Investigation on material removal rate and surface roughness in electrical discharge turning process of Al 7075-based metal matrix composites

2016 ◽  
Vol 30 (3/4) ◽  
pp. 216
Author(s):  
S. Gowri ◽  
M. Kanthababu ◽  
J. John Rozario Jegaraj
Keyword(s):  
Surface Roughness ◽  
Metal Matrix Composites ◽  
Material Removal Rate ◽  
Metal Matrix ◽  
Electrical Discharge ◽  
Material Removal ◽  
Removal Rate ◽  
Matrix Composites ◽  
Turning Process ◽  
Al 7075

scholarly journals Pengaruh Variasi Tekanan Kompaksi Powder Metallurgy Elektroda Metal Matrix Composites Tembaga - Grafit Terhadap Material Removal Rate Dan Electrode Relative Wear Pada Proses EDM Mesin Chimer EZ

2020 ◽  
Vol 3 (1) ◽  
pp. 46-54
Author(s):  
Dwi Handoko
Keyword(s):  
Powder Metallurgy ◽  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Matrix Composite ◽  
Material Removal Rate ◽  
Metal Matrix ◽  
Material Removal ◽  
Removal Rate ◽  
Matrix Composites ◽  
Relative Wear

Pada penelitian ini dilakukan pembuatan metal matrix composite dari bahan serbuk tembaga murni yang akan dipadu dengan bahan penguat berupa serbuk grafit yang dilanjutkan dengan pengujian pada mesin EDM. Metode pencampuran kedua material ini dilakukan dengan proses Powder metalurgi melalui tahapan pencampuran (mixing), penekanan (compaction) dan dilanjutkan dengan proses pemanasan dengan suhu 800 oC(sintering). Pada penelitian ini ingin diketahui pengaruh tekanan akibat proses powder metalurgi terhadap laju keausan material (MRR) dan laju keausan elektroda (ERR) pada material baja ST.37 mesin EDM Chimer EZ Dengan parameter pemakan tetap, arus 2 Amper dan kedalaman 5 mm. Pengujian yang dilakukan yaitu kekerasan dan struktur mikro. Dari hasil penelitian ini menunjukkan dengan semakin meningkatnya tekanan kompaksi laju keausan material MRR dan kekerasan semakin meningkat, sementara laju keausan terendahi terjadi pada tekanan kompaksi 25.000 KN

A Study of the Material Removal Rate of Electrical Discharge Machining of Particle Reinforced Metal Matrix Composites with Concavo-Convex Electrode

2011 ◽  
Vol 480-481 ◽  
pp. 294-299
Author(s):  
Jiang Wen Liu ◽  
T.M. Yue ◽  
Zhong Ning Guo ◽  
Z. Y. Wan ◽  
G.Y. Liu
Keyword(s):  
Material Removal Rate ◽  
Metal Matrix ◽  
Electrical Discharge ◽  
Material Removal ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Processing Condition ◽  
Matrix Composites ◽  
Particulate Reinforced ◽  
Stable Processing

A new concavo-convex electrode has been designed and fabricated. And an analysis of the electrical discharge machining (EDM) of a particulate reinforced metal matrix composite this new electrode was conducted in this study. The material removal rate (MRR) of new electrode and normal electrode are compared in different applied voltage and duty cycle conditions. It was found that EDM with this new electrode can accelerate the debris discharge during machining so that it has a higher MRR compared to the case where a normal electrode was employed. Moreover, by studying the waveforms, it could confirm that a stable processing condition can be obtained by employing the new electrode. The experiment results reveal that it is a feasible and effective way to machine MMCs by employing this new electrode.

Experimental Analysis and Forecasting of Material Removal Rate and Cutting Force in End Milling on A356 Alloy-SiC Metal Matrix Composites

2015 ◽  
Vol 787 ◽  
pp. 637-642
Author(s):  
K. Jayakumar ◽  
Jose Mathew ◽  
M.A. Joseph
Keyword(s):  
Cutting Force ◽  
Metal Matrix Composites ◽  
Material Removal Rate ◽  
Cutting Forces ◽  
Metal Matrix ◽  
Material Removal ◽  
End Milling ◽  
Removal Rate ◽  
A356 Alloy ◽  
Matrix Composites

By considering several applications of aluminum based particle reinforced composites especially in automobile, aerospace and electronic industries, in this work, prediction of machinability responses of A356 alloy-SiC particles (5, 10, 15 and 20 vol%) reinforced metal matrix composites is described. Composites were synthesized by vacuum hot pressing (VHP) assisted powder metallurgy (P/M) process. Effect of cutting speed (Vc), feed (f), depth of cut (d) and quantity of SiC (vol %) on machinability of composites in terms of material removal rate (MRR) and resultant cutting forces (FR) during end milling were investigated. Milling experiments were carried in dry condition based on central composite design and KISTLER dynamometer was used to measure cutting forces. Resultant cutting force values were increased from 21 to 105 N with an increase in ‘f’ and ‘d’, but decreased with increase in ‘Vc’. Increase in machining parameters increased the MRR from 2.3 to 8.6 × 103 mm3/min and increase in SiC reduced the MRR. Statistical modeling with cubic response equations were used to predict the results and predicted results were closely matching with experimental values.

An Orthogonal Experimental Analysis of Electrical Discharge Machining of Particle Reinforced Metal Matrix Composites with Concavo-Convex Electrode

2011 ◽  
Vol 314-316 ◽  
pp. 890-893
Author(s):  
Jiang Wen Liu ◽  
Guang Xue Chen ◽  
Tai Man Yue ◽  
Zhong Ning Guo ◽  
Zi Yao Wan
Keyword(s):  
Material Removal Rate ◽  
Duty Cycle ◽  
Experimental Analysis ◽  
Metal Matrix ◽  
Electrical Discharge ◽  
Material Removal ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Matrix Composites ◽  
Particulate Reinforced

A new concavo-convex electrode has been designed and employed and it was reported that electrical discharge machining (EDM) of particulate reinforced metal matrix composites with this kind of new electrode can accelerate the debris discharge during machining so that it has a higher material removal rate (MRR) compared to the case where a normal electrode was employed. Since there are many factors that can affect the MRR in the EDM process with the concavo-convex electrode, in order to determine which is the most important factor and to optimize the machining parameters, the relative importance of the various cutting parameters on material removal rate was established using an orthogonal experimental analysis in this study. The results of the analysis suggest that to achieve a high MRR for particulate reinforced aluminum 6061 with 10-vol% Al2O3 (10ALO) or 20vol% Al2O3 (20ALO) using a concavo-convex electrode, the duty cycle is the most influential factor among current, pulse duration and duty cycle.

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