Influence of porous structure on the machining performance of micro EDM

被引：22

作者：

Zou, Rimao ^{[1
]}

Yu, Zuyuan ^{[1
]}

Li, Wei ^{[1
]}

Guo, Meigang ^{[1
]}

Li, Jianzhong ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Mech Engn, Minist Educ, Key Lab Precis & Nontradit Machining Technol, Dalian, Peoples R China

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2016年 / 232卷

基金：

新加坡国家研究基金会; 美国国家科学基金会;

关键词：

Micro EDM; Porous metal; Machining performance; Micro structure;

D O I：

10.1016/j.jmatprotec.2016.01.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Porous metals are widely used in acoustic or heat absorbing material, heat exchanger, catalysis and biochemical products. Porous metals are available to be processed by electrical discharge machining (EDM). However, the relationship between machining parameters and performance is unclear. In this investigation, extensive experiments are conducted on solid stainless steel 304 and porous stainless steel 304 with different pore sizes. Material removal rate (MRR) and tool wear ratio (TWR) are used to evaluate the machining performance of micro EDM. It was found that the machining of porous metal has a higher MRR and lower TWR than those of solid one. It was also found that the machining performance is significantly affected when the size of porous metal is close to the discharge gap. The abilities of debris removal and machining in porous metal machining by EDM are proposed to analyze this phenomenon. Experimental results match the calculated values well. It is helpful to select proper machining parameters of micro EDM to process porous metals. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：43 / 51

页数：9

共 10 条

[1] A study on pressure drop and heat transfer in open cell metal foams for jet engine applications [J].

Azzi, W. ;

Roberts, W. L. ;

Rabiei, A. .

MATERIALS & DESIGN, 2007, 28 (02) :569-574

[2] Manufacture, characterisation and application of cellular metals and metal foams [J].

Banhart, J .

PROGRESS IN MATERIALS SCIENCE, 2001, 46 (06) :559-U3

[3] Thermal conductivity bounds for isotropic, porous materials [J].

Carson, JK ;

Lovatt, SJ ;

Tanner, DJ ;

Cleland, AC .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2005, 48 (11) :2150-2158

[4] Recent Researches in Micro Electrical Machining [J].

Chung, Do Kwan ;

Shin, Hong Shik ;

Park, Min Soo ;

Kim, Bo Hyun ;

Chu, Chong Nam .

INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING, 2011, 12 (02) :371-380

[5] Processing and mechanical properties of porous 316L stainless steel for biomedical applications [J].

Dewidar, Montasser M. ;

Khalil, Khalil A. ;

Lim, J. K. .

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2007, 17 (03) :468-473

[6]

Liu P.S., 2004, Introduction to porous materials

[7] A simple method for accurate determination of porosity using ideal gas law [J].

Mohazzabi, Pirooz ;

Hill, Wendell C. .

JOURNAL OF POROUS MATERIALS, 2013, 20 (02) :441-445

[8] Novel Highly Porous Metal Technology in Artificial Hip and Knee Replacement: Processing Methodologies and Clinical Applications [J].

Muth, John ;

Poggie, Matthew ;

Kulesha, Gene ;

Meneghini, R. Michael .

JOM, 2013, 65 (02) :318-325

[9] Micro and nano machining by electro-physical and chemical processes [J].

Rajurkar, K. P. ;

Levy, G. ;

Malshe, A. ;

Sundaram, M. M. ;

McGeough, J. ;

Hu, X. ;

Resnick, R. ;

DeSilva, A. .

CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2006, 55 (02) :643-666

[10]

Yu Z., 2007, SCIENCEPAPER ONLINE, V2, P214

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