What are the process parameters affecting electric discharge machining?
What are the process parameters affecting electric discharge machining?
Important process parameters of EDM are current, voltage and pulse on time. In the present work current, voltage and pulse on time were varied to study the effect of variation in these parameters on material removal rate. MRR increases nonlinearly with the increases in voltage.
What are the process parameters in EDM process?
Therefore, in this research paper, PSO was adopted for the optimization of Ra and MRR for the EDM of EN31. Pulse Current (A), Gap Voltage (V), Pulse on time (µs), and Pulse off time (µs) are considered as the process parameters. Further, the multiple-objective optimization is performed for the Ra and MRR through PSO.
What are the characteristics of electro discharge machining?
Electro- Discharge Machining (EDM) is a material removal process based on a spark erosion mechanism generated between the electrode and the workpiece. Obviously, the workpiece material should at least possess a certain degree of conductivity such that a spark can be initiated.
What is electrical discharge machining process?
Electrical discharge machining (EDM) is a non-traditional machining process based on removing material from a part by means of a series of repeated electrical discharges between tools, called electrodes, and the part being machined in the presence of a dielectric fluid. From: Machining and machine-tools, 2013.
Why dielectric medium is used in EDM?
Dielectric is an important parameter in EDM and plays a crucial role in determining high material removal rate (MRR) and surface finish during operation. The dielectric fluid behave as a medium which controls the electrical discharge and absorb heat during process.
Which the following is true for electrical discharge machining EDM?
Which the following is true for Electrical Discharge machining (EDM)? Any electrical conductor can be machined by this method. Some light oil like transformer oil or kerosene oil is used as dielectric.
Why dielectric is used in EDM?
What is gap voltage in EDM?
The voltage between the gap of the electrode and workpiece is known as gap voltage. The applied voltage determines the total energy of the spark. Higher voltage settings increase the gap, which improves the flushing conditions and helps to stabilize the machining and increase MRR.
What are the applications of electro discharge machining?
Applications of Electrical Discharge Machining Several processes are possible using electrical discharge machining. These processes include milling, turning, small hole drilling, and more. This unique process is also valuable for a wide range of industries ranging from automotive to the aerospace industry.
Which dielectric medium is used in EDM?
In EDM, a potential difference is applied between the tool and workpiece. Both the tool and the work material are to be conductors of electricity. The tool and the work material are immersed in a dielectric medium. Generally kerosene or deionised water is used as the dielectric medium.
What is the function of dielectric fluid?
Dielectric liquids are used as electrical insulators in high voltage applications, e.g. transformers, capacitors, high voltage cables, and switchgear (namely high voltage switchgear). Its function is to provide electrical insulation, suppress corona and arcing, and to serve as a coolant.