30 Questions
What is the function of the electrode in Electrical-Discharge Machining (EDM)?
To direct high-frequency electrical spark discharges to disintegrate electrically conductive materials
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
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)
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
What is the primary factor affecting material removal rate (MRR) in Electrical-Discharge Machining (EDM)?
Current intensity and time
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
What are the common tool materials used in Electrical-Discharge Machining (EDM)?
Copper, brass, and graphite
Which type of materials can Electrical-Discharge Machining (EDM) be applied to?
All electrically conducting metals & alloys
What is a disadvantage of Electrical-Discharge Machining (EDM) in terms of material removal rate (MRR)?
MRR is very low
What is the primary source of energy used in Laser-Beam Machining (LBM)?
Laser
Which of the following is NOT a type of laser used in Laser-Beam Machining (LBM)?
Halogen lasers
What does LBM's peak energy densities of laser beams range from?
$5 to $200 kW/mm2
In Laser-Beam Machining, what is the function of the laser beam?
To melt & evaporate portions of the workpiece in a controlled manner
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
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
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
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
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
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
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
What are the important characteristics of Electrical-Discharge Machining (EDM)?
Tool materials, workpiece materials, process parameters, and material removal
What is a disadvantage of Electrical-Discharge Machining (EDM) related to power requirement?
Very high power requirement compared to conventional processes
What type of workpiece can be machined using Electrical-Discharge Machining (EDM) without distortion?
Fragile and slender workpieces
What is the primary source of energy used in Laser-Beam Machining (LBM)?
Optical energy from a laser
What is the function of the laser beam in Laser-Beam Machining (LBM)?
To melt and evaporate portions of the workpiece
What is a disadvantage of Electrical-Discharge Machining (EDM) related to sharp corners?
It cannot produce sharp corners
Which parameter affects the cutting depth in Laser-Beam Machining (LBM)?
Laser beam power input
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
What can be effectively used for welding of dissimilar metals in Laser-Beam Machining (LBM)?
Welding of dissimilar metals
What type of materials can Electrical-Discharge Machining (EDM) be applied to?
All electrically conducting metals and alloys
Test your knowledge of electrical-discharge machining (EDM) and its components and functions. Learn about the electrode, dielectric fluid, and the process of disintegrating electrically conductive materials using high-frequency electrical spark discharges.
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