Systematic analysis of the correlation between part geometry and distortion due to heat treatment

Part distortion occurring during hardening combined with narrow tolerances often requires post heat treatment machining. Since corrective machining is expensive, distortion must be kept as low as possible. The current work demonstrates the relevance of the pan geometry for distortion. First of all, the physical effects that make the part geometry a significant carrier of distortion potential are outlined. Secondly, the degree to which the part geometry can influence distortion is illustrated on a complex automotive part. Finally, a method is presented that helps to identify the design features of a part that are responsible for crucial deformations following heat treatment.