Method for making recesses in a rolling roller

A method of introducing desired recesses into a surface of a rolling roller for a high-pressure rolling press for comminuting brittle material to be ground, comprising:

• installing the rolling roller in the high-pressure rolling press in an untreated state and with a cylindrical, smooth surface,
• thereafter, thermally treating limited portions of the cylindrical roller surface, by heating the roller surface only in a region of the desired recesses until the material properties of the roller surface change permanently, with respect to the hardness of the roller material,
• applying a deposition weld only in the region of the desired recesses, said deposition weld being made of a material which is softer than a material of the surface of the rolling roller,
• wearing down the deposition weld and roller surface regions of the desired recesses of the rolling roller which are changed after thermal treatment, by putting the rolling roller into operation to comminute brittle material without first removing the regions of the surface that have been thermally treated.