In order to produce heavy sectioned ductile iron working table by non riser casting process,the mould with sand coated chill and graphite chill and clay cores are used.

• 为实现厚大断面大型球铁实体花盘无冒口铸造，采取挂砂冷铁与石墨冷铁组成的型芯强制冷却；