Keystone’s core making capabilities include both shell and cold cure processes. Shell cores are baked at 400° F and the cold cure process uses CO2 to cure the cores. Shell core boxes are typically made from ductile iron or steel and CO2 boxes can be metal or plastic. Shell cores are used for medium to high volume jobs where CO2 cores are normally used for low volume jobs. After the cores are produce they are cleaned to remove any flash and then stored until needed.
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