THE DYNAMICS OF THE SURFACE-LAYER PROPERT Y MODIFICATIONS INDUCED BY ROLL GRINDING

This study shows that it is possible to carry out the grinding of roll ing rolls in such a way that the surface layer gets superior service p roperties. A thermal calculation is used to relate the temperature dis tribution in the work piece to the grinding conditions. The microstruc tures resulting from such thermal cycles have been studied in the case of an 83CrMoV9 steel and the microhardness gradients determined. The final properties of the surface layer are influenced by the whole hist ory of grinding and not only the last pass.