Precision casting method for engine vanes
An engine blade, precision casting technology, applied in casting and forming equipment and other directions, can solve the problems of many surface and internal defects of parts, insufficient casting process parameters, unreasonable design, etc., and achieve internal defect elimination, good elimination rate, and uniform internal structure. stable effect
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Embodiment 1
[0025] Including mold design, mold manufacturing, raw material smelting, blanking preparation, centrifugal casting, first cooling, second forming, second cooling, trimming and sandblasting, hot isostatic pressing steps;
[0026] The steps of the mold design are: using a water-soluble core, using the existing CAD system to design the CAD model of the engine blade, using a rapid prototyping machine, and using the existing laser sintering to sinter the polystyrene powder with a diameter of less than 0.2mm layer by layer , and then soaked in wax to make a investment pattern, and then clean the surface and interior of the investment pattern;
[0027] The steps of mold manufacturing are as follows: immerse the investment pattern in the surface coating and dip it in the slurry for 35 seconds, then take it out, then sand and dry the surface layer to obtain a mold shell, put the mold shell into a heating furnace, and heat it at a temperature of 380 Keep warm at ℃ for 2.8h, then continu...
Embodiment 2
[0037] Including mold design, mold manufacturing, raw material smelting, blanking preparation, centrifugal casting, first cooling, second forming, second cooling, trimming and sandblasting, hot isostatic pressing steps;
[0038] The steps of the mold design are: using a water-soluble core, using the existing CAD system to design the CAD model of the engine blade, using a rapid prototyping machine, and using the existing laser sintering to sinter the polystyrene powder with a diameter of less than 0.2mm layer by layer , and then soaked in wax to make a investment pattern, and then clean the surface and interior of the investment pattern;
[0039] The manufacturing steps of the mold are as follows: immerse the investment pattern in the surface coating and dip it in the slurry for 30-45 seconds, then take it out, then sand and dry the surface layer to obtain a mold shell, put the mold shell into a heating furnace, and heat the mold shell at a temperature of Keep warm at 350-480°C...
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