Drawing.
Drawing is a process used for manufacturing wires.
In drawing metal is pulled through a die-opening by a tensile force. In
extrusion, we have seen that it is pushed through the die-opening by the
compressive force. Like other processes, in drawing too, both ‘cold drawing’
and ‘hot drawing’ are in use.
The input stock’s insertion end is
initially made spiky [pointed] so that it passes through the die-opening. Then
this end is held by the puller and pulled out. For cold drawing more tensile
power is required than that for hot drawing. Though the drawing process is
widely adopted for most of the wires, it is also used many times for round
bars, square bars, angles, ‘T’s etc.
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