrode wear rate,EWR)之间的影响规律。结果表明,电火花反刻原理可以在45钢表面形成尺寸相对应的微凸起阵列形貌,并得到较高的表面显微硬度和表面粗糙度值,随着电火花加工电流的增大而增大,其中,ø200 μm微凸起试样得到了最大显微硬度,为34 HRC,同时,ø300 μm微凸起试样得到了最大表面粗糙度值12.56 μm。此外,当试样微凹坑或微凸起直径一定时,随着加工电流的增大,MRR和EWR值也会随之增大。

关键词: 电火花成形, 激光加工, 45钢, 石墨电极, 微凹坑, 微凸起

Abstract: Circular micropit arrays with diameters of ø100, ø200 and ø300 μm and regular morphologies were prepared on the surface of graphite electrodes, the electrode was used to fabricate a micro bulge array imprint mold on the surface of 45 steel by electrical discharge machining (EDM). Effect of processing current on its surface properties was investigated. The surface morphologies of graphite electrodes and the 45 steel specimens treated by EDM were analyzed by means of ultra-depth of field microscope and scanning electron microscope. At the same time, Rockwell hardness tester, roughness tester and electronic balance scale with an accuracy of 0.01 mg were used to detect the micro bulge array on the surface of the 45 steel. Effect of processing current on material removal rate (MRR) of the 45 steel and the electrode wear rate (EWR) of graphite electrode was discussed. The results show that, the micro bulge array with corresponding size is successfully formed on the surface of the 45 steel by the principle of EDM reverse etching, and the higher surface microhardness and surface roughness values are obtained, which increase with the increase of EDM current, among them, the specimen with ø200 μm micro-bulge obtains a maximum microhardness of 34 HRC, and the specimen with ø300 μm micro-bulge obtains a maximum surface roughness of 12.56 μm. In addition, when the diameter of the micro-pits or micro-bulges on the specimens is constant, the MRR and EWR values also increase with the increase of processing current.

Key words: EDM, laser processing, 45 steel, graphite electrode, micro pit, micro bulge

中图分类号:

TG661

梁怀南, 刘志奇, 陈东良, 宋建丽, 林乃明. 压印模具表面织构电火花成形工艺参数的分析[J]. 金属热处理, 2022, 47(3): 20-27.

Liang Huainan, Liu Zhiqi, Chen Dongliang, Song Jianli, Lin Naiming. Analysis of EDM process parameters on imprint mould surface texture[J]. Heat Treatment of Metals, 2022, 47(3): 20-27.

