Ask Chemicals Gmbh

Jörg Körschgen

Christian Priebe

Diether Koch

Heinz Deters

Jens Müller

Martin Oberleiter

Marcus Frohn

Pierre-Henri Vacelet

Sarah Voss

Markus Bung

The subject matter of the invention are sizing compositions containing an aqueous carrier liquid, refractory base materials and CH-acidic compounds, as well as their use for casting molds, as well as casting molds coated with the sizing composition.

Sizing composition for casting molds for metal casting, method for producing the casting molds, and casting molds provided with the sizing composition

The invention relates to a mold material mixture for producing casting molds for metal processing, a process for producing casting molds, casting molds which can be obtained by the process and their use. The production of the casting molds is carried out using a refractory base molding material and a binder based on water glass. A proportion of a particulate metal oxide selected from the group consisting of silicon dioxide, aluminium oxide, titanium oxide and zinc oxide is added to the binder, with particular preference being given to using synthetic amorphous silicon dioxide. The mold material mixture contains a surface-active material as further significant constituent. The addition of the surface-active material enables the flowability of the mold material mixture to be improved, which makes it possible to produce casting molds having a very complicated geometry.

Mould material mixture having improved flowability

The invention relates to molding material mixtures containing barium sulfate in combination with refractory basic molding materials and a waterglass-based binder system for producing casting molds and cores for the foundry industry in order to obtain cast pieces, in particular aluminum ones, which have an improved cast surface.

Molding material mixtures containing barium sulfate

The invention relates to mold material mixtures for producing molds and cores for metal casting, consisting of at least one refractory material, a binder based on resols and amorphous silicon dioxide. The invention also relates to a multicomponent system and methods for producing molds and cores using the mold material mixtures as well as molds and cores for metal casting produced according to this method.

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Leichlingen, Germany

Jörg Körschgen