Process Investigation:

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Ollie Long
Process Investigation drawing
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The Process
- In drawing, a blank of sheet metal is
restrained at the edges, and the middle section
is forced by a punch into a die to stretch the
metal into a cup shaped drawn part. This drawn
part can be circular, rectangular or just about
any cross-section.
- Drawing can be either shallow or deep depending
on the amount of deformation. Shallow drawing is
used to describe the process where the depth of
draw is less than the smallest dimension of the
opening otherwise, it is considered deep
drawing.
- Drawing leads to wrinkling and puckering at the
edge where the sheet metal is clamped. This is
usually removed by a separate trimming operation.

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Materials
- Flat rolled metal is used in the drawing
process, particular materials include - carbon -
stainless and alloy steel - copper - brass and -
aluminium
- There are many factors, of the material, which
are taken into consideration when drawing, these
include electrical mechanical properties,
weight corrosion resistance
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Products
- Drawing is the process by which aluminium
drinks cans are produced. Figure 1 shows a can
midway through manufacture, at the point when an
effect called earing takes place and requires
the ears to be cut off.
Figure 1
- Drawing provides parts for industries such
as - Medicine - Electronics - Writing
Instruments and - Lighting
Stages of Ironing and drawing a can.
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Bibliography
www.efunda.com www.design-technology.info www.tech
nobusiness-solutions.com www.thefabricator.com www
.aluminium.matter.org.uk
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