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。

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Calculation method of cost and price of investment castings was given based on analysis of sol silicate mold shell investment casting process.

以硅溶胶型壳熔模精密铸造的工艺过程分析为基础，提出了铸件成本和价格的计算方法。

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A process chart for quick casting based on this method was presented, and a metal part was produced.

本文给出了由此方法实现快速铸造的工艺方案，并进一步实现了金属零件的快速铸造。

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