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低压涡轮叶片定向凝固铸件质量受多种因素的制约，本文叙述了型壳制造、熔铸工艺对定向凝固涡轮叶片质量的影响，介绍了适合ＤＺ４合金定向凝固叶片的工艺规程及质量控制。
The quality of low-pressure turbine blade directional solidification castings is restricted by many factors. This paper describes the effect of shell manufacturing and casting process on the quality of directional solidification turbine blades. The technological rules and quality control for directional solidification of DZ4 alloy blades are introduced.