ELECTRICALLY INSULATED METALLIC SURFACES WITH INTERIOR CORNERS

摘要

An effective electrically insulating film (4) on the surface of a metal object, such as a common type of electric motor core assembly, in which the surface includes an interior corner on which insulation (4) is desired, can be formed by autodeposition with an adequate thickness in the interior corner without need for excessive thickness on the other parts of the surface that are more readily covered by prior art methods of applying an insulating coating (4). If the autodeposition composition used includes as its primary film-forming component a copolymer of certain acrylic monomers, a very high volume resistivity can be achieved.