Laser univariate color marking system and method

Abstract

The invention discloses a laser univariable color marking method. The method comprises the steps that (1), the marking position of a laser is adjusted; (2), marking parameters of the laser are set; (3), marking areas of marking patterns are selected; (4) the marking speed in the marking areas is preset; (5) the laser is started to form an oxidation film in the areas to be marked at the preset marking speed; (6) marking is repeated until all the marking areas are marked. According to the laser univariable color marking system and method, different colors can be obtained under the situation of setting the same marking parameters by changing the marking speed, colors needed at all positions with patterns to be printed are determined according to preset color combined patterns to be printed, and therefore the printing speed is determined; the marking speed is higher, the color repeatability is good, and the multi-color patterns are integrally formed; the purpose of multi-color combined marking is achieved. The marking effect of the color combined patterns is achieved, the colorful patterns are obtained, and the colorful marking is more flexible and creative.

Description

technical field [0001] The invention relates to the field of laser processing, in particular to a laser single-variable color marking system and method. Background technique [0002] The color of metal marking is due to the control of laser heat input during the laser marking process to form oxide films of different thicknesses on the metal surface. The optical interference phenomenon of the oxide film makes the surface color, and the metal oxide film will appear on the metal surface. The interference phenomenon of light is formed, and the thickness of the two films determines the color change. It is generally believed that the thickness of the film where the color change can be seen should be between tens of nanometers and 2 microns. The difference between the laser marking method and other methods is that the color can be processed in the designated area on the surface of the metal under normal circumstances, and rich and colorful patterns can be obtained through appropri...

AI Technical Summary

Problems solved by technology

When we need a variety of color combinations, we need multiple power parameters, which has certain requirements for the performance of the laser, that is, the output power of the laser needs to be controlled by software, which limits some lasers that cannot be controlled externally.

Images