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

Maximum speed-procraft, Maximum speed -Pro craft The standard approach f...

Maximum speed -Pro craft The standard approach for prop-driven aircraft is to assume that engine and propeller together produce a power (as opposed to thrust) output that is ind

Electrochemistry, can two metals such as iron and nickel be separated compl...

can two metals such as iron and nickel be separated completely by electrogravimetry?

Payback period method, Non-discounted cash flow method, Payback period met...

Non-discounted cash flow method, Payback period method In this method, time value of money is not considered. It takes into account the number of years required to recover the in

Dsp, find IDFT of the sequence X(k)={5,0,1,-j,0,1,0,1,j,0}

find IDFT of the sequence X(k)={5,0,1,-j,0,1,0,1,j,0}

#tmjjlitle.., Industries that manufacture racing cars prefers nickel based ...

Industries that manufacture racing cars prefers nickel based alloys for engine components and iron based alloys for structural parts. Justify this statement.

Corporate Restructuring, Corporate Restructuring Corporate restructuring r...

Corporate Restructuring Corporate restructuring refers to the changes in ownership, business max, assets mix and alliances with a view to enhance the shareholder value. Hence, cor

Research paper, You will research an issue relating to money and banking. Y...

You will research an issue relating to money and banking. You will write an eight- to 10-page paper discussing your research, in depth. You will also need to relate your research t

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