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(3) 82 dre d deraventeges of orging Whan eomparad to machining of parts? (A) A Amierled copper stip 228mm Wda and 25mm thick is rolled
(3) 82 dre d deraventeges of orging Whan eomparad to machining of parts? (A) A Amierled copper stip 228mm Wda and 25mm thick is rolled to a thickness of 20mm in ons pass. The roll radius 18300mm, and the rolls rotate at 100rpm. (4) 4.2Tine power required. (4) (Hint, Ariealed copper has a true stress of 80 Mpa in he unstrained condilion and at a lue strain di 0,223 , lrue stress is 280 Mpa) A metal obeys lhe Hollomon relationsinj and ias a UTS of 350 Mpa. To reach miakimum arad lequeres an elorgalom of 30% or. Find. 5. The streman edeflemt. (4) (2) Ousitines Caleuala de watua of lie stian fiardering exponent for a metal that will eause the average low sthess lo le 3 d of lle final flow stress after deformation
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