1, ceramic shell mould law with silica gel solution as binder, mixed refractory powder filler and promoting agent, the gel into slurry.Will be sufficient liquidity of slurry water the cover on the model surface, slurry condensation, after demoulding, with 700 ℃ dehydration, drying, with 1000 ℃ sintering in order to improve the strength, make ceramic shell mold.The thickness of the ceramic shell mold for 3 ~ 20 mm, pouring large castings, it must be on the back pad, to support materials to the weight of the bearing body of the molten metal. Second, adjust the weight percentage of filler and binder, controllable pulping of liquidity, strength and permeability of the ceramic shell mold.Filler usage of the bubble into the volume of slurry to knot agent volume of 1.5 ~ 2.5 times.A, ceramic shell mould law with silica gel solution as binder, mixed refractory powder filler and promoting agent, the gel into slurry.Will be sufficient liquidity of slurry water the cover on the model surface, slurry condensation, after demoulding, with 700 ℃ dehydration, drying, with 1000 ℃ sintering in order to improve the strength, make ceramic shell mold.The thickness of the ceramic shell mold for 3 ~ 20 mm, pouring large castings, it must be on the back pad, to support materials to the weight of the bearing body of the molten metal. Second, adjust the weight percentage of filler and binder, controllable pulping of liquidity, strength and permeability of the ceramic shell mold.Filler usage of the bubble into the volume of slurry to knot agent volume of 1.5 ~ 2.5 times.
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