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A 100 mm long cylindrical workpiece of diameter 50 mm is reduced to 25 mm diameter using extrusion process

A 100 mm long cylindrical workpiece of diameter 50 mm is reduced to 25 mm diameter using extrusion process

Q. A 100 mm long cylindrical workpiece of diameter 50 mm is reduced to 25 mm diameter using extrusion process. The flow curve for the metal has strength coefficient as K = 750 MPa and the strain hardening co-efficient is 0.15. Assuming no friction and no redundant work, the required ram pressure (in MPa) is closest to

Ans: 950

Sol:

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