Question

Referring to the metal extrusion manufacturing process, answer the following: a. Why do you need to...

Referring to the metal extrusion manufacturing process, answer the following:

a. Why do you need to preheat the billet?

b. What effect does the extrusion speed have on the properties and the quality of the extrusion?

Engineering   Mechanical-Engineering   
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Homework Answers

Answer #1

A) Higher temperature allow the high extrusion speed , specially when the press is at maximum pressure.higher Temperature prevent from the break dia.

B) there are various effect of extrusion speed-

1- it result coarsening and the mechanical properties deterioration

2- hardening response growth decrease.

3- it could strengthen the alloy

4 - limit the extrudability of metal.

5- Rapid crack and growth occurs.

6- effective strain distribution achieved after increasing the speed.

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