Device and method for improved cooling of a metallic alloy in a sand mold

The device comprises a sand mold with an inner cavity fillable with a metallic alloy to be solidified inside the inner cavity, thermal energy extracting means embedded at least partially in the sand mold and comprising at least a conduct and a coolant inside the conduct, movable in the conducts for extracting heat from the metallic alloy. A method is proposed comprising the steps of providing a sand mold comprising an inner cavity, providing thermal energy extracting means, the thermal energy extracting means comprising at least a conduct, placing the thermal energy extracting means at least partially embedded in the sand mold, filling the inner cavity with a metallic alloy to be solidified inside the inner cavity and circulating a coolant inside the conduct for extracting heat from the metallic alloy.