Patent ID: 6942007
Filing Date: 2005-09-13
Classification: B22C

Abstract:
1. A method for making a casting having at least one cavity defined by the positioning of a core, such as an aluminum alloy cylinder head for an engine, the method comprising the following steps: making a metal insert having at least one support surface suitable for co-operating with corresponding bearing arrangements on a mold element, and at least one element for anchoring to the core; making the core in a core box in which the insert has previously been placed in a predetermined position so that an end region of the core becomes anchored to said insert via the anchoring element(s) thereof; and placing the core with its insert in the mold in a position that is predetermined only by co-operation between the support surface(s) of the insert and the bearing arrangements of said mold element, and wherein said insert minimizes deposition of scale from the core material onto said bearing arrangements of said mold element so that the accuracy of the core position is improved.