COLD METAL WORKING
Having already discussed metal working techniques and the differences between hot and cold working, this week’s #FocusOn will look deeper into the types of cold working.
Cold working generally is used on sheets of steel and aluminium. Steel and aluminium sheets can be bent and processed to obtain hollow finished products. A typical cold working technique is called deep drawing, which is an ancient form of metal working. During this process, the sheet is drawn into a die through the action of a punch, thus giving it its desired shape. This technique allows flat sheets to be transformed into concave shapes, all while maintaining the metal’s thickness. Pots, covers, the outside of home appliances, and auto parts are often made using the deep drawing technique.