Electron beam welding, Other Engineering

Assignment Help:

The experimental set-up of Electron-beam welding.

In the electron-beam process, electrons are emitted from the heated filament called the cathode and then focused into a beam which is directed at the welding point. This electron beam is accelerated by a high difference of potential voltage between the work-piece and the cathode filament. The cathode within the electron-beam gun releases the electrons, which travel through a series of focusing lenses, causing the electrons to converge on one another to form the beam. The electrons are not free flowing but are instead greatly accelerated by the tremendous difference of potential voltage between the cathode and anode. The speed of these accelerated particles range from 30,000 to 1,20,000 miles/sec, depending upon the voltage of the unit.

          When the beam strikes the welding point, the kinetic energy of the high-speed electrons is converted into heat. The heat is great enough to melt and fuse the metal. The greater the kinetic energy, the greater the amount of heat released and by this energy the welding process is completed.

Ans.(b) The soldering is a method of joining similar or dissimilar metals by means of a filler metal (called solder) which melts at a relatively low temperature i.e. less than 427ºC. Although soldering is done below 427ºC generally the solde3rs used have a melting point between 180ºC to 270ºC.


Related Discussions:- Electron beam welding

Fire protection test, Go to https://blackboard.newhaven.edu/ user: user:...

Go to https://blackboard.newhaven.edu/ user: user:Aaldo6 Pass:1992May239645 Class: fire 2209 Occup safety$ hilt-fire take the test its one hour test multiple choices its due t

Circuit, in the circuit what is the voltage at point with respect to ground...

in the circuit what is the voltage at point with respect to ground

Uncertainty propagation, Uncertainty propagation In order to calculate ...

Uncertainty propagation In order to calculate the error of a quantity derived from a mathematical formula which has measured variables with errors, one should use the uncertain

Coupling and cohesion, advantages and disadvantages of coupling and cohesio...

advantages and disadvantages of coupling and cohesion

Principles of suveying, the true length of a line is known to be 500m.the ...

the true length of a line is known to be 500m.the line was again measured with a 20m tape and found to be 502m,what is the correct length of the 20m tape.

Hardness of water, why is only 1 lime and sod required for aluminium impuri...

why is only 1 lime and sod required for aluminium impurities

Edc, Combination clipper

Combination clipper

Diffusion, distingush between short range and long range diffusion

distingush between short range and long range diffusion

Financial leverage Multiplayer , How i can have the FLM if i dont have the ...

How i can have the FLM if i dont have the Total Assets or Shareholders Equity

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd