Method for marking a cylindrical metal object, such as a roll of a rolling mill.

摘要

The roll (2) is arranged in such a way that its axis is perpendicular to that of the laser beam (1), which is stationary. The roll is displaced along its longitudinal axis at the same time as being rotated about this axis. The disadvantages which are inherent in the methods employing a movable marking head, arising from faults in the marking head and from the variation in the length of the laser beam, are thus avoided. <IMAGE>