Method for Casting Castings

Abstract

The invention relates to a process for casting castings, in which a metal melt is poured into a casting mold, The casting mold, formed as a lost mold, consists of one or more casting mold parts or cores which are formed from a molding material consisting of a core sand, a binder and optionally one or more additives for adjusting certain properties of the molding material. In the course of the method according to the invention, the casting mold is provided. The casting mold is enclosed in a housing, forming a filling space between at least one inner surface section of the housing and an associated outer surface section of the casting mold. The filling space is filled with a pourable filling material which has such a low bulk density that a gas flow can flow through the filling material package formed there from the filling material after the filling of the filling space, and the metal melt is poured into the casting mold. The casting mold begins to radiate heat as a result of the heat input caused by the hot metal melt, and wherein as a result of the heat input caused by the metal melt the binder of the molding material begins to evaporate and burn, so that it loses its effect and the casting mold disintegrates into fragments. In accordance with the invention, the filling material has a filling material temperature of less than 100° C. when it is filled into the filling space, so that the rapid and energy-efficient decomposition of the casting mold can be achieved with reduced effort.

Dependencies are inferred from the claim text.