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- W2987255763 abstract "The process analysis of manufacturing the castings of turbine moving blades demonstrated that approximately 5% of the blade blanks from a lot are rejected to a considerable geometric distortion of the blade airfoil. The turbine moving blade casting manufactured by the casting method with directed crystallizing may differ in its geometric and dimensional-accuracy parameters from the design model. The casting geometry varies as a result of high temperature and structural shrinkage deformations which are manifested as the hindered volumetric shrinkage and contraction during crystallizing and upon the casting knockout from the ceramic mould. High-temperature deformations may result in contraction of the casting mould and ceramic core shaping the inner blade cooling channels. As a result, to obtain the blade of the geometric form as set by the designer, it becomes necessary to predict the stress-deformed state of the moving blade casting in order to consider the volumetric shrinkage and deformation in advance. Therefore, predicting and considering the total volumetric shrinkage during the manufacture of the moving blade castings ensuring the minimum contraction of the process system “ceramic mould – casting – ceramic core” is a relevant problem for the modern blank production." @default.
- W2987255763 created "2019-11-22" @default.
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- W2987255763 date "2019-01-01" @default.
- W2987255763 modified "2023-09-26" @default.
- W2987255763 title "Predicting the volume shrinkage while manufacturing the GTE turbine blades" @default.
- W2987255763 cites W2028927391 @default.
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- W2987255763 doi "https://doi.org/10.1051/matecconf/201929800144" @default.
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