Which one of the following is most important parameter for EDM?
Which one of the following is most important parameter for EDM?
Explanation: In EDM, melting point is the most important factor in determining the tool wear.
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.
How is MRR calculated EDM?
Material removal rate was calculated using Eq. (1) for all the experimental conditions. (1) MRR = ( W 1 – W 2 ) × 1000 ρ × t where W1 and W2 are the weight of workpiece before and after machining respectively (grams), ρ is the density of workpiece in (gm/cc), t is the machining time in minutes.
What are the principle components of EDM process?
EDM system consists of four basic components tool electrode and work piece, pulsed power supply system, dielectric supply system and electrode feeding system which are shown in Fig.
Which of the following materials can be machined using electro discharge machining?
Which of the following material can be machined using electronic discharge machine? Explanation: Iron is a good conductor of electricity and hence can be machined using electronic discharge machine.
What is EDM cost?
EDM wire, at its current cost of approximately $6 a pound, is the single highest cost related to the use of WEDM technology. The faster a machine unspools wire, the more it costs to operate that machine.
What is pulse off time in EDM?
Pulse-off time or pulse interval: The time duration between consecutive sparks during which there is no current supply to the electrodes and deionization of dielectric takes place. The dielectric also flushes the machining debris from the IEG (machining gap) during this time.
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.
What are the limitation of EDM?
Disadvantages of EDM :
- Machining time is too long.
- Excessive tool wear.
- High specific power consumption.
- Profile machining of complex contours is not possible.
- Only able to machine conductive materials.
- The metal removal rate is slow.
- Reproduction of sharp corners is the limitation of the process.
Which the following is true for electrical discharge machining?
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.
Which of the following shape can be produced using electro discharge machining?
| Q. | Which of the following shapes can be produced using Electro discharge machining? |
|---|---|
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» c. all of the mentioned | |
| Explanation: electro discharge machining is used to machine complex shapes to a high degree of accuracy. |
What is electric discharge machining and how does it work?
Electric discharge machining, also known as spark erosion, electro-erosion, or spark machining, is a metal removal process that uses an interrupted electric spark discharge between the electrode tool cathode and the work anode to erode metals.
How to find the optimal parameters in the electric discharge machining?
Graphs and response table are used to find the optimal levels of the parameters in the Electric discharge machining. The result revealed that the current, voltage & pulse on time have a great influence on the MRR,TWR and surface roughness.
What is the difference between traditional cutting and electrical discharge machining?
Whereas the efficiency of traditional cutting processes is limited by the mechanical properties of the processed material and the complexity of the workpiece geometry, electrical discharge machining (EDM) being a thermal erosion process, is subject to no such constraints.
What are the process parameters of EDM machine while machining carbon–carbon composites?
Warrier Ashish et al. determined the optimal setting of the process parameters of EDM machine while machining carbon–carbon composites. The parameters considered are pulse current, gap voltage and pulse-on-time, whereas the responses are electrode wear rate and material removal rate.