Composite part containing metallic foam and method for producing said composite part

A process for manufacturing a sandwich component which comprises at least two metallic sheet metal parts located opposite one another and a metal powder layer to be expanded, which is arranged between the sheet metal parts, the process comprising:

• providing the at least two metallic sheet metal parts with the metal powder layer;
• subsequently arranging the two sheet metal parts one on top of another with their sides provided with said metal powder layer facing each other;
• inserting a shaped sheet metal part between said two sheet metal parts;
• subsequently heating said sheet metal parts lying one on top of another by supplying heat such that a connection that cannot be detached without destruction is established between said metal powder layers facing one another by a heat-induced expansion process.

A sandwich component, comprising;

• a first metallic sheet metal part;
• a second metallic sheet metal pan located opposite said first metallic sheet metal part;
• a metal powder layer to be expanded, which is arranged between said first sheet metal part and said second sheet metal part:
• reinforcing elements at individual cross-sectional areas, said reinforcing elements being connected to said metal powder layer surrounding said reinforcing elements, said metal powder layer in turn being connected to the outer metallic sheet metal parts in such a manner that the connection cannot be detached without destruction.