Effect of aluminium and chromium powder mixed dielectric fluid on electrical discharge machining effectiveness

IF 2.8 3区工程技术 Q2 ENGINEERING, MANUFACTURING

Advances in Production Engineering & Management Pub Date : 2019-09-30 DOI:10.14743/apem2019.3.330

Manoj Modi, G. Agarwal

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引用次数: 8

Abstract

This article studied the impacts of using different powders on the productivity of electro discharge machining (EDM) of Nimonic 8OA alloy. The powders used for experiments are chromium (Cr) and aluminium (Al), though these powders are in contrasts in their thermo‐physical characteristics. With the mixing of these powders in dielectric fluid, effect on surface roughness (SR), material removal rate (MRR), and mechanism of the machining process have been studied in this research work. On going through the results of experi‐ ments, it was observed that even volumetric proportion of powders, size of molecules, its density, electric resistance, and heat conductivity of additives were vital parameters that altogether influenced the productivity of powder mixed‐electro discharge machining (PMEDM) process. With addition of prop‐ er ratio of powders in dielectric fluid, it enhanced the material removal rate, and consequently, reduced the surface roughness. Under a similar molecule volumetric proportion tests, the minutes suspended molecule size of powder prompted the largest material removal rate and consequently, the surface roughness increased. Conclusion is that adding chromium powder improves to the highest material removal rate, but poor surface finish while adding aluminium powder has the reverse effects. © 2019 CPE, University of Maribor. All rights reserved.

查看原文本刊更多论文

铝铬粉混合介质液对电火花加工效果的影响

研究了不同粉末对Nimonic 8OA合金电火花加工生产率的影响。用于实验的粉末是铬(Cr)和铝(Al)，尽管这些粉末在热物理特性上是相反的。在介质流体中混合这些粉末，研究了它们对表面粗糙度(SR)、材料去除率(MRR)的影响以及加工过程的机理。通过对实验结果的分析，发现粉末的体积比、分子的大小、密度、电阻和添加剂的导热性是影响粉末混合电火花加工(PMEDM)生产率的重要参数。在介质流体中加入prop - er比的粉末，可以提高材料的去除率，从而降低表面粗糙度。在相似的分子体积比测试中，粉末悬浮分子粒径越小，材料去除率越大，表面粗糙度越大。综上所述，添加铬粉对材料去除率的提高最高，而添加铝粉对材料表面光洁度的影响则相反。©2019马里博尔大学CPE。版权所有。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Production Engineering & Management ENGINEERING, MANUFACTURINGMATERIALS SCIENC-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

5.90

自引率

22.20%

发文量

期刊介绍： Advances in Production Engineering & Management (APEM journal) is an interdisciplinary international academic journal published quarterly. The main goal of the APEM journal is to present original, high quality, theoretical and application-oriented research developments in all areas of production engineering and production management to a broad audience of academics and practitioners. In order to bridge the gap between theory and practice, applications based on advanced theory and case studies are particularly welcome. For theoretical papers, their originality and research contributions are the main factors in the evaluation process. General approaches, formalisms, algorithms or techniques should be illustrated with significant applications that demonstrate their applicability to real-world problems. Please note the APEM journal is not intended especially for studying problems in the finance, economics, business, and bank sectors even though the methodology in the paper is quality/project management oriented. Therefore, the papers should include a substantial level of engineering issues in the field of manufacturing engineering.