Binders and moulding material

Foseco offer a broad range of organic and inorganic mould and core binder systems. Organic binders are almost exclusively synthetic resins, which are cured by the addition of a separate hardener or catalyst. Inorganic or silicate binders are based on sodium silicates that have been optimised to accommodate the varying casting processes, thus guaranteeing best performance.

Foseco's ESHANOL and FUROTEC furane acid-set binder systems for sand cores and molds in foundries.
In the self-hardening process clean, dry sand is mixed with binder and catalyst, usually in a continuous mixer. Speed of setting is controlled by the type and addition rate of the catalyst used. Self-setting binders provide superior mould break-down after casting and excellent casting surface finish.
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Driven by increasing health and safety guidelines and even more stringent environmental legislation, the sodium silicate method in combination with liquid hardeners has enjoyed a recent resurgence in popularity in steel, iron and non ferrous foundries.
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Foseco's gas-setting binder systems for sand cores and molds, including CARSIL, SOLOSIL, ECOLOTEC, and POLITEC, designed to enhance casting quality and environmental performance
Cores for repetition foundries are usually made using a triggered hardening system with the mixed sand being blown into the core box. Gas cured binder systems often allow very fast curing, even of thick section cores.
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Foseco's FOSHELL resin is a heat-setting phenolic binder used in the shell process for producing resin-coated sand molds and cores.
The shell process was one of the first synthetic resin foundry processes to be developed. Although it is slow and rather expensive, it is still widely used, because of the excellent surface finish and dimensional accuracy of the castings produced.
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