Drawing

Drawing is the process of reducing cross sectional diameter of wire, bar or tube. This is done by applying a tensile force to the material and pulling it through a die with a smaller opening than the original cross section. Drawing usually occurs at room temperature, which induces strain hardening in the material and increases its strength and hardness. Most drawing processes are performed over several steps, with each step reducing the diameter by a certain percentage. The final product has a uniform cross section and improved surface finish. Some examples of components that are generated through drawing are nails, screws, bolts, wires, cables, rods, tubes and pipes.