The C-bearing cap casting of a gas turbine is one of the important ductile iron parts newly developed,which has large wall thickness differences,high non-destructive testing requirements,complex processing and difficult casting.The selection of the casting process scheme and the problems encoun-tered in the production process of the first article and the countermeasures taken were introduced,and the quality problems were finally solved,and the R&D and delivery of the casting were completed.
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