Cold Forming

Cold forming is a manufacturing process in which metallic materials are plastically deformed, usually at room temperature. The process takes place below the recrystallization temperature of the respective material. Typical processes include bending, deep drawing, extrusion, rolling, and wire drawing. This deformation results in what is known as work hardening. During this process, the hardness and strength of the material increase, while its ductility decreases. The advantages of cold forming include high dimensional accuracy, good surface quality, and efficient use of material.

In surface engineering, lubricants, pretreatments, and coatings play an important role. They reduce friction between the workpiece and the tool, improve material flow, and reduce tool wear. The quality of the initial surface also influences the outcome of cold forming.