Aluminum casting core comprises sand core part, and salt core part, where sand core part partially, positively surrounds salt core part and wall thickness of the sand core part is thinner relative to a wall thickness of the salt core part

The aluminum casting core (11) comprises a sand core part (10), and a salt core part (20a), where the sand core part partially, positively surrounds the salt core part. A wall thickness of the sand core part is thinner relative to a wall thickness of the salt core part (1.5-2.5 mm). The salt core pa...

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Bibliographic Details
Main Author SCHEYDECKER, MICHAEL
Format Patent
LanguageEnglish
German
Published 21.03.2013
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Summary:The aluminum casting core (11) comprises a sand core part (10), and a salt core part (20a), where the sand core part partially, positively surrounds the salt core part. A wall thickness of the sand core part is thinner relative to a wall thickness of the salt core part (1.5-2.5 mm). The salt core part is a salt plate (20), which is positively connected with a plate edge of the sand core part. The salt plate placed at the plate edge comprises an edge section, to which the salt plate is positively embraced in the sand core part. The aluminum casting core (11) comprises a sand core part (10), and a salt core part (20a), where the sand core part partially, positively surrounds the salt core part. A wall thickness of the sand core part is thinner relative to a wall thickness of the salt core part (1.5-2.5 mm). The salt core part is a salt plate (20), which is positively connected with a plate edge of the sand core part. The salt plate placed at the plate edge comprises an edge section, to which the salt plate is positively embraced in the sand core part. A wave form comprises an edge section at its plate edges facing the sand core part, where the plate edges turned to the sand core part conically run to a lower edge. The salt plate at upper and/or lower plate edges comprises positioning connecting pieces, which are more bringable with a casting tool in an intervention. The salt plate comprises a breakdown (22). The aluminum casting core forms a cylinder crankcase of a motor vehicle. The sand core part forms a water jacket core. The salt plates in the sand core part are parallelly arranged to each other in regular intervals and form outer contours of cooling passages in cylinder bars. An independent claim is included for a method for preparing an aluminum casting core. Die vorliegende Erfindung betrifft einen Aluminiumgusskern (11), der aus einem Sandkernteil (10) und einem oder mehreren Salzkernteilen (20a) besteht, wobei der Sandkernteil (10) den Salzkernteil (20a) formschlüssig teilweise umgibt. Ferner beschreibt die Erfindung ein Verfahren zur Herstellung des Aluminiumgusskerns (11), das zunächst ein Herstellen eines oder mehrerer Salzkernteile (20a) aus einer Salzschmelze umfasst. Hiernach wird ein Kernschießwerkzeug bereitgestellt und einer oder mehrere Salzkernteile darin positioniert. Das Kernschießwerkzeug wird mit einer Sand-Bindemittel-Mischung gefüllt, dabei werden die Randabschnitte (21a, 21b) des jeweiligen Salzkernteils (20a) mit der Sand-Bindemittel-Mischung umspült. In dem Kernschießwerkzeug erfolgt ein Aushärten zu einem Sandkernteil (10), der die Randabschnitte des jeweiligen Salzkernteils (20a) von dem Sandkernteil ganz oder teilweise formschlüssig umgibt.
Bibliography:Application Number: DE20121019192