Question

A tube of 20 mm external diameter and 1.5 mm thickness is to be reduced to l6mm external diameter and 0.5 mm thickness. The die angle is $24^\circ$ and plug angle is $16^\circ$. The coefficients of friction at die and tube interface and tube and plug (mandrel) interface is 0.5. The flow stress of tube material is $340 N/mm^2$. The tube drawing is carried at a speed of 0.4 m/s. Calculate the fixed plug.

Answer 1

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