Method and device for conditioning the coating of a paper machin

Details Method and device for conditioning the coating of a paper machin Method and device for conditioning the coating of a paper machin

1994-08-30

1997-01-28

Czaja, Donald E.

Paper making and fiber liberation

Processes and products

Conditioning, preparing or repairing of apparatus

162272, 162274, 162276, 451 49, 451424, D21F 132, B24B 100

Patent

active

055974490

ABSTRACT:
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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patent: 5104697 (1992-04-01), Heikkinen et al.
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Tekniikan Kasikirja (Reference Book of Engineering), No. 9, p. 372, Table 2 and p. 373, column 2, second paragraph.

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