Advanced Machining Processes: Electrical-Discharge Machining (EDM)

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What is the function of the electrode in Electrical-Discharge Machining (EDM)?

To control the speed of the spark discharges
To provide cooling to the workpiece during the machining process
To apply pressure on the workpiece for better surface finish
To direct high-frequency electrical spark discharges to disintegrate electrically conductive materials (correct)

What is the purpose of the dielectric fluid in Electrical-Discharge Machining (EDM)?

To reduce the temperature of the workpiece
To improve the electrical conductivity of the workpiece
To separate the tool (cathode) and workpiece (anode) during the machining process (correct)
To lubricate the electrode for smooth movement

How does adjusting the gap clearance between the tool and workpiece affect the EDM process?

It allows spark discharge and can be adjusted to match machining conditions such as material removal rate (MRR) (correct)
It decreases the speed of the spark discharges
It helps in reducing the wear of the electrode
It increases the temperature of the workpiece

What will happen to the material removal rate (MRR) in Electrical-Discharge Machining if there is an increase in the melting point and latent heat of the material being machined?

The MRR will decrease (B) Signup and view all the answers

What is the primary factor affecting material removal rate (MRR) in Electrical-Discharge Machining (EDM)?

Current intensity and time (B) Signup and view all the answers

What is the main function of the dielectric fluid in Electrical-Discharge Machining (EDM)?

To act as a coolant and insulator during the machining process (C) Signup and view all the answers

What are the common tool materials used in Electrical-Discharge Machining (EDM)?

Copper, brass, and graphite (D) Signup and view all the answers

Which type of materials can Electrical-Discharge Machining (EDM) be applied to?

All electrically conducting metals & alloys (D) Signup and view all the answers

What is a disadvantage of Electrical-Discharge Machining (EDM) in terms of material removal rate (MRR)?

MRR is very low (D) Signup and view all the answers

What is the primary source of energy used in Laser-Beam Machining (LBM)?

Laser (C) Signup and view all the answers

Which of the following is NOT a type of laser used in Laser-Beam Machining (LBM)?

Halogen lasers (D) Signup and view all the answers

What does LBM's peak energy densities of laser beams range from?

$5 to $200 kW/mm2 (C) Signup and view all the answers

In Laser-Beam Machining, what is the function of the laser beam?

To melt & evaporate portions of the workpiece in a controlled manner (C) Signup and view all the answers

What environment can the laser operate in during Laser-Beam Machining (LBM)?

"Not necessarily" any transparent environment including air, inert gas, vacuum, and even certain liquids (C) Signup and view all the answers

What is the primary function of the electrode in Electrical-Discharge Machining (EDM)?

To direct high-frequency electrical spark discharges to disintegrate electrically conductive materials (A) Signup and view all the answers

How does an increase in the melting point and latent heat of the material being machined affect the material removal rate (MRR) in Electrical-Discharge Machining (EDM)?

It decreases the MRR (A) Signup and view all the answers

What is the purpose of the dielectric fluid in Electrical-Discharge Machining (EDM)?

To separate the tool (cathode) and workpiece (anode) during the machining process (C) Signup and view all the answers

What are the components of Electrical-Discharge Machining (EDM) used to direct high-frequency electrical spark discharges to disintegrate electrically conductive materials?

Dielectric fluid and electrodes (A) Signup and view all the answers

What is the main function of the dielectric fluid in Electrical-Discharge Machining (EDM)?

To separate the tool (cathode) and workpiece (anode) during the machining process (A) Signup and view all the answers

What is the effect of an increase in the melting point & latent heat of material on the material removal rate (MRR) in Electrical-Discharge Machining (EDM)?

It decreases MRR (C) Signup and view all the answers

What are the important characteristics of Electrical-Discharge Machining (EDM)?

Tool materials, workpiece materials, process parameters, and material removal (C) Signup and view all the answers

What is a disadvantage of Electrical-Discharge Machining (EDM) related to power requirement?

