**4. Conclusions**

The composition of mold material for small castings requires the ability to withstand an appropriate compressive strength and thermal stability particularly when they are made by the centrifugal casting process. The literature also infers that under this circumstance, the composition of mold material should be α-hemihydrate, colloidal silica and water. Based on current work, the following specific conclusions can be derived.


*Proceedings of the 4th International Conference on Innovations in Automation...* 
