Answer Happy

A billet 75 mm long and 25 mm in diameter is to be extruded in a direct extrusion operation with extrusion ratio of 4.0 and ram velocity of 20 mm/min. The extrudate has a round cross section. The die angle (half angle) is 90 degrees. The strength coefficient and strain hardening exponent for the workpiece are K = 415 MPa and n = 0.18. Assume that a = 0.8 and b = 1.5 in estimating the actual forces. = = 1. How much pressure is actually applied to the end of the billet to accomplish the extrusion?: [ Select] MPa 2. How much power is required to move the ram forward?: [Select] w