Method for making guide vane inner ring by opening process window

The invention relates to the technical field of precision casting, in particular to a method for making a guide vane inner ring by opening a process window. The method comprises the following steps of: designing a computer model of the guide vane inner ring by a UG solid modeling method; firing with...

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Bibliographic Details
Main Authors PAN BOTAO, CHEN ZHEN, FEI JING, FENG WENGANG, WANG TIEJUN
Format Patent
LanguageChinese
English
Published 06.06.2012
Subjects
CASTING
FOUNDRY MOULDING
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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Summary:The invention relates to the technical field of precision casting, in particular to a method for making a guide vane inner ring by opening a process window. The method comprises the following steps of: designing a computer model of the guide vane inner ring by a UG solid modeling method; firing with a laser rapid forming machine; performing combination, sticking and wax-welding on a fixture with a fixing tenon; performing size detection and local trimming on the wax piece to finish the manufacturing of a wax mould; assembling the wax mould into a pouring system; smearing a mixed coating consisting of silica sol and fused corundum on the surface of the wax mould; dewaxing and sintering to obtain a shell of the pouring system; pouring on a vacuum furnace to obtain an integral mother castingof the guide vane inner ring; opening 14 process windows in 15 mm*20 mm on the annular thin wall of the integral mother casting of the guide vane inner ring; welding 15 through holes of the outer ring and 35 nozzle holes of t
Bibliography:Application Number: CN20101614718