Nemak, S.a.b. De C.v.

Walter Hartl

Alexander Mokre

Liviu Calin

Friedrich Irauschek

Reinhard Mann

Viktoria Dargai

Mark Ensinger

Bettina Ritt

A method for recovery of moulding sand from a foundry sand mixture, which includes at least one proportion of moulding material fragments or loose moulding material grains, which accumulates when a cast part is demoulded from a casting mould as a result of the destruction of casting cores which have been formed from the moulding sand and an inorganic binder. The method includes: a) mixing the foundry sand mixture with cleaning water to form a slurry in order to dissolve the inorganic binder residues contained in the foundry sand mixture and optionally present additives from the moulding sand and to rinse them from the foundry sand mixture, and b) separating the cleaning water contaminated with the inorganic binder residues from the moulding sand contained in the slurry, wherein the process temperature of the slurry formed in step a) is 50 to 200&#xb0; C.

Method for preparing a foundry sand mixture

A casting mold is pivoted about a horizontal pivot axis for casting cast parts in a casting machine. The casting mold has a lid and a reference side wall. A main plane is placed into the reference side wall. A tundish is coupled to the casting mold and the casting mold is then pivoted into a pouring-in position. The tundish filled with a molten metal portion is pivoted with the casting mold about the pivot axis, so that the molten metal flows into the casting mold. An angle &#x3b2;enclosed between the main plane of the reference side wall and a bath level of the molten metal portion in the tundish is constantly &#x3c;180&#xb0; until the melt hits the bottom of the casting mold.

Method for casting cast parts from a molten metal

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Weiten, Austria

Walter Hartl