ENGM 445 Chapter 18 Discussion Questions and Example Problems and answers already passed

ENGM 445 Chapter 18 Discussion Questions and Example
Problems
1. Which two of the following are alternative
Backward extrusion
names for indirect extrusion:
and reverse
(a)backward extrusion
extrusion.
(b)direct extrusion
(c)forward extrusion
(d)impact extrusion
(e)reverse extrusion

2. In metal extrusion, the extrusion ratio is also known by Reduction
ratio.
which one of the following terms
(a)area reduction
(b)draft
(c)reduction
(d)reduction ratio

3. Production of tubing is possible in indirect (d)tensile
extrusion but not in direct extrusion: strength
(a)True (e)yield
(b)False strength

4. Which extrusion process yields the higher
ram pres- sure for the same cross-sectional
shape and area:
(a)direct extrusion
(b)indirect extrusion

5. Which of the following stress or strength
parameters is used in the computation of
the force in extrusion:
(a)average flow stress
(b)compression strength
(c)final flow stress
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, ENGM 445 Chapter 18 Discussion Questions and Example
Problems
False. Tubing is possible for both.




Direct extrusion.




Average flow stress.




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