Assembly comprised of joined conductive components having cataphoretic paint layer and process for manufacture thereof

US7144492B2 · kind B2 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Wolfgang Becker · Eppstein, DE
• Alfred Fuchs · Bergen, DE
• Klaus Goth · Sindelfingen, DE
• Markus Knoeller · Nagold, DE
• Dirk Lindenau · Stuttgart, DE
• Claus-Dieter Reiniger · Winnenden, DE
• Daniel Zauner · Langenau, DE

Key dates

• Filing date: May 27, 2005
• Grant date: Dec 5, 2006
• Expiry date: May 27, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12569
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The application of anti-corrosion base coating by cataphoretic painting (KTL) is well known in manufacturing automobile body parts. However the cataphoretic paint can penetrate only incompletely or possibly not at all into the gap in the contact areas of the components joined to each other. This type of gap is conventionally scaled following cataphoretic painting, in order to ensure corrosion protection for the entire assembly. The present invention makes it possible to dispense with the sealing in the production of an assembly of joined conductive components and nevertheless to ensure a sufficient corrosion protection. By introducing topographic changes in the components projecting from their surface in the known contact areas and then joining these components, they are spaced apart by the projecting topographic changes in such a manner that during cataphoretic painting the paint wets the entire surface of the assembly.