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An aluminum alloy billet is being hot extruded from 20-cm diameter to 5-cm diameter as sketched in Figure 6.10. The flow stress at the

An aluminum alloy billet is being hot extruded from 20-cm diameter to 5-cm diameter as sketched in Figure 6.10. The flow stress at the extrusion temperature is 40 MPa. Assume n = 0.5. a) What extrusion pressure is required? b) Calculate the lateral pressure on the die walls. Pext die billet die 20 cm 5 cm

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