Effect of powder concentration on the EDM performance of AISI 304 using cryotreated post tempered electrodes

IF 0.7 Q3 ENGINEERING, MULTIDISCIPLINARY Engineering Review Pub Date : 2022-01-01 DOI:10.30765/er.1655

Munmun Bhaumik, K. Maity

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Abstract

Powder mixed electro discharge machining (PMEDM) is a hybrid machining process in which dielectric fluid is mixed with electrically conductive powder particles for enhancing surface quality and material removal rate. Cryogenic treatment was brought in this process to improve tool life and cutting tool properties. In this research, silicon carbide (SiC) powder mixed electro discharge machining (EDM) has been performed for AISI 304 machining. Experiments have been carried out to study the effect of powder concentrations (0 g/l, 4 g/l, 6 g/l, 8 g/l and 10 g/l) on the EDM performances viz. radial overcut (ROC), material removal rate (MRR), surface roughness (Ra) and tool wear rate (TWR) using three tungsten carbide electrodes (i.e. untreated, cryotreated single and double tempered). With addition of powder concentration material removal rate, radial overcut enhances and surface roughness and tool wear rate reduces. With the addition of powder concentration MRR, TWR, Ra and ROC decreased up to 10.60%, 37.08%, 15.95% and 9.31% for cryotreated single tempered electrode and decreased up to 16.64%, 42.10%, 26.58% and 12.19% for cryotreated double tempered electrode respectively. Microstructural analysis of machined surface has been carried out for the PMEDMed surfaces.

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粉末浓度对AISI 304低温后回火电极电火花加工性能的影响

粉末混合电火花加工(PMEDM)是一种将介电流体与导电粉末颗粒混合以提高表面质量和材料去除率的混合加工工艺。在该工艺中引入了低温处理，提高了刀具寿命和刀具性能。采用碳化硅粉混合电火花加工技术对AISI 304进行了加工。实验研究了粉末浓度(0 g/l、4 g/l、6 g/l、8 g/l和10 g/l)对三种碳化钨电极(即未处理、低温单回火和双回火)电火花加工性能(径向过切(ROC)、材料去除率(MRR)、表面粗糙度(Ra)和刀具磨损率(TWR))的影响。随着粉末浓度的增加，材料去除率提高，表面粗糙度和刀具磨损率降低。随着粉末浓度的增加，单回火电极的MRR、TWR、Ra和ROC分别降低了10.60%、37.08%、15.95%和9.31%，双回火电极的MRR、TWR、Ra和ROC分别降低了16.64%、42.10%、26.58%和12.19%。对PMEDMed加工表面进行了显微组织分析。

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来源期刊

Engineering Review ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.00

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0.00%

发文量

期刊介绍： Engineering Review is an international journal designed to foster the exchange of ideas and transfer of knowledge between scientists and engineers involved in various engineering sciences that deal with investigations related to design, materials, technology, maintenance and manufacturing processes. It is not limited to the specific details of science and engineering but is instead devoted to a very wide range of subfields in the engineering sciences. It provides an appropriate resort for publishing the papers covering prior applications – based on the research topics comprising the entire engineering spectrum. Topics of particular interest thus include: mechanical engineering, naval architecture and marine engineering, fundamental engineering sciences, electrical engineering, computer sciences and civil engineering. Manuscripts addressing other issues may also be considered if they relate to engineering oriented subjects. The contributions, which may be analytical, numerical or experimental, should be of significance to the progress of mentioned topics. Papers that are merely illustrations of established principles or procedures generally will not be accepted. Occasionally, the magazine is ready to publish high-quality-selected papers from the conference after being renovated, expanded and written in accordance with the rules of the magazine. The high standard of excellence for any of published papers will be ensured by peer-review procedure. The journal takes into consideration only original scientific papers.