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

Financial management, The role of financial managers in the changing econom...

The role of financial managers in the changing economic scenario

Aviation legislation - aircraft weight and balance, AIRCRAFT WEIGHT AND BAL...

AIRCRAFT WEIGHT AND BALANCE - Reference BCAR A5-4 or JAR-25.23 -29 After an aircraft has been constructed, painted and can be said to be ‘representative of its true empty (or

Laser beam welding, In laser beam welding coalescence is produced by the he...

In laser beam welding coalescence is produced by the heat obtained from the application of a concentrated coherent light beam impining upon the surface to be joined .   It con

Range - Aircraft performance, Safe Operating Range The SOR is the max ...

Safe Operating Range The SOR is the max distance between airfields which the aircraft can fly with full allowance for headwind, diversion, stacking. • Distance flown in climb

Compressibility fluid -aircraft maintenance, Compressibility Fluid: Com...

Compressibility Fluid: Compressible fluid flow refers to the air flow through a gas turbine engine and, because the air is compressible, flow at subsonic speeds causes a change

Applications of De, What are the applications of de.moivres theorem in soft...

What are the applications of de.moivres theorem in software engineering,computer science,programming and computer engineering? if there are any applications,then,what are that?

Basic principles - propeller, BASIC PRINCIPLES : The purpose of a prope...

BASIC PRINCIPLES : The purpose of a propeller is to convert the power developed by the engine into a useful force called 'Thrust'. This force must be equal to and opposite in

Biotechnology engineering project, I want a project which is related to bio...

I want a project which is related to biotech engineering.. Something like designing or inventing .

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