scholarly journals A Study of the Materials Removal Mechanism of Grinding-Aided Electrochemical Discharge Machining of Metal Matrix Composites

2018 ◽  
Vol 27 (5) ◽  
pp. 096369351802700 ◽  
Author(s):  
Jiangwen Liu ◽  
Zhibiao Lin ◽  
Zhongning Guo ◽  
Shuzhen Jiang ◽  
Taiman Yue ◽  
...  
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Good Deal ◽  
Single Pulse ◽  
Matrix Composites ◽  
Removal Mechanism ◽  
Machined Surface ◽  
Result Show

In order to research the workpiece materials removal mechanism of Grinding-assisted Electro-chemical Discharge Machining(G-ECDM) of Metal Matrix Composites (MMCs), a good deal of single pulse experiments has been performed in this paper. The crater volume, convex edge, debris, machined surface of G-ECDM have been taken into considerationand it turns out to be that the grinding effect removes the convex edge of the Electro-chemical Discharge Machining (ECDM) crater during the machining of MMCs, the result show that the material removal rate (MRR) of G-ECDM is much higher than that of ECDM and Electrical Discharge Machining (EDM). When compared to the normal ECDM process, it is found that though the Al4C3 phase can be detected in this ECDM condition, no Al4C3 are observed in the processed surface, which indicates a better surface quality. The reason of this phenomenonhas been analyzed theoretically and experimentally. Based on these results, mechanism of the G-ECDM of MMCs was disclosed in this study.

Single Pulse Study of Electrochemical Discharge Machining of Metal Matrix Composites

2012 ◽  
Vol 200 ◽  
pp. 536-539 ◽  
Author(s):  
Jiang Wen Liu ◽  
Guang Xue Chen ◽  
Tai Man Yue ◽  
Zhong Ning Guo
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Electrical Discharge Machining ◽  
Single Pulse ◽  
Matrix Composites ◽  
Electrochemical Discharge Machining ◽  
Electrochemical Discharge ◽  
Crater Volume ◽  
Particulate Reinforced ◽  
Volume Difference

Single pulse experiments were conducted to study electrochemical discharge machining (ECDM) of particulate reinforced metal matrix composites (MMCs) which are widely used in the packaging industry. This article reports the first phase of this study with an emphasis on the effects of pulse current on crater volume. The results showed that all the ECDM craters have a circular shape surrounded by a rim of re-solidified material. This indicates that ECDM craters were created by arc effect. The craters produced by both electrical discharge machining (EDM) and ECDM increased in volume with increasing peak current. However, within the range of currents studied, the craters formed by ECDM were always smaller than those produced by EDM alone under the same current. Moreover, the crater volume difference between EDM and ECDM did not change considerably with increasing current. This is considered to be due to an increase in ECDM current mainly enhances the arc energy and has little effect on the ECM action. Furthermore, the experiment results showed that the efficiency of the arc action in ECDM is reduced when the percent of reinforcement phase is increased.

An Investigation Into Non-Conventional Machining of Metal Matrix Composites

2019 ◽  
pp. 175-187
Author(s):  
Divya Zindani ◽  
Kaushik Kumar
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Material Removal ◽  
Removal Rate ◽  
Matrix Composites ◽  
Abrasive Water Jet ◽  
Machined Surface ◽  
Mechanical Erosion ◽  
Conventional Machining ◽  
Very High

One of the recently developing fields is that of non-traditional machining of particle reinforced metal matrix composites. The complexity associated with traditional machining of particle reinforced metal matrix composite is very high, and therefore, the researchers have begun to show more focus towards non-traditional machining. In the present work, the investigation has been carried out for non-traditional machining such as laser beam machining, electro-chemical machining, abrasive water jet machining, and electro-chemical discharge. Material removal rate, surface finish, and the mechanism of machining has been studied for each of the aforementioned processes. The main material removal mechanisms as has been identified are melting, mechanical erosion, vaporization, and chemical dissolution. The investigation reveals that the major reasons for the damage of the machined surface are the presence of reinforcement particles and thermal degradation.

