Preparation process of high-temperature alloy multigang hollow turbine blade
A high-temperature alloy and turbine blade technology, which is applied in the field of precision casting, can solve the problems of difficulty in preparing wax patterns, low success rate of wax patterns, and fractures, and achieve the effects of avoiding incomplete strict consistency, improving success rate, and simplifying the manufacturing process
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Embodiment 1
[0022] The ceramic core adopts a silica-based ceramic core, and the wax mold of each unit airfoil (with ceramic core) is formed by injection molding. The injection temperature is 65°C, the pressure is 0.5MPa, the injection time is 20 seconds, and the pressure holding time 10 seconds; put the wax molds of each blade unit blade body (with ceramic core) into the multi-unit wax mold mold for integral molding to make a multi-unit wax mold mold; paint the multi-unit wax mold mold to make a shell The surface coating is made of corundum powder (320 mesh) and silica sol, and the mass ratio of corundum powder to silica sol is 3.5:1; the first layer of sanding material is 80 mesh corundum sand, and the second layer is 60 mesh corundum sand , the third layer is 32-mesh corundum sand, the fourth-seventh layer is 24-mesh corundum sand, and the final sealant layer is made of surface coating; the wax mold is removed by steam method, the steam temperature is 150 ° C, and the time is 30 minutes;...
Embodiment 2
[0024] The ceramic core adopts a silica-based ceramic core, and the wax mold of each unit airfoil (with ceramic core) is formed by injection molding. The injection temperature is 65°C, the pressure is 0.5MPa, the injection time is 10 seconds, and the pressure holding time 30 seconds; put the wax molds of each blade unit blade body (with ceramic core) into the multi-unit wax mold mold for integral molding to make a multi-unit wax mold mold; paint the multi-unit wax mold mold to make a shell , the surface coating uses corundum powder (320 mesh) and silica sol solution, the mass ratio of corundum powder to silica sol solution is 3.3:1; the first layer of sanding material is 80 mesh corundum sand, and the second layer is 60 mesh corundum sand. The third layer is 32-mesh corundum sand, the fourth-seventh layer is 24-mesh corundum sand, and the final sealant layer is made of surface coating; the wax mold is removed by steam method, the steam temperature is 120°C, and the time is 30 m...
Embodiment 3
[0026] The ceramic core adopts aluminum oxide-based ceramic core, and the wax molds of each unit blade (with ceramic core) are formed by injection molding. The injection temperature is 68°C, the pressure is 0.4MPa, and the injection time is 20 seconds. The time is 20 seconds; put the wax molds of each blade unit blade body (with ceramic core) into the multi-unit wax mold mold for integral molding to make a multi-unit wax mold mold; paint the multi-unit wax mold mold Shell and surface coatings are made of corundum powder (320 mesh) and silica sol solution, the mass ratio of corundum powder to silica sol solution is 3.0-3.5:1; the first layer of sanding material is 80 mesh corundum sand; the second layer is 60 mesh mesh corundum sand, the third layer is 32 mesh corundum sand, the fourth-seventh layer is 24 mesh corundum sand, and the final sealant layer is made of surface coating; the wax mold is removed by steam method, the steam temperature is 150 ℃, and the time is 20 minutes...
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