Verfahren zur Herstellung eines Verbundkoerpers und Zwischenprodukt zur Herstellung eines Verbundkoerpers

(B3) Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Verbundkoerpers, der zumindest ein Bauteil enthaelt, dass mit einem Schaumkoerper verbunden ist, aufweisend die folgenden Verfahrensschritte: Zuordnen eines aus schaeumbarem Material bestehenden Presslings zu dem Bauteil, wobei der Pressling und das Bauteil lose in Anlage gebracht werden, Umformen des Bauteils derart, dass das Bauteil mit dem Pressling eine form- und/oder kraftschluessige Verbindung eingeht, und Aufschaeumen des aus schaeumbarem Material bestehenden Presslings durch externe Waermezufuhr, sowie ein Zwischenprodukt zur Herstellung eines Verbundkoerpers.

DE 102007006156 B3 UPAB: 20080711 NOVELTY - A foamable pressing (2) is brought into a cavity (3a) of the component (1a). The pressing and component make loose contact; the cavity volume exceeds that of the pressing. The component is deformed such that the component and pressing undergo interlocking and/or frictional bonding. The pressing is foamed by supplying heat externally. In an otherwise similar process, the foamed pressing includes the cavity into which the component is introduced. DETAILED DESCRIPTION - The deformation is caused by extrusion. Heat treatment follows immediately, to induce foaming. In a further variant of the process, a foamable powder is used in place of the foamable pressing. The component is a thermal conductor, through which heat is supplied to the foamable material. A first layer of foamable material used to make the composite, has a lower liquidus temperature than a second layer. The first layer largely comprises compacted aluminum powder. The second is aluminum or aluminum alloy. AN INDEPENDENT CLAIM IS INCLUDED FOR an intermediate product so produced. USE - To make a composite intermediate product, comprising a component bonded to a foamed body, for e.g. reinforcement. ADVANTAGE - Premature melting of the component is prevented in this process. Costly, slow operations such as adhesion are avoided. Defined quantities of material are used to produce a composite with maximum contact area between foam and the component. Heat transfer between the component and the pressing are improved and prior melting of the component during foaming is avoided. The foamable material used can be in solid- or powder form. When the extruded composite is based on aluminum, an especially lightweight product results.