The process of shell type steel filling (dry sand) is to put the shell type into the barrel and fill the steel balls (dry sand) around the barrel to reinforce the shell

A casting process in which a mold is formed and a molten iron is cast. Castings are cooled by steel pellets, the faster the cooling speed, the better the air permeability, the better the recovery of steel pellets, the smaller the equipment investment, the slower the die consumption, and the easier the mold change.