Fillet radius should be 40-60% of the rib thickness.

加强筋与壁之间的倒圆角取加强筋厚度的40 - 60%。

Drag onto the page. Right-click to edit fillet radius.

拖到绘图页上。右击可编辑圆角半径。

The results have shown that the larger of the fillet radius, the fewer of the surface defect and entrapped air.

研究表明：随着传输管道转角处过渡圆弧半径的增大，所产生的氧化膜与卷气逐渐减少；

Avoid the quick changes of casting structure, use fillet radius on internal Angle when possible, which is no less than R0.3.

铸件结构应避免急剧变化，尽可能避免尖角，圆角应达到R0.3以上。

Die structure based on the process of forming small fillet radius is introduced, and deduced the formula according to the principle of volume invariably.

介绍形成小圆角半径的圆孔翻边模具的结构特点，按体积不变的原则，推导了计算公式。