This article presents a study of the technology of virtual mold-repair for the optimal design of the mold cavity of a hollow turbine blade to precisely control its shape. The casting process of the hollow turbine blade is simulated by means of the software ProCAST, and the displacement field of the blade is calculated with a finite element model, based on which the mold cavity is optimized by the anti-deformation virtual mold-repair method. As testified by a simulation of the revised mold cavity and identified by a mold cavity model, satisfactory results of mold repair are achieved by this method. The average of the error of products, which are processed by the mould after repairing, reduced greatly, the products passing rate increased by 20%. Compared with the results of mold-repair by a solid mold, the accuracy and reliability of mold-repair by this method are effectively improved.
BU Kun, WANG Hong, ZHOU Tong, LI Shifeng, SHEN Xianghong
. Method of Virtual Mold-repair for Hollow Turbine Blades[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011
, 32(3)
: 538
-545
.
DOI: CNKI:11-1929/V.20101228.1333.000
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