foundry sand for cold box process

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foundry sand for cold box process

Product Description

Foundry sand for cold box process refers to a specific type of foundry sand used in the cold box core making process. The cold box process is a thermosetting resin-based method commonly employed in metal casting to produce high-quality cores.
In the cold box process, a two-part resin system is used to bind the sand particles together. The resin consists of a phenolic resin and an isocyanate. The sand mixed with the resin is blown into a core box and quickly hardened by the gaseous catalyst released from the reaction of the resin components. This forms a strong and dimensionally stable core that can withstand the pouring of molten metal during casting.
The foundry sand for cold box process needs to meet specific requirements. It should have a uniformly sized grain distribution, high refractoriness, low volatile content, and good flowability to ensure proper mixing with the resin system. Additionally, the sand should have good collapsibility to allow easy removal of the core from the mold after casting.
The use of foundry sand for cold box process offers advantages such as high dimensional accuracy, excellent surface finish, good core strength, and reduced gas emission during casting. These characteristics make it suitable for producing intricate and complex castings used in industries such as automotive, aerospace, and machinery manufacturing.

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