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

Market value, Calculate the market value of a firm with total assests of $1...

Calculate the market value of a firm with total assests of $105 million and $50 million of 10% perpetual debt in the capital structure. The firm''s cost of equity is 14% on the $55

Basic electronics, Q 1.what is the difference between BJT and FET.What is B...

Q 1.what is the difference between BJT and FET.What is Biasing?Discuss abt diffrent Biasing techniques?Write the advantages and Volatage divider biasing over other biasing?what is

Iron crabon, iron crabon diagram with reactions

iron crabon diagram with reactions

Carrer, i want to do aeronautics engg. but my height is only five feet . so...

i want to do aeronautics engg. but my height is only five feet . so can i go in aeronautics

Capital budgeting decisions, Capital Budgeting Decisions The most important...

Capital Budgeting Decisions The most important function of a finance manager is the efficient allocation of its capital. The investment decision of a firm is termed as capital budg

Water, Dear Sir, Please answer the follwing question . Specs: Filterati...

Dear Sir, Please answer the follwing question . Specs: Filteration Capacity 18000 LPH , Tested pressure 6Kg/Sq.cm, Vertical MS pressure Sand filter(flat ends 6mm thick & di

The ideal operational amplifier, THE IDEAL OPERATIONAL AMPLIFIER Althou...

THE IDEAL OPERATIONAL AMPLIFIER Although the characteristics of an ideal operational amplifier are unattainable, modern integrated circuit types can provide an extremely close

Calculate the density at maximum flow, (a)  A section of road has a free fl...

(a)  A section of road has a free flow speed of 55km/h and a jam density of 367 vehicles per kilometre. Assuming under a linear speed-density relationship, calculate the density at

Vertical spread, what are the no-arbitrage lower bound of the vertical spre...

what are the no-arbitrage lower bound of the vertical spread

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