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 sealed 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.

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.

Abstract: A method for manufacturing an add-on unit made up of car body sheets, the add-on unit having at least two overlapping sheets, in which one edge area of a first sheet is folded over an edge area of a second sheet. In order to enable direct assembly of the add-on unit into the body-in-white, after the folding process, the edge areas of the sheets are joined together in sections by applying heat on one side. In addition an add-on unit is manufactured using this method.

Abstract: In the manufacture of automobile body parts the application of anti-corrosion base coating by means of cataphoretic painting (KTL) is well known. However a gap occurs in particular in the contact areas of the components joined to each other, into which the cataphoretic paint can penetrate only incompletely or possibly not at all. Thus, this type of gap is conventionally sealed 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. This is achieved by introducing topographic changes in the components projecting from their surface in the known contact areas and then joining these components such that 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.