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Mounting Systems For The Welding Head-Boom mounted type
These are the most versatile type of welding systems. Normally the boom is supported by means of a column. The welding head along with carriage is mounted on to the boom and longitudinal movement is provided on the carriage. The boom itself is provided with a drive, to move in the transverse direction. Because of the X and Y movements available to this set up, they find extensive applications in longitudinal welding of internal and external surfaces of cylinders and in the manufacture of plate formed pipes and shells.
Nominal Strain and True Strain: Nominal Strain is ratio of change in length per initial length. Nominal strain = Change in length / Initial length = Δ L / L
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