Basf Se Corporation

Sabic Innovative Plastics IP B.v.

Trumpf Laser- Und Systemtechnik Gmbh

Inpro Innovationsgesellschaft Fur Fortgeschrittene Produktionssysteme in Der Fahrzeugindustrie Mbh

Audi Ag

Michael Minkow

Leo Hoffmann

Fred Eggers

Olaf Hoyer

Holger Klink

Jan Gaugler

Matthias Schulenburg

Kim Kose

Stephan Ohnimus

Harald Ott

Gerardus Doggen

Birgit Faisst

Gerardus Johannes Cornelis Doggen

Gerd Eßer

Alexander Näck

Lea Inpro Gmbh Stechmann

Gerd Esser

The present invention relates to a method for producing a plastic-metal hybrid component, in which, in order to improve the adhesion of a metal surface, provided with a corrosion protection layer, of a base body made from metal and at least one plastic component, the corrosion protection layer of the metal surface of the base body is provided with a surface structure having undercuts. In order to avoid damage to the corrosion protection layer a filler material that binds well with the corrosion protection layer is applied on the corrosion protection layer in a specific and limited manner, in the form of successive, preferably metal elements having geometrically determined and/or geometrically indeterminate shape, via relative movement with respect to same. The elements of the filler material applied to the corrosion protection layer are each melted, for example by means of a laser, and welded on the corrosion protection layer, producing the surface structure, having the undercuts, of the corrosion protection layer of the metal surface of the base body. In a subsequent direct spraying process, the undercuts of the surface structure are at least partially filled with a thermoplastic plastic component in such a way that the latter engages in the undercuts, forming the plastic-metal hybrid component.

Method for producing a plastic-metal hybrid component

The invention relates to a method for producing a material composite composed of metal and plastic to form a plastic-metal hybrid component, in which method, to improve the adhesion of the metal surface and at least one plastic component, stochastically random macroscopic and/or microscopic undercuts are made by means of short-pulse laser radiation in the metal surface in order to roughen it, these undercuts each being filled at least partially with the at least one plastic component in an injection moulding process such that said plastic component engages into the macroscopic and/or microscopic undercuts, wherein, following the roughening of the metal surface and before and/or during the injection moulding process for the at least one plastic component, at least the roughened surface of the metal is heated to a temperature which, during processing, lies in the range of room temperature up to 100&#xb0; C. above the processing temperature of the plastic.

Method for producing a material composite composed of metal and plastic to form a plastic-metal hybrid component

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Berlin, Germany

Michael Minkow