Coating a Color Image on a Silver Ring With a Diode Laser (Endurance 10 Watt DPSS Laser Nd: YAG, 1064 Nm, F = 20mm).Laser Nd: YAG, 1064 Nm, F = 20mm).

A task:

Create a color image on the silver surface without the use of dyes. As in previous works, the "tarnishing effect" is involved, which allows you to obtain a color image on various metals.

The flat part of the ring should be sanded to a mirror finish. The surface should be as flat and smooth as possible. The ring is fixed on the desktop of the laser machine, as shown in the photo.

The drawing "Eye of Horus" was taken as a basis. The entire image is applied in one pass. The size of the image is selected in accordance with the processed surface of the ring.

In the LidhtBurn program, select the following mode: speed 700 mm / min., Power 10% (a color image is obtained in the power range of 6% -17%. The color of the image depends on this parameter), an interval of 0.05 mm. Important - the distance from the laser lens to the treated surface is 17.6 mm. If you deviate from this value, the image will not acquire color.

After engraving the surface of the silver ring in a given mode, it was possible to obtain a color image. But there is one caveat - the image is unstable and is erased even with a light touch of a finger. Work is underway on this problem, and a solution will certainly be found.