| 摘要 |
A method and device for conditioning a ceramic or metal-ceramic coating of a paper machine roll at its operating site. The roll is ground periodically by a grinding member mounted on a doctor of the roll. The grain size of the grinding particles in the grinding member, i.e., the average diameter of the particles, is in the range of from about 15 to about 200 mu m. In the grinding situation, the roll is rotated in its site of operation, and the grinding member is pressed with a force into contact with the face to be ground, whereby, if the face to be ground is excessively rough, it is smoothed to the desired value of surface roughness and, in a corresponding manner, an excessively smooth face is roughened to the desired surface roughness value determined by the grinding member.
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