Flexible and Abrasion-proof
In tool- and moldmaking the preferred marking methods are annealing and engraving. Annealing is used with all metals which show a color change when exposed to heat and oxygen. The laser marker selectively heats up small spots of the workpiece surface until annealing colors appear. Annealing leaves the material surface unharmed but still produces high-contrast, clearly legible markings.
The laser marker engraves the material surface down to some 10 µm in depth. Engraved marks are exceptionally durable and can only be removed by heavy grinding. Therefore engraving is used for forgery-proof product marking e.g. of ball-bearings. Both marking methods offer almost unlimited possibilities in terms of marking contents and shape and are suitable for small and large batch sizes.