Very high power requirement compared to conventional processes (A) Signup and view all the answers

What type of workpiece can be machined using Electrical-Discharge Machining (EDM) without distortion?

Fragile and slender workpieces (A) Signup and view all the answers

What is the primary source of energy used in Laser-Beam Machining (LBM)?

Optical energy from a laser (C) Signup and view all the answers

What is the function of the laser beam in Laser-Beam Machining (LBM)?

To melt and evaporate portions of the workpiece (B) Signup and view all the answers

What is a disadvantage of Electrical-Discharge Machining (EDM) related to sharp corners?

It cannot produce sharp corners (B) Signup and view all the answers

Which parameter affects the cutting depth in Laser-Beam Machining (LBM)?

Laser beam power input (B) Signup and view all the answers

What is a characteristic advantage of Laser-Beam Machining (LBM) related to operating environment?

It operates in any transparent environment including air, inert gas, vacuum, and certain liquids (B) Signup and view all the answers

What can be effectively used for welding of dissimilar metals in Laser-Beam Machining (LBM)?

Welding of dissimilar metals (A) Signup and view all the answers

What type of materials can Electrical-Discharge Machining (EDM) be applied to?

All electrically conducting metals and alloys (D) Signup and view all the answers

Advanced Machining Processes: Electrical-Discharge Machining (EDM)

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Questions and Answers

What is the function of the electrode in Electrical-Discharge Machining (EDM)?

What is the purpose of the dielectric fluid in Electrical-Discharge Machining (EDM)?

How does adjusting the gap clearance between the tool and workpiece affect the EDM process?

What will happen to the material removal rate (MRR) in Electrical-Discharge Machining if there is an increase in the melting point and latent heat of the material being machined?

What is the primary factor affecting material removal rate (MRR) in Electrical-Discharge Machining (EDM)?

What is the main function of the dielectric fluid in Electrical-Discharge Machining (EDM)?

What are the common tool materials used in Electrical-Discharge Machining (EDM)?

Which type of materials can Electrical-Discharge Machining (EDM) be applied to?

What is a disadvantage of Electrical-Discharge Machining (EDM) in terms of material removal rate (MRR)?

What is the primary source of energy used in Laser-Beam Machining (LBM)?

Which of the following is NOT a type of laser used in Laser-Beam Machining (LBM)?

What does LBM's peak energy densities of laser beams range from?

In Laser-Beam Machining, what is the function of the laser beam?

What environment can the laser operate in during Laser-Beam Machining (LBM)?

What is the primary function of the electrode in Electrical-Discharge Machining (EDM)?

How does an increase in the melting point and latent heat of the material being machined affect the material removal rate (MRR) in Electrical-Discharge Machining (EDM)?

What is the purpose of the dielectric fluid in Electrical-Discharge Machining (EDM)?

What are the components of Electrical-Discharge Machining (EDM) used to direct high-frequency electrical spark discharges to disintegrate electrically conductive materials?

What is the main function of the dielectric fluid in Electrical-Discharge Machining (EDM)?

What is the effect of an increase in the melting point & latent heat of material on the material removal rate (MRR) in Electrical-Discharge Machining (EDM)?

What are the important characteristics of Electrical-Discharge Machining (EDM)?

What is a disadvantage of Electrical-Discharge Machining (EDM) related to power requirement?

What type of workpiece can be machined using Electrical-Discharge Machining (EDM) without distortion?

What is the primary source of energy used in Laser-Beam Machining (LBM)?

What is the function of the laser beam in Laser-Beam Machining (LBM)?

What is a disadvantage of Electrical-Discharge Machining (EDM) related to sharp corners?

Which parameter affects the cutting depth in Laser-Beam Machining (LBM)?

What is a characteristic advantage of Laser-Beam Machining (LBM) related to operating environment?

What can be effectively used for welding of dissimilar metals in Laser-Beam Machining (LBM)?

What type of materials can Electrical-Discharge Machining (EDM) be applied to?

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