An orthogonal cut 3.18 mm wide is made at a speed of 33.5 m/min and feed of 0.25 mm/rev with a high-speed steel tool having a rake angle of 18o. The chip thickness ratio is 0.58, the cutting force is 1379 N, and its associated normal force Ft is 356 N. Determine the Chip thickness Shear plane angle Magnitude of the resultant force Coefficient of friction on the face of the tool Magnitude of the friction force and associated normal force Magnitude of the shearing force and associated normal force Specific energy

A3-mm-thick panel of aluminum alloy (k 177 w/m-k, c 875 j/kg-k and ? = 2770 kg/m) is finished on both sides with an epoxy coating that must be cured at or above t,-150°c for at least 5 min. the production line for the curing operation involves two steps: (1) heating in a large oven with air at ts,0-175°c and a convection coefficient of h, 40 w/m2. k, and (2) cooling in a large chamber with air at 25°c and a con- vection coefficient of he 10 w/m2.k. the heating portion of the process is conducted over a time interval te which exceeds the ime required to reach 150°c by 5 min (h = r + 300 s). the coating has an emissivity of ? = 0.8, and the temperatures of the oven and chamber walls are 175 and 25°c, respectively. if the panel is placed in the oven at an initial temperature of 25°c and removed from the chamber at a safe-to-touch tempera ture of 37°c, what is the total elapsed time for the two-step curing operation?