Effect of untreated and deep cryotreated tungsten carbide electrodes on PMEDM performance of AISI 304 stainless steel

IF 0.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Materials & Product Technology Pub Date : 2021-06-21 DOI:10.1504/ijmpt.2021.10038953

Munmun Bhaumik, K. Maity

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引用次数: 0

Abstract

Powder mixed electro discharge machining (PMEDM) is the expansion of conventional electro discharge machining (EDM) where powder particles are mixed in the dielectric fluid for acquiring better surface finish and enhancing machining efficiency. Cryotreatment of the electrode is introduced in this study which reduced the tool wear, thus machining cost. In this investigation, SiC powder particles were suspended in kerosene dielectric and the effect of control parameters, cryotreated double tempered (CT2) electrode have been studied on surface crack density (SCD), surface roughness (Ra), material removal rate (MRR) and tool wear rate (TWR). Powder concentration, duty cycle, pulse on time, peak current, and gap voltage were used as control parameters. EDM operation on AISI 304 stainless steel is performed using untreated (UT) and CT2 tungsten carbide (WC) electrodes. It was found that higher material removal rate and superior surface finish obtained in PMEDM over conventional EDM. CT2 electrode gives less TWR and lesser amount of surface cracks than that of UT electrode.

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未处理和深冷处理的碳化钨电极对AISI 304不锈钢PMEDM性能的影响

粉末混合电火花加工(PMEDM)是传统电火花加工(EDM)的扩展，将粉末颗粒混合在介质流体中以获得更好的表面光洁度，提高加工效率。本研究介绍了电极的冷冻处理，减少了刀具的磨损，从而降低了加工成本。本研究将SiC粉末颗粒悬浮在煤油介质中，研究了控制参数对低温双回火(CT2)电极表面裂纹密度(SCD)、表面粗糙度(Ra)、材料去除率(MRR)和刀具磨损率(TWR)的影响。以粉末浓度、占空比、脉冲接通时间、峰值电流和间隙电压为控制参数。使用未处理(UT)和CT2碳化钨(WC)电极对AISI 304不锈钢进行电火花加工。结果表明，与传统电火花加工相比，PMEDM具有更高的材料去除率和更好的表面光洁度。CT2电极比UT电极产生更小的TWR和更少的表面裂纹。

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

International Journal of Materials & Product Technology 工程技术-材料科学：综合

CiteScore

0.80

自引率

0.00%

发文量

审稿时长

8 months

期刊介绍： The IJMPT is a refereed and authoritative publication which provides a forum for the exchange of information and ideas between materials academics and engineers working in university research departments and research institutes, and manufacturing, marketing and process managers, designers, technologists and research and development engineers working in industry.