Influence of dielectric and machining parameters on the process performance for electric discharge milling of SiC ceramic

2011 ◽  
Vol 59 (1-4) ◽  
pp. 127-136 ◽  
Author(s):  
Renjie Ji ◽  
Yonghong Liu ◽  
Yanzhen Zhang ◽  
Baoping Cai ◽  
Jianmin Ma ◽  
...  
Keyword(s):  
Electric Discharge ◽  
Machining Parameters ◽  
Process Performance ◽  
Sic Ceramic ◽  
Electric Discharge Milling

Fabrication of Complex Micro Channels by Micro Electric Discharge Milling (µ-ED Milling)

2013 ◽  
Author(s):  
Vaibhav Shukla ◽  
Syed Nadeem Akhtar ◽  
S. Kanmani Subbu ◽  
J. Ramkumar
Keyword(s):  
Electric Discharge ◽  
Geometrical Parameters ◽  
Machining Parameters ◽  
Curved Channels ◽  
Micro Channels ◽  
Complex Shapes ◽  
Successful Approach ◽  
Full Factorial Experimental Design ◽  
Optimized Conditions ◽  
Electric Discharge Milling

Micro electric discharge milling (μ-ED milling) is an effective and economic process for the fabrication of micro channels. In the present work, the bulk approach of μ-ED milling is being attempted to make complex shaped micro channels. For a straight channel the bulk approach of μ-ED milling was found to be a successful approach. A tungsten tool of diameter 500 μm was used to fabricate semi-circular micro channels on EN-24 steel. Important machining parameters had earlier been optimized to make straight channels on EN-24 steel by the same method. The effect of geometrical parameters such as radius of curved channel and aspect ratio on MRR and TWR were studied by full factorial experimental design for single pass at optimized machining parameters. Finally complex shapes like T-type and serpentine channels were made by using optimized conditions of straight and curved channels by bulk approach with multiple passes of μ-ED milling.

Experimental research on machining characteristics of SiC ceramic with end electric discharge milling

2011 ◽  
Vol 25 (6) ◽  
pp. 1535-1542 ◽  
Author(s):  
Renjie Ji ◽  
Yonghong Liu ◽  
Yanzhen Zhang ◽  
Xin Dong ◽  
Zhili Chen ◽  
...  
Keyword(s):  
Experimental Research ◽  
Electric Discharge ◽  
Sic Ceramic ◽  
Electric Discharge Milling ◽  
Machining Characteristics

Temperature Analysis for Circumferential Electric Discharge Milling and Mechanical Grinding Compound Machining of SiC Ceramic

2013 ◽  
Vol 302 ◽  
pp. 236-240
Author(s):  
Ren Jie Ji ◽  
Yong Hong Liu ◽  
Chao Zheng ◽  
Yan Zhen Zhang ◽  
Fei Wang
Keyword(s):  
Temperature Distribution ◽  
Electric Discharge ◽  
Removal Rate ◽  
High Hardness ◽  
Distribution Model ◽  
Mechanical Grinding ◽  
Rough Machining ◽  
Machined Surface ◽  
Sic Ceramic ◽  
Electric Discharge Milling

Engineering ceramics have been widely employed in the aerospace, automotive and tool field. However, they are difficult to machine due to their high hardness and brittleness. Circumferential electric discharge milling and mechanical grinding compound machining method is employed in this paper. The temperature distribution model for the compound machining of SiC ceramic is established, and the temperature distribution is calculated at different machining conditions. The results show that with the compound machining method, the higher material removal rate can be obtained at rough machining condition, and the better machined surface quality can be obtained at finish machining condition.

Modeling of Material Removal Mechanism in Micro Electric Discharge Milling of Ti-6Al-4V

2014 ◽  
Vol 592-594 ◽  
pp. 516-520 ◽  
Author(s):  
Basil Kuriachen ◽  
Jose Mathew
Keyword(s):  
Material Removal Rate ◽  
Feed Rate ◽  
Material Removal ◽  
Removal Rate ◽  
Milling Process ◽  
Work Piece ◽  
Machining Parameters ◽  
Removal Mechanism ◽  
Material Removal Mechanism ◽  
Electric Discharge Milling

Micro EDM milling process is accruing a lot of importance in micro fabrication of difficult to machine materials. Any complex shape can be generated with the help of the controlled cylindrical tool in the pre determined path. Due to the complex material removal mechanism on the tool and the work piece, a detailed parametric study is required. In this study, the influence of various process parameters on material removal mechanism is investigated. Experiments were planned as per Response Surface Methodology (RSM) – Box Behnken design and performed under different cutting conditions of gap voltage, capacitance, electrode rotation speed and feed rate. Analysis of variance (ANOVA) was employed to identify the level of importance of machining parameters on the material removal rate. Maximum material removal rate was obtained at Voltage (115V), Capacitance (0.4μF), Electrode rotational Speed (1000rpm), and Feed rate (18mm/min). In addition, a mathematical model is created to predict the material removal

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