Determine the shape factor for the extrusion die orifice shape shown in the Figure $*$

below

dimensions are in mmA billet $75mm$ long and $25mm$ in diameter is to be extruded in a direct extrusion $*$

operation with extrusion ratio $rx=4.$ The extrude has a round cross section. The

work metal has a strength coefficient $K=415$MPa and strain hardening exponent

$n=0\mathrm{.}18.$ Use the Johnson formula with $a=0\mathrm{.}8$ and $b=1\mathrm{.}5$ to estimate the extrusion

strain. Determine the following for a remaining billet length $L=25mm$ :

Ideal Strain $($Value and unit$)$

Extrusion strain $x($Value and unit$)$

Average flow stress Yf $($Value and unit$)$

$4,$ Ram pressure $P($Value and unit$)$

Ram Force $F($Value and unit$)$