Casting molding sand adhesive for improving flowability

Abstract

The invention relates to the field of casting, and in particular relates to a casting molding sand adhesive for improving the flowability. The casting molding sand adhesive is characterized by consisting of the following raw materials in parts by weight: 80-90 parts of clay, 5-7 parts of metal oxide, 100-110 parts of water and 10-15 parts of modified mixed plant oil. According to the casting molding sand adhesive, the added mixed metal oxide can improve the hygroscopicity resistance and the storage stability of a sand mold subjected to hot air solidification; the modified mixed plant oil and substances such as silicon and aluminum in the clay are fully mixed, so that the problem of low flowability of the clay can be well solved; the flowability of the adhesive is improved; and furthermore, only a small amount of plant oil is added, so that the production cost is lower.

Description

Technical field: [0001] The invention relates to the casting field, in particular to a casting sand binder with increased fluidity. Background technique: [0002] At present, the binders used for modeling and core making in foundry production are mainly divided into two categories: organic and inorganic. Organic binders (ie, organic resins) have high bonding strength, and the curing agent is liquid, which is convenient for automatic quantitative production. There is no dust pollution, but the organic resin sand produces toxic gases during the pouring process, such as dioxin, ammonia, sulfur dioxide, etc., causing serious environmental pollution and high cost. Inorganic binders meet the environment-friendly requirements proposed by the Party Central Committee. At present, clay and water glass are mostly used in production. Clay sand (mostly wet type) is generally used for modeling, and its fluidity is not high for core making. , cannot produce castings with more complex shap...

AI Technical Summary

Problems solved by technology

[0002] At present, the binders used for modeling and core making in foundry production are mainly divided into two categories: organic and inorganic. Organic binders (ie, organic resins) have high bonding strength, and the curing agent is liquid, which is convenient for automatic quantitative production. Does not produce dust pollution, but the organic resin sand produces toxic gases during the pouring process, such as dioxin, ammonia, sulfur dioxide, etc., causing serious environmental pollution and high cost

Inorganic binders meet the environment-friendly requirements proposed by the Party Central Committee. At present, clay and water glass are mostly used in production. Clay sand (mostly wet type) is generally used for modeling, and its fluidity is not high for core making. , cannot produce castings with complex shapes