Reducing distortion due to heat treatment by modifying part geometry

摘要

Distortion occurring during heat treatment combined with narrow tolerances often requires post-heat treatment machining. Since corrective machining is expensive, distortion must be kept as low as possible. The present work demonstrates the relevance of the part geometry for distortion. First of all, the physical effects that make the part geometry a significant carrier of distortion potential are outlined. Second, the degree to which the part geometry can influence distortion is illustrated on a complex automotive part. Finally, a new approach is presented to better control systematic distortion.