Process for casting ball iron flywheel by iron model sand covering
A technology for sand-covered casting and sand-covered molding of iron molds, which is applied to manufacturing tools, casting molding equipment, casting molds, etc. The effect of mass production and improving process yield
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[0011] Below in conjunction with accompanying drawing, the present invention will be further described: figure 1 As shown, the process flow of the present invention is iron mold, mold clamping → sand-covered molding → solidification → mold lifting → box closing, stack gate → molten iron smelting, treatment → pouring → cooling → mold opening → casting, casting mold clean up.
[0012] The sand-covered molding process is characterized in that the temperature of the iron mold is controlled at 210°C to 230°C; the sand shooting uses 0.4MPa compressed air to blow the fluid coated sand into the mold cavity, and the sand shooting time is 1 to 2s.
[0013] The smelting and processing of the molten iron is characterized in that the molten iron is smelted using an intermediate frequency induction furnace, and the furnace temperature is 1520-1550°C; the molten iron needs to be inoculated twice: 0.2% ~0.3% FeSi75; add 0.1% FeSi75 during pouring for the second time for inoculation with flo...
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