Acylindrical specimen having a diameter of 150mm and a height of 100mm is subjected to open-die forging. assume the friction coefficient is 0.2. find the upsetting force required when the instantaneous height of specimen is 75mm. use average pressure formula.(for the material, k

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.