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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.
For the angle of projection when the range is equal to distance through which the particle would have fallen in order to acquire a velocity equal to the velocity of projection will
What are the Technical Limitations of screw conveyer Technical Limitations: ? Turning limitation of this mechanism Actually the Maximum Turning of U-joint is 18° to 2
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the component of computer integrated manufacturing with the diagram
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Need someone to help in doing a connecting rod for an engine by using abaqus software version12 or 6.11?
the jet transport B is flying at the velocity of 600km/h when a smaller aircraft A passes underneath the transport headed in the 60 degree direction. To passengers in B, however ap
EXPLANE PLZZ
I have faced a serious problem of Lead segregation and porosity in Copper Tin Zn alloy containing 26-30 % lead sand castings.Can anybody throw light on this
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