Residual stresses have a wide range of causes. These include, for example, inhomogeneous heat dissipation, heat treatment, grinding, grit blasting, nitriding or polishing.

On site, we measure the residual stresses for you using the hole-drilling method. The evaluation – and hence the determination – of the residual stresses is performed both according to ASTM E 837 (by means of which an “average” residual stress is determined over the entire depth of the drill hole) and in accordance with “Kockelmann”, where the residual stress distribution is determined down to a drilling depth of one millimeter. These services are rounded off by investigations into the causes and proposed measures.