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

Determine the residual plastic strain in the members, As part of the fitti...

As part of the fitting of the mooring lines to a wave energy device, the pin-jointed structure shown in Figure Q is to be subjected to a small degree of plastic deformation by appl

Basic s.i. units and its derived unit - mechanics, Basic S.I. Units and its...

Basic S.I. Units and its derived unit: S.I. stands for "System International Units". There are three quantities in the Standard International Systems as concerned to Mechanics

Illustrated about the term bending moment, Illustrated about the term bendi...

Illustrated about the term bending moment? Bending Moment The critical section for bending moment for masonry or concrete block walls is half-way between the centre line and

Corrosion resistance of the nickel-based alloys, Q. Corrosion resistance of...

Q. Corrosion resistance of the nickel-based alloys? The corrosion resistance of the nickel-based alloys can also be significantly affected by other variables such as velocity a

Spot welding of different metals-low carbon steel, Spot welding of differen...

Spot welding of different metals-Low carbon steel Normally, mild steel can be spot welded from the thinnest gauges to a maximum of two pieces of 12 mm thickness. The restrictio

Soil conditions for plant layout, Q. Soil conditions for plant layout? ...

Q. Soil conditions for plant layout? Soil conditions affect the foundation requirements, drainage, type of substructure used and may limit the size and shape of the facility. T

Introduction to welding processes, INTRODUCTION TO WELDING PROCESSES We...

INTRODUCTION TO WELDING PROCESSES Welding is a material joining process used in making welds and a weld is a localised coalescence of metals or non metals produced either by he

Bending equation, State and define the bending equation and mention it''s u...

State and define the bending equation and mention it''s units and derive it

Balancing, what do you mean by static and dynamic unbalance in machinery

what do you mean by static and dynamic unbalance in machinery

FEED WATER PUMP, #what is the ratio between thirst pr. and discharge pr.? ....

#what is the ratio between thirst pr. and discharge pr.? ..

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