Modeling of laser processing as a distortion compensation strategy for profile grinding

In this paper, the possibility of using laser machining on long slim steel workpieces, such as linear guide rails, was investigated to selectively induce tensile residual stresses. The approach will be used to counteract the residual stresses in a V-groove after profile grinding and to compensate for workpiece distortion. Experimental data with a variation of laser power and feed rate were used to calibrate a finite element simulation so that a valid predictive model could be built. Decisive factors were the distortion values as well as metallographic investigations. Relevant results are the numerical design of suitable strategies for targeted distortion potential induction and an advanced understanding of thermal treatment by laser processing. The completed successful modeling of the process strategy can be used for distortion compensation during profile grinding.