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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.
D i f fe r enc e between components and resolved parts: 1. When the force is resolved into two parts along the two mutually perpendicular directions, the parts along th
Which type of study require for mechanial engineering
Q. Wha t do you mean by section modulus ( Z )? What is value of bending moment in the terms of section modulus? Sol.: Section modulus is ratio of M.I. about neutral ax
Estimate temperature of air at exit from compressor: The air compressor compresses atmospheric air at 0.1MPa and 27 0 C 10 times the inlet pressure. During compression heat
general characteristic of bulk deformation and different process and corresponding product properties
Ballast: Ballast is the layer of broken stone provided on the formation on which the sleepers rest. The stones are cubical in shape and pass through 50 mm square mesh. The fu
#quesThe spring controlled governor of the “Hartung” type has two rotating masses each of 3.5 kg and the limits of their radius of rotation are 100 mm and 125 mm. The each mass is
Q. Carbon and Low Alloy Steels for Welding? All welding of pressure retaining equipment must be completed as per the respective code, typically ANSI/ASME B31.1 or Section VIII
Transformer Type Power Sources These are the simplest and cheapest type available for arc welding. These are the mainly used for SMAW, AC SAW and gouging applications. These are
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
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