Electro-discharge machining performance of TiCN-based cermets

2007 ◽  
Vol 25 (4) ◽  
pp. 293-299 ◽  
Author(s):  
B.V. Manoj Kumar ◽  
J. Ramkumar ◽  
Bikramjit Basu ◽  
S. Kang
Keyword(s):  
Machining Performance ◽  
Electro Discharge Machining

scholarly journals Study on Generating Machining Performance of Two-Dimensional Ultrasonic Vibration-Composited Electrolysis/Electro-Discharge Technology for MMCs

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 617
Author(s):  
Jing Li ◽  
Wanwan Chen ◽  
Yongwei Zhu
Keyword(s):  
Ultrasonic Vibration ◽  
Orthogonal Experiment ◽  
Spindle Speed ◽  
Machining Efficiency ◽  
Matrix Composites ◽  
Two Dimensional ◽  
Machining Performance ◽  
Factors Affecting ◽  
Electro Discharge Machining ◽  
Workpiece Vibration

Ultrasonic vibration-composited electrolysis/electro-discharge machining technology (UE/DM) is effective for machining particulate-reinforced metal matrix composites (MMCs). However, the vibration of the tool or workpiece suitable for holes limits the application of UE/DM. To improve the generating machining efficiency and quality of flat and curved surfaces, in this study, we implemented two-dimensional ultrasonic vibration into UE/DM and constructed a novel method named two-dimensional ultrasonic vibration-composited electrolysis/electro-discharge machining (2UE/DM). The influence of vibration on the performance of 2UE/DM compared to other process technologies was studied, and an orthogonal experiment was designed to optimize the parameters. The results indicated that the materiel remove rate (MRR) mainly increased via voltage and tool vibration. The change current was responsible for the MRR in the process. Spindle speed and workpiece vibration were not dominant factors affecting the MRR; the spindle speed and tool and workpiece vibration, which reduced the height difference between a ridge and crater caused by abrasive grinding, were responsible for surface roughness (Ra) and form precision (δ). Additionally, the optimized parameters of 1000 rpm, 3 V, and 5 um were conducted on MMCs of 40 SiCp/Al and achieved the maximum MRR and minimum Ra and δ of 0.76 mm3/min, 3.35 um, and 5.84%, respectively. This study’s findings provide valuable process parameters for improving machining efficiency and quality for MMCs of 2UE/DM.

Wire Electro Discharge Machining of Al/SiC Metal Matrix Composite

2011 ◽  
Vol 121-126 ◽  
pp. 564-567
Author(s):  
Bao Ji Ma ◽  
Yu Quan Zhu ◽  
Xiao Li Jin
Keyword(s):  
Surface Roughness ◽  
Current Pulse ◽  
Pulse Duration ◽  
Cutting Speed ◽  
Machining Performance ◽  
Peak Current ◽  
Positive Effects ◽  
Electro Discharge Machining ◽  
Input Variables ◽  
Pulse On Time

The machining characteristics of SiC/Al composite using wire electro discharge machining (WEDM) were investigated in this study. Material cutting speed and surface roughness value were adopted to evaluate the machinability. Peak current, pulse on time, pulse duration and working voltage were selected as the input variables to investigate the machining performance. Effects of input variables on the cutting speed and surface roughness were experimentally tested. Peak current, pulse on time and working voltage were confirmed to have positive effects on cutting speed and surface roughness value. Whereas the cutting speed and surface roughness value decrease with the increase of pulse duration.

Study on Preparation and Machining Performance of SiC/Cu Composites

2012 ◽  
Vol 174-177 ◽  
pp. 425-428
Author(s):  
Nian Suo Xie ◽  
Jin Wang
Keyword(s):  
Surface Roughness ◽  
High Speed ◽  
High Speed Steel ◽  
Cemented Carbide ◽  
Pulse Interval ◽  
Machining Performance ◽  
Electro Discharge Machine ◽  
Electro Discharge Machining ◽  
Cutting Surface ◽  
Discharge Machine

SiC/Cu composite materials were fabricated by powder metallurgy, and microstructure of composite was analyzed by means of metallographic microscope. The high speed steel tool and cemented carbide tool are used as cutters, and machining performance of SiC/Cu Composites were studied by cutting lathe and wire-electro discharge machine. The relationship between wire-electro discharge machining cutting speed and pulse interval were studied by wire-electro discharge machine. The results show that the composite cutting surface roughness increases with increasing of the content of SiC particles when the size of SiC is 40μm, while composite cutting surface roughness decreases with increasing of the content of SiC particles when the size of SiC is 20μm, the cemented carbide tolls have longer life than high-speed steel tools. The surface roughness of composite increases with the increasing of source voltage, but it decreases with increasing of pulse interval in the wire-electro discharge machining cutting conditions.

Modeling and Optimization of Micro Electro Discharge Machining Process: A Review

2012 ◽  
Vol 622-623 ◽  
pp. 590-594 ◽  
Author(s):  
P. Sivaprakasam ◽  
P. Hariharen ◽  
S. Kathikheyen ◽  
S. Balusamy
Keyword(s):  
Process Parameters ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Optimization Techniques ◽  
Machining Process ◽  
Work Piece ◽  
Machining Performance ◽  
Micro Electrical Discharge Machining ◽  
Electro Discharge Machining ◽  
Short Period

Micro Electrical discharge machining (µEDM) is an electro thermal process, the cutting force is negligibly small and material removal occurs irrespective of hardness of work piece material .Micro electrical discharge machining process is capable of machining of complex shape, which is difficult to machine in conventional machining process. Last decade, the EDM process involved demand for machining requirements with short period. Since the major risk of wire breakage, deflections of electrodes were affecting the performance accuracy of EDM operation. This paper describe about a comprehensive review of micro electro discharge machining process and its process optimization techniques used for last 10 years. Micro electro discharge machining has more important given to difficult to machine materials. In order to improve the surface integrity and performance of process, need to select proper process parameters. It reports on the Micro EDM research involving the optimization of the process parameters surveying the influence of the various factors affecting the machining performance and productivity.

A Systematic Approach to the Adaptive Control of the Electro-Discharge Machining Process

1978 ◽  
Vol 100 (3) ◽  
pp. 303-309 ◽  
Author(s):  
M. M. Tseng
Keyword(s):  
Adaptive Control ◽  
Process Planning ◽  
Systematic Approach ◽  
Machining Process ◽  
Experimental Investigations ◽  
Machining Performance ◽  
Electric Pulses ◽  
Electro Discharge Machining ◽  
On Line ◽  
Line Process

Electro-discharge machining removes metal with very short lived electric pulses between electrode and workpiece which are immersed in dielectric liquid. With limited feedback available to the operator, the process is very difficult to approach and maintain efficient machining performance. A systematic approach is taken here by applying incomplete process information for off-line process planning and by minicomputer technology for on line adaptive control. Off-line process planning determines the optimal current level and pulse duration for the roughing and finishing. By sensing down feed and pulse efficiency, on line adaptive control adjusts servo voltage and off time. Experimental investigations with two repetitions show that the system can complete the job with a shorter machining time by detecting and responding more efficiently to disturbances in the process than manual control.

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