Using thin, wide ingate and chill can prevent the shrinkage defect, and improve casting yield by 3%. The design of running system according to Large Orifice Discharge was used in practice.

• 采用薄、宽的内浇道和冷铁工艺消除了飞轮铸件的缩孔缺陷,铸造工艺出品率提高3%25;根据大孔出流理论设计的浇注系统符合实际生产。