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NUCLEAR APPLICATIONS OF ELECTRON BEAM WELDING
Electron beam has been applied to the fabrication of fuel elements for pressurised water reactors and the distinct advantages are:Vacuum environment prevents contamination of the weld joint and ensures that the weld metal possesses good corrosion resistance & mechanical properties. High concentration of weld heat, the concentration of thermal energy is an important advantage of EBW of plate t ype fuel element s. High concentration of heat reduces shrinkage and thermal distortion for example, in fuel elements welding, total transverse shrinkage weld seam is only 0:02 mm to 0:04 mm for electron beam welds. Complex welded structures of molybdenum are being EB welded.
Pier and Well Foundations Pier foundations are used when the loads to be transmitted are heavier than loads those can bc acconlplished by piles. They are essentially bearing i
A 2 Kg mass is suspended in a box by a spring as shown in figure. The box is put on a platform having vibration y = 0.8 sin 6t cm. calculate absolute amplitude of mass
Tropical geometric information of solids A face is surrounded by a set of vertices. Using the right-handed rule, the ordering of these vertices for describing a particular face
Q. Formed heads of vessels? Formed heads are generally of 2:1 semi ellipsoidal form, but other heads may be used, such as hemispherical, torispherical, conical and toriconical.
(a) What will happen if air filter is not used? (b) What are the components of an air filter? (c) What precautions should be followed while cleaning the air filter? (d) What grade
Grinding Wheels Implicated to be rotated at relatively high rotational velocities within grinding machines, grinding wheels contain a surface of rotation about a central axis.
Follow board pattern This type of pattern is adopted for those castings where there are some portions which are structurally weak and if not supported properly are likely to br
What is the diff between system underfoing cycle and system undergoing process
‘coefficient of insensitiveness’ of governors
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