Using thin, wide ingate and chill can prevent the shrinkage defect, and improve casting yield by 3%.
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%；
The numerical simulation of temperature field and shrinkage defect prediction for a valve casting, which was involved in 4 kinds of casting proces.
对采用4种不同铸造工艺方案的阀体铸件凝固过程进行了数值模拟及缺陷预测，获得了与试验相一致的模拟结果。
The reason causing shrinkage defect was analyzed, and the following measure was adopted: setting chills on both the top and bottom surfaces of the casting.
对引起缩松的原因进行了分析，并采取了相应的工艺措施，上下底面同时加冷铁，消除了缩松缺陷。
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