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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.
Initial Graphics Exchange Specifications (IGES) The basic concept of IGES is concerned with the exchange of product description data from one CAD system to another one. The CAD
Magnesium And Its Alloys Magnesium is a light metal along with density of 1.74 g/cm 3 . Magnesium is more costly than aluminium as density 2.74 g/cm 3 along with which it comp
STORAGE & QUALITY OF CO 2 GAS CO 2 gas is supplied in cylinders at a high pressure (140 kg / cm 2 ). When the cylinder is full, nearly 90 % of the volume is filled with CO 2
Question: As shown in the figure, the jet transport B is flying north with a velocity V B = 600 Km/h when a smaller aircraft A passes underneath the transport headed in the 60
Equilibrium of body on the rough inclined plane: If the inclination is less than angle of friction, the body remains in equilibrium without any external force. If body is to b
Necessity of Cooling System To prevent the engine from excessive heating. To avoid the piston seizure due to thermal expansion. To prevent burning of lubricant a
Files: Files are used to remove excess metal by cutting action. These can be classified according to their length, shape, cross-section.
Ask DIFFERENTIAL AMPLFIER USED WITH THERMOCOUPLEquestion #Minimum 100 words accepted#
A cantilever beam of 4 metre length is loaded with uniformly distributed load of 20 KN/m throughout the whole beam. It is also loaded with 30 KN operating at 3m from the fixed end
• For the ASTM dogbone specimens, the ¾ inch hole specimens, and the notched specimen tabulate the failure load, in pounds. • Show plots of stress and strain for all specimens w
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