PROCESS FOR PRODUCING FOUNDRY EXOTHERMIC BODY

摘要

A process for producing a foundry exothermic body such as an foundry exothermic riser sleeve includes the steps of preparing a raw material mixture whose components include one or more powdered/granular refractories, one or more powdered/granular exothermic materials, one or more powdered/granular oxidants and one or more powdered pro-oxidants, mixing thermosetting phenol resin with the raw material mixture to coat grain surfaces of the raw material mixture with thermosetting phenol resin and obtain a thermosetting phenol resin coated raw material mixture, and using the shell molding process to form and cure the thermosetting phenol resin coated raw material mixture into a foundry exothermic body of prescribed shape.