硅溶胶型壳的面层和背层对硅溶胶和耐火粉料的要求是不一样的。
The requirements for silica sol and refractory powder for mold shell in face layer differ from that in back layer.
探讨硅溶胶型壳制壳工艺中几个主要问题，以求提高工艺技术水平和铸件质量。
Several important problems related to ceramic shell used silica sol as binder were studied in order to raise technical level of the shell making and improve quality of the castings.
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。
Calculation method of cost and price of investment castings was given based on analysis of sol silicate mold shell investment casting process.
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