By comparison of five kinds of riser, the paper recomends the casting process design of side-blind riser which can assure the casting quality and reduce the casting cost.
比较五种冒口工艺方案，采用边暗冒口工艺生产球铁件转动环，提高了铸件质量和经济效益。
By comparison of five kinds of riser, the paper recomends the casting process design of side-blind riser which can assure the casting quality and reduce the casting cost.
比较五种冒口工艺方案，采用边暗冒口工艺生产球铁件转动环，提高了铸件质量和经济效益。
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