参考文献

[1]连峰. 45钢电火花成型表面组织结构的研究[J]. 表面技术, 2005(4): 27-29.
Lian Feng. Study on surface microstructure of 45 steel by EDM[J]. Surface Technology, 2005(4): 27-29.
[2]翟力军, 伏金娟, 刘建勇, 等. 电火花成形加工技术的现状与挑战[J]. 金属加工(冷加工), 2016(21): 1-6.
Zhai Lijun, Fu Jinjuan, Liu Jianyong, et al. Status and challenges of EDM technology[J]. Metal Processing (Cold Working), 2016 (21): 1-6.
[3]杨晓欣, 郭常宁, 裴景玉. 电火花成形原理及工艺应用[M]. 北京: 国防工业出版社, 2015: 153-167.
Yang Xiaoxin, Guo Changning, Pei Jingyu. Principle and process application of EDM[M]. Beijing: National Defense Industry Press, 2015: 153-167.
[4]Dursun T, Soutis C. Recent developments in advanced aircraft aluminium alloys[J]. Materials and Design, 2014, 56: 862-871.
[5]Kozochin M P, Porvatov A N, Grigorev S N. Vibroacoustic monitoring of the major parameters of electrical discharge machining[J]. Measurement Techniques, 2017, 59(11): 1228-1233.
[6]Scaraggi M, Mezzapesa F P, Carbone G, et al. Minimize friction of lubricated laser-microtextured-surfaces by tuning microholes depth[J]. Tribology International, 2014, 75(2): 123-127.
[7]Jones M H, Scott D. Industrial Tribology: The Practical Aspects of Friction, Lubrication and Wear[M]. Elsevier, 1983.
[8]Singh D, Singh N, Awasthi R. Effect of surface texture parameters on the performance of finite slider bearing[J]. Materials Today, 2018, 362(25): 19349-19358.
[9]Byun J W, Shin H S, Kwon M H, et al. Surface texturing by micro ECM for friction reduction[J]. International Journal of Precision Engineering and Manufacturing, 2010, 11(5): 747-753.
[10]Vilhena L M, Ramlho A, Cavaleiro A. Grooved surface texturing by electrical discharge machining (EDM) under different lubrication regimes[J]. Lubrication Science, 2017, 29(7): 493-501.
[11]靳广林, 虞宙, 胡俊. 激光表面微造型与凸起形貌摩擦性能研究[J]. 应用激光, 2015, 35(5): 536-540.
Jin Guanglin, Yu Zhou, Hu Jun. Study on friction properties of laser surface micro modeling and convex topography[J]. Applied Laser, 2015, 35(5): 536-540.
[12]Hassan M A, Saleh M, Takakura N, et al. Effect of bulge shape on wrinkling formation and strength of stainless steel thin sheet[J]. Materials and Design, 2012, 42: 37-45.
[13]杨志伟, 云乃彰, 陈建宁. 微凸起及微坑结构的放电加工基础性研究[J]. 微细加工技术, 2008(1): 59-64.
Yang Zhiwei, Yun Naizhang, Chen Jianning. Basic research on EDM of micro bulge and micro pit structure[J]. Micromachining Technology, 2008(1): 59-64.
[14]Chen Xiong, Wang Zhenlong, Wang Yukui, et al. Micro sinking electro-discharge machining of complex 3D micro-cavity using in-situ milled graphite microform electrode[J]. Journal of Materials Processing Technology, 2019, 270: 206-215.
[15]欧阳波仪. 不同电极材料对电火花加工表面粗糙度影响的试验研究[J]. 机械设计与制造, 2017(11): 14-16.
Ouyang Boyi. Experimental research on the influence of different electrode materials on the surface roughness of EDM[J]. Machinery Design and Manufacturing, 2017(11): 14-16.
[16]Bodukuri A K, Chandramouli S, Eawaraiah K, et al. Experimental investigation and optimization of EDM process parameters on aluminum metal matrix composite[J]. Materials Today, 2018, 5(11): 24731-24740.
[17]Arvind K, Abhishek K, Rai R N. Synthesis of stir-cast AA7050/5%B4C composite and optimization of EDM response parameters using taguchi analysis[J]. Key Engineering Materials, 2020, 844: 104-113.
[18]张昭瑞, 谢军, 朱磊, 等. 黑腔芯轴平台微细电火花加工技术[J]. 强激光与粒子束, 2014, 26(12): 126-129.
Zhang Zhaorui, Xie Jun, Zhu Lei, et al. Micro-EDM machining technology of black cavity mandrel platform[J]. High Power Laser and Particle Beam, 2014, 26(12): 126-129.
[19]Khan F, Kumar J, Soota T. Optimization of EDM process parameter for stainless steel D3[J]. Materials Today: Proceedings, 2020, 25: 635-638.
[20]Hema P, Naveena P, Aruna K. Machining of square holes by using die-sinking EDM and optimization of the process parameters[J]. Materials Today: Proceedings, 2020, 22: 2751-2763.

压印模具表面织构电火花成形工艺参数的分析

Analysis of EDM process parameters on imprint mould surface texture

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 10

编辑推荐

Metrics

本文评价

[1]	闫朝辉, 汪友华, 刘成成, 武仕朴. 横向磁通感应加热激励参数对带材温度的影响及加热器优化[J]. 金属热处理, 2021, 46(5): 87-94.
[2]	张展展, 宁家庆, 左玲立, 廖海洋. 工艺参数对WC颗粒增强表层复合材料与钢基界面组织的影响[J]. 金属热处理, 2021, 46(11): 131-136.
[3]	张馨月, 杨明维, 冯运莉, 曹阔, 李杰. 退火时间对伪共析45钢温轧后组织与性能的影响[J]. 金属热处理, 2020, 45(4): 132-136.
[4]	刘环，揭晓华，张艳梅，罗松，卢国辉. 45钢表面微纳米多尺度结构制备及抗硫化粘污性能研究[J]. 金属热处理, 2017, 42(4): 159-162.
[5]	王长健. 45钢锥套淬火裂纹失效分析[J]. 金属热处理, 2017, 42(4): 204-207.
[6]	蒋鹏1，张璐莹1，方江涛2. 基于声发射的马氏体相变动力学特性研究[J]. 金属热处理, 2015, 40(8): 55-58.
[7]	王辉，陈晓龙. 45钢表面激光合金化原位生成TiN陶瓷相的组织及性能[J]. 金属热处理, 2015, 40(11): 72-75.
[8]	王啸, 吴从跃, 孙梦龙, 谢春生. QPQ处理对45钢组织与性能的影响[J]. 金属热处理, 2014, 39(8): 92-95.
[9]	原卓浩, 王福明韦士来叶高旗. 含Cr低合金结构钢焊接粗晶热影响区组织与冲击性能[J]. 金属热处理, 2014, 39(6): 1-4.
[10]	陈虎城, 魏德强, 王荣, 史绍远. 45钢表面电子束相变硬化过程中组织转变数值模拟[J]. 金属热处理, 2014, 39(6): 130-135.