Research on the Quality of Laser Marked Data Matrix Symbols

Abstract

To evaluate the quality of the laser direct part marked Data Matrix symbols on titanium alloy substrates, the quality assessment methods at home and abroad were compared. A new quality assessment method of combining the effect of the laser on substrate materials and symbol grade of laser marked Data Matrix was put forward. Depending on previous research works, orthogonal experiment results were analyzed again and a modified nonlinear mathematics model was established. