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

Robotics, how to become robotics engneer

how to become robotics engneer

Mvar structural time series model, I need the code for a multivariate struc...

I need the code for a multivariate structural time series model with multiple cyclical components - any language is good.

Fire fighting operations - high rise buildings, Fire fighting operations - ...

Fire fighting operations - high rise buildings: Inlets that allow the fire service to supplement to water to the sprinklers and to the fire mains are useful additions to the m

Nash equilibrium, how to get ns2 coding for nash equilibrium

how to get ns2 coding for nash equilibrium

Hybrid ic, HYBRID IC: Hybrid IC's are formed by utilizing various combi...

HYBRID IC: Hybrid IC's are formed by utilizing various combinations of monolithic, thin-film and thick film techniques and may in certain circumstances contain discrete semicon

Turbine cooling - aircraft engine, Turbine cooling  Airflow: Figure ill...

Turbine cooling  Airflow: Figure illustrates the turbine cooling airflow of a typical gas turbine engine. The outward flow of cooling air is controlled by air seals of multi-g

Torque indication - aircraft engine, Torque indication: Turboprop and t...

Torque indication: Turboprop and turboshaft engines do not provide significant thrust through their jet pipes, so EPR would not be of any use in determining the thrust being pr

Re-heat system in aircraft engine, RE-HEAT (AFTER BURNING) Re-heat is a...

RE-HEAT (AFTER BURNING) Re-heat is a system fitted to a gas turbine engine as a means of increasing the total thrust. As much as twice the thrust can be obtained using reheat.

Polymers, what are the merits and demerits of free radical

what are the merits and demerits of free radical

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