Priming of Bimetallic Assemblies

It is often desirable or necessary to use more than one metal type to fabricate a unit in the automotive industry. These bimetal assemblies may present problems with regard to proper initial painting and performance under field conditions. Good painting practices for use with galvanized steel-steel and aluminum-steel assemblies are presented using solvent-type and electrodeposition-type primers. Some of the associated problems and their effects are discussed.