chapter  1
54 Pages

Part Preparation Processes and Equipment

A coating is applied to a part to enhance its appearance and to protect the substrate material. An organic coating will act as a physical barrier to moisture, but if the coating surface is damaged, the bare metal is exposed, and corrosion can form and spread. The adhesion of the coating and the corrosion resistance of the product depend on the preparation of the surface. Part preparation is often referred to as pretreatment.