ENGM 445 Chapter 18 Part 2 Discussion Questions and Example Problem and answers verified to pass

ENGM 445 Chapter 18 Part 2 Discussion Questions and Example
Problem
1. Suggest two ways of making a dumbbell shape. Heading and die.

2. Suggest two ways of making a thick walled tube. Make
Roll piercing. simple sketches to show the essence of
the proposed deformation methods.

3. Which three of the following are basic bulk Bar drawing, extrusion,
deforma- tion processes in metal forming: and forging.
(a)bar drawing
(b)blanking
(c)deep drawing
(d)extrusion
(e)forging
(f) stamping

4. Which one of the following is the starting workpiece in Slab.
hot rolling of steel plate and sheet stock:
(a)bar stock
(b)billet
(c)bloom
(d)slab
(e)wire stock

5. In a flat rolling operation, the draft is which one of the The
ditterence between
following: the starting thickness
and
(a)reduction in thickness divided by the starting thick- the final
thickness as the
ness (d)thickness
(b)reduction in thickness during one pass before rolling
(c)thickness after rolling divided by thickness divided by
before rolling thickness
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, ENGM 445 Chapter 18 Part 2 Discussion Questions and Example
Problem
after rolling (e) The difference between the work piece passes be-
starting thick- tween the two
opposing rolls.




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