GATE MT 2015 Q30. Which of the following metal forming techniques is used to produce soft drink cans from aluminium sheets?

Correct answer is option C.

• Deep drawing is a sheet metal forming process in which a sheet metal blank is radially drawn into a forming die by the mechanical action of a punch.
• It is thus a shape transformation process with material retention.
• The process is considered “deep” drawing when the depth of the drawn part exceeds its diameter.
• This is achieved by redrawing the part through a series of dies. Softer materials (like Aluminium) are much easier to deform and therefore require less force to draw.