METHOD FOR THE PRODUCTION OF MOULDED METAL PIECES

摘要

The invention relates to a method for the production of moulded metal pieces , in particular of weight-reduced moulded pieces made from metallic materials. A metallic body with a closed all-encompassing surface and an internal hollow structure as a core is placed in a casting mould and a liquid melt poured in around the above. The surface region of the metal body has an average densit y higher then the interior of the metal body by a factor of 1.5 to 20.