New type mould structure and processing parameters for harrow piece of nodular cast iron in squeezing casting and its application were discribed.Cooling water way and overflow way for liquid Fe in the mould are designed.To cast a through\|hole on the harrow piece

two float core are respectively set on the punch and the container.Experiments indicates that the harrow piece of nodular cast iron in squeezing casting has the features of excellent mechanical properties and low production cost.