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

2011 ◽  
Vol 480-481 ◽  
pp. 300-305
Author(s):  
Jiang Wen Liu ◽  
T.M. Yue ◽  
Zhong Ning Guo ◽  
Z. Y. Wan ◽  
G.Y. Liu
Keyword(s):  
Metal Matrix ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Processing Condition ◽  
Matrix Composites ◽  
Wire Electrode ◽  
Machined Surface ◽  
Particulate Reinforced ◽  
Stable Processing ◽  
Processing Mechanism

A new concavo-convex electrode has been designed and employed. And an analysis of the electrical discharge machining (EDM) mechanism of a particulate reinforced metal matrix composite with this new electrode was conducted in this study. 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 surface craters, it could confirm that discharge craters tend to connect together for the normal electrode. This indicates an abnormal arcing condition. Thus, the wire electrode was easy to be broken. While for the new electrode, separated craters were observed on the machined surface. This means a stable processing condition. The experiment results reveal the processing mechanism of EDM electrical discharge machining of MMCs by employing this new electrode.

scholarly journals Tool wear and surface quality of metal matrix composites due to machining: A review

2016 ◽  
Vol 231 (5) ◽  
pp. 739-752 ◽  
Author(s):  
Ferial Hakami ◽  
Alokesh Pramanik ◽  
Animesh K Basak
Keyword(s):  
Tool Wear ◽  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Surface Quality ◽  
Tool Life ◽  
Metal Matrix ◽  
Cutting Tool ◽  
Matrix Composites ◽  
Machined Surface

Higher tool wear and inferior surface quality of the specimens during machining restrict metal matrix composites’ application in many areas in spite of their excellent properties. The researches in this field are not well organized, and knowledge is not properly linked to give a complete overview. Thus, it is hard to implement it in practical fields. To address this issue, this article reviews tool wear and surface generation and latest developments in machining of metal matrix composites. This will provide an insight and scientific overview in this field which will facilitate the implementation of the obtained knowledge in the practical fields. It was noted that the hard reinforcements initially start abrasive wear on the cutting tool. The abrasion exposes new cutting tool surface, which initiates adhesion of matrix material to the cutting tool and thus causes adhesion wear. Built-up edges also generate at lower cutting speeds. Although different types of coating improve tool life, only diamond cutting tools show considerably longer tool life. The application of the coolants improves tool life reasonably at higher cutting speed. Pits, voids, microcracks and fractured reinforcements are common in the machined metal matrix composite surface. These are due to ploughing, indentation and dislodgement of particles from the matrix due to tool–particle interactions. Furthermore, compressive residual stress is caused by the particles’ indentation in the machined surface. At high feeds, the feed rate controls the surface roughness of the metal matrix composite; although at low feeds, it was controlled by the particle fracture or pull out. The coarser reinforced particles and lower volume fraction enhance microhardness variations beneath the machined surface.

scholarly journals Process parameter optimization of Al/SiC metal matrix composites during ultrasonic machining process

2021 ◽  
Vol 309 ◽  
pp. 01156
Author(s):  
Bikash Banerjee ◽  
Arindam Chakraborty ◽  
Somnath Das ◽  
Debabrata Dhupal
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Removal Rate ◽  
Optimization Technique ◽  
Research Work ◽  
Machining Process ◽  
Matrix Composites ◽  
Ultrasonic Machining ◽  
Response Parameter ◽  
Through Hole

Metal matrix is highly acceptable composites providing good strength for industrial use. In many field of industries, especially aerospace industry metal matrix composites of type Al/SiC is used because of its superior properties. In this research work, experimentalanalysis has been done for producing through hole on metal matrix composites with suitable quality ultrasonic machining (USM) process. Three unconstrained process parameters are chosen, like abrasive slurry concentration, power rating sand tool feed rate. Material removal rate (MRR) is considered as response parameter. The effects of each parameter have been analyzed here. Analysis of variance (ANOVA) has also been applied to identify the most significant factor. Response surface methodology (RSM) has been utilized to developed empirical model for determine the performance of ultrasonic process. Optimization technique has been used to find out the maximum process MRR. Confirmation verification test has been done to improve optimal parametric condition for getting maximum MRR. This research paper gives viability application of USM process for producing of through hole on metal matrix composites and various applications in industry.

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