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

Need help with a financial management quiz, Would you be able to assit me w...

Would you be able to assit me with a 40 question, multiple chioice quiz today ?

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

Which scheme provides the best spectrum capacity, Question: (a) What a...

Question: (a) What are the criteria that a frequency planner and a network engineer need to consider during cellular planning and design. (b) Assuming that you work as a c

Finite Element Analysis Assignment, Need help using FEA/FEM software (MSC M...

Need help using FEA/FEM software (MSC Marc/Mentat) to model and analyze a system,then write a lab report about it, it is due tomorrow... anything you can do for me?

Npn and pnp, different operating modes of npn transistor

different operating modes of npn transistor

representing vectors in different axes, Representing vectors in different ...

Representing vectors in different axes All positions, velocities, momentums and accelerations are really relative positions, relative velocities, relative momentums and relativ

Semiconductor, Explain electrons and holes in quantum walls.

Explain electrons and holes in quantum walls.

Dc load line for a diode , dc load line for a diode & same for circuit con...

dc load line for a diode & same for circuit consisting of supply voltage in series with resistance & diodes

Fire safety management for restaurants, Fire safety management for restaura...

Fire safety management for restaurants: Staff in restaurants must be aware that customers who have been served their food are always reluctant to leave that food and evacuate.

Slip and slip plane, Q. What is slip? What is slip plane? What are principa...

Q. What is slip? What is slip plane? What are principal if slip planes and slip direction for BCC, FCC and HCP crystal? Ans. X-ray diffraction studies show that the crystalli

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