A Comparative Study of Die-Sinking and Near-Dry EDM Using MADM-Based Parameter Optimization

IF 1.3 4区工程技术 Q4 INSTRUMENTS & INSTRUMENTATION

MAPAN Pub Date : 2025-11-03 DOI:10.1007/s12647-025-00864-4

Ajit, Deepak Kumar Bhalla, Sanjay Sundriyal

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引用次数: 0

Abstract

Near-dry electric discharge machining (ND-EDM) has emerged as an advanced and sustainable technique for precision machining of hard and resilient materials. This study investigates the ND-EDM of EN-31 steel with the objective of optimizing key performance characteristics, including material removal rate (MRR), surface roughness (SR), residual stress (RS), and microhardness (MH). The influence of discharge current, pulse on/off time, gap voltage, and mist pressure was systematically examined using an L27 orthogonal array. Experimental results were analyzed through Taguchi-based Grey Relational Analysis (GRA) in combination with Analysis of Variance (ANOVA) to identify significant process factors. Furthermore, an objective weighting methodology incorporating standard deviation and multi-attribute decision-making (MADM) optimization was employed to establish the most favorable parameter combination. The results confirmed that the A1B1C1D1 setup yielded the most balanced machining performance, achieving higher productivity with improved surface integrity. The integration of MADM with ND-EDM provides a novel framework for sustainable machining optimization, demonstrating clear industrial advantages over conventional die-sinking EDM.

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基于madm的冲模与近干电火花加工参数优化比较研究

近干式电火花加工（ND-EDM）已成为一种先进和可持续的硬弹性材料精密加工技术。本研究对EN-31钢的ND-EDM进行了研究，目的是优化关键性能特征，包括材料去除率（MRR）、表面粗糙度（SR）、残余应力（RS）和显微硬度（MH）。采用L27正交阵列系统考察了放电电流、脉冲开/关时间、间隙电压和雾压的影响。采用基于田口的灰色关联分析（GRA）结合方差分析（ANOVA）对实验结果进行分析，找出显著的过程因素。在此基础上，采用标准偏差和多属性决策优化相结合的客观加权方法，确定了最优的参数组合。结果证实，A1B1C1D1设置产生了最平衡的加工性能，在提高表面完整性的同时实现了更高的生产率。MADM与ND-EDM的集成为可持续加工优化提供了一个新的框架，展示了比传统模切电火花加工明显的工业优势。

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来源期刊

MAPAN 工程技术-物理：应用

CiteScore

2.30

自引率

20.00%

发文量

审稿时长

3 months

期刊介绍： MAPAN-Journal Metrology Society of India is a quarterly publication. It is exclusively devoted to Metrology (Scientific, Industrial or Legal). It has been fulfilling an important need of Metrologists and particularly of quality practitioners by publishing exclusive articles on scientific, industrial and legal metrology. The journal publishes research communication or technical articles of current interest in measurement science; original work, tutorial or survey papers in any metrology related area; reviews and analytical studies in metrology; case studies on reliability, uncertainty in measurements; and reports and results of intercomparison and proficiency testing.