A Bar of initial diameter = 80 mm is drawn with a draft = 16 mm....

 

Transcribed Image Text:

A Bar of initial diameter = 80 mm is drawn with a draft = 16 mm. The draw die has an entrance angle 17°, and the coefficient of friction at the work-die interface = 0.1. The metal behaves as a perfectly plastic material with yield stress = 105 MPa. Determine: (a) area reduction, (b) draw stress, (c) draw force required for the operation, and (d) power to perform the operation if exit velocity 1.5 m/min, 2m/min and 2.5m/min e) discuss you results. Draw die Starting stock D; Final work size A Bar of initial diameter = 80 mm is drawn with a draft = 16 mm. The draw die has an entrance angle 17°, and the coefficient of friction at the work-die interface = 0.1. The metal behaves as a perfectly plastic material with yield stress = 105 MPa. Determine: (a) area reduction, (b) draw stress, (c) draw force required for the operation, and (d) power to perform the operation if exit velocity 1.5 m/min, 2m/min and 2.5m/min e) discuss you results. Draw die Starting stock D; Final work size