Abstract: In a filter element in which, for flow stabilization and/or purifying a melt used during casting, the melt is guided through the filter element, the filter element is designed as three-dimensional rib structures with openings as flow channels through which liquid melt is guided. The ribs of the rib structure are formed by particles made of a material that can be used as a mold material in casting technology, and by a binder by means of which the particles can be integrally bonded. The ribs are also provided on their surface with a coating of a polymer resin.

Abstract: An apparatus for melting metals whose melting temperature is below 1000° C. may have a device for forming a plasma arranged on a melting furnace. The device is connected to an electrical voltage supply and to the device at least one first supply for a plasma gas, with which the plasma can be formed, and is designed, dimensioned, arranged and/or aligned in such a way that the formed plasma is arranged at a distance from the metal as the material to be melted, and in this case a hot gas stream can be formed with the plasma, which hot gas stream is aligned in the direction of the material to be melted, and a melting tank or crucible is arranged in the melting furnace to receive the molten metal.

Abstract: A method for the production of cores and molds for casting molds, based on a base molding material and an organic or inorganic binding agent and an additive. According to the method, pre-forming substances are used in order to dispense with the use of sizing substances and to prevent the formation of ribs.

Abstract: A method for the production of cores and molds for casting molds, based on a base molding material and an organic or inorganic binding agent and an additive. According to the method, pre-forming substances are used in order to dispense with the use of sizing substances and to prevent the formation of ribs.