It is feasible to forecast the casting UTS by measuring DAS, but the effect of hole ratio on UTS should not be neglected.

通过测定二次枝晶间距来预测铸件的抗拉性能是可行的，但是孔洞率对抗拉强度的影响不可忽视。

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So often easily design overflow and air vent at inappropriate location, making casting generated gas hole.

所以常常容易因为溢流井与逃气道位置设计不当，使得铸件产生气孔的缺陷。

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The large, complex and irregular investment casting mold was successfully designed by property arrange technology hole for core cleaning and use combinative core.

通过开设适当的出芯工艺孔，利用组合型芯，成功地设计出了大型、复杂、不规则熔模铸件模具。

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