Inorganic foundry binder systems and their uses

Details Inorganic foundry binder systems and their uses Inorganic foundry binder systems and their uses

B - Operations, Transporting

22

C

B22C 1/18 (2006.01) B22D 19/00 (2006.01)

Patent

CA 2122619

This invention relates to inorganic no-bake foundry binder systems and their uses. The binder systems comprise as separate Part A and Part B components: (A) an aqeuous solution of specified phosphoric acids, and (B) a mixture comprising (1) a iron oxide selected from the group consisting of (a) ferrous oxide, (b) ferroferric oxide, and (c) mixtures thereof and (2) magnesium oxide. The binder systems are used to prepare foundry mixes which are used to prepare foundry molds and cores. The foundry molds and cores are used to cast metals.

Cette invention concerne des systèmes de liants inorganique de fonderie sans cuisson et leurs utilisations. Les systèmes de liants comprennent des constituants A et B séparés: (A) une solution aqueuse d'acides phosphoriques spécifiés, et (B) un mélange comprenant (1) un oxyde de fer choisi dans le groupe constitué par (a) de l'oxyde ferreux, (b) de l'oxyde ferroférique, et (c) des mélanges de ceux-ci, et (2) de l'oxyde de magnésium. On utilise les systèmes de liants pour préparer des mélanges de fonderie employés dans la préparation de moules et de noyaux de fonderie. On utilise les moules et les noyaux de fonderie pour couler des métaux.

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