The electron beam machining Process also comes under one of those Non-traditional machining methods where highly dedicated accuracy is maintained. It is also called EBM.
In the last article, we had discussed Ultrasonic Machining, Electrical Discharge Machining, Electrochemical Machining, etc. whereas, in today's article, we will discuss EBM along with Definition, Parts, Working Principle, Process Parameters, Characteristics, Applications, Advantages, and Disadvantages in a detailed way.
So, lets start with the definition of Electron Beam Machining.
Electron beam Machining is a process in which a high velocity of electrons are concentrated through a narrow beam and is then directed towards the workpiece such that the material removal takes place by melting and vaporizing from the surface of the workpiece.
The parts of Electron Beam Machining are as follows.
The major part of the electron beam machining process is the Electron gun which acts as a cathode and contains tungsten or tantalum filament that generates the beam of electrons to remove the material from the surface of a workpiece.
It is used such that there is no possibility of air in the setup.
The electrons which were generated by the electron gun was been controlled by the grid cup.
To accelerate the electrons to a much high velocity, anode is used in the experimental setup.
Their main aim is to allow the beam of convergent electrons to pass through it and they are used to focus the beam of light on a particular spot.
Deflector coil guides the high-velocity electron beam onto the desired location of the workpiece maintaining efficiency for the formation of holes.
The workpiece is the region where we need to focus the beam of light to pass which removes the material from the surface of the workpiece. The table is used to hold the workpiece properly.
These are the parts of EBM. Lets discuss the working principle of it...
The working principle of Electron Beam machining is as follows.
When a very high voltage power supply is given to the electron gun, it is producing very high-velocity electrons in all the directions.
By using a magnetic lens or the deflector, all these high-velocity electrons are collected and formed like a beam of electrons having the cross-section area less than 0.05-millimeter square.
When this high-velocity electron beam is impinging onto the workpiece, the kinetic energy of electrons is converted into heat energy.
Therefore heat is getting generated at the workpiece and by using this heat, the workpiece is getting melting and evaporating i.e. the mechanism is melting and evaporation.
To avoid the Dispersion of electrons after the magnetic lens, the total setup is kept in a container which is maintained with a perfect vacuum.
There is no tool used and only an electron gun is used which is made by using a Germanium crystal type of material.
Medium: Perfect Vaccum
Wear Ratio: infinity.
This is the explanation behind the working of the Electron Beam Machining process.
The process parameters of EBM are as follows.
The machining characteristics which are directly effected by the process parameters in EBM are:
The applications of Electron Beam Machining Process are as follows.
The advantages of Electron Beam Machining Process are as follows.
The disadvantages of Electron Beam Machining Process are as follows.
This is the complete explanation about the Electron Beam Machining process in a detailed manner. If you have any doubts, feel free to ask from the comments section.