在呋喃树脂砂型条件下，针对不同模数、不同冒口颈尺寸的圆柱试样进行了模拟计算和浇注试验。

Several cylindrical castings with different modulus and size of riser necks cast in furan bonded silicon sand molds are examined and analyzed numerically.

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根据数值模拟结果并结合理论分析，通过加大冒口颈与冷铁的尺寸和增设冒口方法，对铸造工艺进行优化。

According to the results and combining with theoretical analysis, the casting process was improved by increasing the size of riser neck and chills and adding the number of the riser.

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