Drawing

Drawing is a metalworking process which uses tensile forces to stretch metal. As the metal is drawn (pulled), it stretches thinner, into a desired shape and thickness (fig 1). Drawing is classified in two types: sheet metal drawing and wire, bar, and tube drawing. Drawing is also one type of extrusion. Drawing is usually done at room temperature, thus classified a cold working process, however it may be performed at elevated temperatures to hot work large wires, rods or hollow sections in order to reduce forces.

Sheet Metalworking

Sheet metal is simply metal formed into thin and flat pieces. It is one of the fundamental forms used in metalworking process. Thicknesses can vary significantly, although extremely thin thicknesses are considered foil or leaf, and pieces thicker than 6 mm are considered plate.

Forming Processes are:

• Cutting Operation
• Bending Operation
• Drawing
• Other Sheet-metal Forming
• Dies and Presses
• Sheet-metal Operation
• Bending of Tube Stock

Wire drawing

Wire drawing is a metalworking process used to reduce the cross-section of a wire by pulling the wire through a single, or series of, drawing die or dies. For wire, bar, and tube drawing the starting stock is drawn through a die to reduce its diameter and increase its length (fig1).