METHOD AND APPARATUS FOR PRODUCING METALLIC CASTING MOULDS USING THE LOST WAX CASTING METHOD

摘要

Production of a metallic cast body after precision casting comprises heating a region of the casting mold lying above the coolant level to a temperature above the solidus temperature of the metal or alloy to be cast using a heat carrier gas. The heat carrier gas is oxygen or a gas which can be exothermally oxidized. An independent claim is also included for a heating hood for carrying out the above process comprising a post-combustion zone for burning exhaust gases removed from the hood.