The technology of grinding ball by centrifugal casting, the rotational speed, the method for calculation of ingate area and factors influencing technological process were introduced.
介绍了离心铸造磨球的工艺，以及转速、内浇口断面积计算方法和影响工艺过程的因素。
2
The practical structure of die casting mould with the rotational automatic thread demoulding for shell parts, the calculation of mode locking force and the process parameters were presented.
给出了罩壳零件旋转自动脱螺纹压铸模实用结构，锁模力计算和工艺参数，论述了模具工作原理和设计要点。
3
It is suggested to apply the principle of effective gravity and equivalent pressure head to calculate the rotational speed and ingate area in the processing of grinding ball by centrifugal casting.