An important step in turbine repair is the re-contouring process as it determines part and surface properties. Re-contouring is performed subsequently to the material deposit and has to be adapted to each repair case individually. Especially, part distortion is a crucial aspect in terms of quality and has to be considered in process design.

This paper introduces a novel method for evaluation of re-contouring processes regarding part quality and, especially, part distortion. For this purpose, a simulation model for calculating local cutting conditions is introduced and validated experimentally. The validation is carried out for a thin-walled analogue part. The results reveal a clear dependency between the absolute part distortion and the surface generating cut volume (SGCV).

涡轮机维修的重要步骤是重新轮廓加工，因为它决定了零件和表面的特性。重新轮廓是在物料沉积之后执行的，必须分别适应每个维修案例。特别是，零件变形在质量方面是至关重要的方面，必须在工艺设计中加以考虑。

本文介绍了一种新颖的方法来评估零件质量，尤其是零件变形的重塑过程。为此，引入了用于计算局部切削条件的仿真模型，并进行了实验验证。验证是针对薄壁模拟零件进行的。结果表明，绝对零件变形与表面生成切削量（SGCV）之间存在明显的依存关系。