Patent DE-102010061502-A1 (DE)
Title: Joining composite metal part and constructing sheet metal, comprises providing two outer cover plates made of metal and non-metallic layer arranged between the cover plates with other components made of metal
Inventor: CHERGUI AZEDDINE
IPC: B21D39/03
Filed: 2010-12-22
Abstract: The method of joining composite metal part (1), comprises providing two outer cover plates made of metal and a non-metallic layer arranged between the cover plates with an other components made of metal. Two outer cover plates of the composite metal part are partially overlapped from the component, and are joined in an overlapping area of the component with the two outer cover plates of the composite metal part. A connecting part made of metal is alternatively or cumulatively used that partially overlaps with or both sides of the outer cover plates of the composite metal part. The method of joining composite metal part (1), comprises providing two outer cover plates made of metal and a non-metallic layer arranged between the cover plates with an other components made of metal. Two outer cover plates of the composite metal part are partially overlapped from the component, and are joined in an overlapping area of the component with the two outer cover plates of the composite metal part. A connecting part made of metal is alternatively or cumulatively used that partially overlaps with or both sides of the outer cover plates of the composite metal part. The connecting part: is joined in the overlapping area with two outer cover plates of the composite metal part; and is connected before or after joining with the composite metal part with the component over a material-, form-, and/or positive connection. The connecting part of the composite metal part and the component is partially overlapped on both sides. The component is a sheet metal made from solid material or composite material. The connecting part has s-shaped, y-shaped, double y-shaped or x-shaped cross-section and/or flange for receiving regions of the composite metal part to be overlapped. Edges received in the overlapping area of the composite metal part are partially sealed by tightly gluing. The joining is carried out by a resistance welding, a laser welding and a soldering or gluing. Terminal electrodes, roller electrodes and/or current bridges are utilized for forming a current path with the resistance welding. The resistance welding of the two current paths is formed with two sides. A first current path (8) extends itself by a first welding electrode (6) and the two outer cover plates of the composite metal part to a contacting electrode or a second welding electrode. A second current path extends itself by the first welding electrode over the overlapping area of the component, and/or the connecting part extends itself by the component to the contacting electrode or the second welding electrode. The connecting part has coinages extending itself towards the composite metal part, where the coinages are pressed before the resistance welding by the non-metallic layer of the composite metal part so that welding connection points are formed during the resistance welding at a breakthrough location of the coinages. A fusion welding is carried out by a laser beam in which the laser beam of the outer cover plates of the composite metal part is not completely penetrated. A metal inert gas-soldering is performed, where the outer cover plates of the composite metal part are soldered with the overlapping area of the component and/or the connecting part. An independent claim is included for a sheet metal construction.