| 摘要 |
<p>The invention relates to a method of drilling holes to the surface of a dryer cylinder (1) in a paper machine, whereby the drilling operation is performed onsite without dismantling the cylinder from the paper machine. Such a dryer cylinder comprising a shell (2), a cavity (3) enclosed by the shell and grooves (5) made to the outer surface (4) of the shell. The main goal of the method according to the invention is to open and/or widen the drilled holes (7) already made on the dryer cylinder of a paper machine, thus improving the performance of the cylinder. The method according to the invention may also be employed for making an entirely new drilling pattern (7, 7') on the dryer cylinder.</p> |
