Electron beam welding(ebw)-basic principle, Mechanical Engineering

Assignment Help:

BASIC PRINCIPLE OF ELECTRON BEAM WELDING(EBW)

 

Electron beam welding which utilises a heat source of electrons which are accelerated by an electric field to mextremely high speeds and focused to ma sharp beam by electrostatic or electromagnetic fields , which is used for welding a wide range of metals in thickness ranging from foils to extremely thick sections.

Electrons are produced at the cathode surface by thermonic emission. The most common emitter material used is tungsten, which contains a small percentage of rhenium. They are being accelerated by high voltage applied between the cathode and the anode. The shape of the bias cup and anode are so designed that the electrons are focused by the electrostatic field and emerge through the anode aperture as a collimated beam. This beam impinges on to the target by the magnetic field of focusing lens, which permits the high concentration of power at the point of impact. The kinetic energy of the electrons is transferred into heat energy which melts / fuses the metal. In general, electron beams in the energy ranges from 100 kV to 10 MV with average powers ranging from 1 kW to 500 kW.


Related Discussions:- Electron beam welding(ebw)-basic principle

Inlet and exhaust valves-basic components of engine , Inlet and Exhaust Val...

Inlet and Exhaust Valves : Valves are commonly mushroom shaped poppet type. They are provided on the cylinder for regulation of the charge coming into the cylinder (inlet valve)

Calculate the maximum stress, Determine the analytical solution for the max...

Determine the analytical solution for the maximum stress in the member shown. Submit screen shots that show the shape of the elements that result with a global element size of 0.15

Heat Pumps, Write an essay on air, water and soil-based heat pumps. Discuss...

Write an essay on air, water and soil-based heat pumps. Discuss the advantages and the disadvantages of each system. For each system identify the conditions under which that system

Concept of continum, in concept of continum what is the meaning of upper cu...

in concept of continum what is the meaning of upper cure

Show the periodic functions, (a) Show following complex numbers in Rectangu...

(a) Show following complex numbers in Rectangular forms : (i) 5e 0.927j (ii) 10e 4.068j (b) Show the periodic functions by Fourier series (Harmonic series).

Co2 gas supply-co2 welding, CO 2 Gas Supply The CO 2 shielding gas is...

CO 2 Gas Supply The CO 2 shielding gas is supplied cylinders at high pressure (140 kg / cm 2 ). Therefore pressure regulator and flow meter are connected to reduce the pressu

Determine the half-space method, Half-space Method Solid representation...

Half-space Method Solid representation is based fundamentally on the notion that a physical object divides an n-dimensional space E n into two regions: interior and exterior,

Torsional Vibration, Free Torsional Vibration of a Single Rotor System

Free Torsional Vibration of a Single Rotor System

Flange facing and surface finish, Q. Flange Facing and Surface Finish? ...

Q. Flange Facing and Surface Finish? Raised face flange facings are preferred. Flat face flanges to be used only when mating with like equipment (fabricated from brittle mat

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