The requirements for silica sol and refractory powder for mold shell in face layer differ from that in back layer.
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。
It is simple process, less pollution, low cost, good quality casting, and can meet producing of locomotive casting, that the investment pattern was made from the shell mold was made from silica sol.
采用硅溶胶粘结剂制造型壳，工艺简单，污染少，成本低，铸件质量好，满足机车类精铸件生产要求。
It is simple process, less pollution, low cost, good quality casting, and can meet producing of locomotive casting, that the investment pattern was made from the shell mold was made from silica sol.
采用硅溶胶粘结剂制造型壳，工艺简单，污染少，成本低，铸件质量好，满足机车类精铸件生产要求。
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