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Variation

Drawing of Sheet and Plates

Drawing is a plastic deformation in which a flat sheet or plate is formed into a recessed, three-dimensional part with a depth several times the thickness of the metal.

As a punch descends into a die or the die moves upward over a punch, the metal assumes the configuration of the mating punch and die tooling.

We distinguish hot drawing and cold drawing.

Hot drawing is used for forming relatively thick-walled parts of simple geometry, usually cylindrical. The thickness of the material reduces considerably as it moves through the dies. This process is used in forming components such as oxygen tanks and large artillery shells.

Cold drawing uses relatively thin metal, changes the thickness very little or not at all, and produces parts in various shapes.

 

Method of cup drawing or hot forming