Question: 1 - Estimate the force required for punching a 4 0 - m m diameter hole through a 2 . 5 - m m thick

1- Estimate the force required for punching a 40-mm diameter
hole through a 2.5-mm thick Mild steel sheet at room
temperature ( UTS =450MPa. )
2- Find the Diameters of the Punch and Die for Punching.
3- Find the Diameters of the Punch and Die for Blanking.
1 - Estimate the force required for punching a 4

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