For most foundrymen, the term “cold box” means a phenolic urethane cured by an amine gas, which are used in most high-production coremaking systems. Cold box as a classification, however, also includes some less widely used technologies like epoxy/acrylics cured with sulfur dioxide and alkaline phenolics cured with methyl formate. While effective in their operation, they use a hazardous curing agent. The more environmentally friendly, carbon dioxide (CO2) cured binder systems, ...

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