Moulding mixture for producing casting moulds for metal working

Details Moulding mixture for producing casting moulds for metal working Moulding mixture for producing casting moulds for metal working

B - Operations, Transporting

22

C

B22C 1/18 (2006.01)

Patent

CA 2578437

The invention relates to a material mixture for producing casting moulds for machining metal, to a method for producing casting moulds, and to a method which produces said casting moulds and to the use thereof. A fire-resistant moulding base material and a binding agent based on water glass is used in the production of casting moulds. A proportion of the particle-shaped metal oxide is added to the binding agent, said metal oxide being selected from the group of silicon dioxide, aluminium oxide, titanium oxide and zinc oxide. Synthetic amorphous silicon dioxide is preferably used as a metal oxide.

L'invention concerne un mélange de matières de moulage pour produire des moules pour le travail des métaux, ainsi qu'un procédé permettant de produire des moules, les moules obtenus au moyen dudit procédé et leur utilisation. Pour produire les moules, il est prévu d'utiliser une matière de base de moulage, ainsi qu'un liant à base de verre soluble. Une proportion d'un oxyde de métal particulaire est ajoutée au liant, ledit oxyde de métal étant sélectionné dans le groupe comprenant le dioxyde de silicium, l'oxyde d'aluminium, l'oxyde de titane et l'oxyde de zinc. Le dioxyde de silicium amorphe synthétique est tout particulièrement utilisé comme oxyde de métal.

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