Alkaline zinc rack plating is the process of coating larger, heavier or geometrically sensitive parts that are not suitable for barrel plating by hanging them individually on special fixtures, known as racks. This method prevents parts from hitting each other, preserving surface quality, and is especially preferred for critical components where aesthetic appearance is as important as functionality. Thanks to the excellent throwing power provided by alkaline electrolytes, a homogeneous coating thickness can be achieved even in the deepest areas of complex-shaped parts, ensuring equal corrosion resistance across every section of the component.
In industrial applications, rack-type plating is a fundamental requirement in sectors such as automotive exterior components, defense industry parts and machinery manufacturing, where high precision is essential. Especially in threaded parts requiring ease of assembly or in engineering designs with narrow tolerances, the controlled coating structure offered by alkaline baths provides a major advantage. With functional passivations and friction coefficient-regulating lacquers applied after the process, the parts become highly resistant to harsh outdoor conditions while gaining the professional, clean and smooth metallic appearance required by modern industry.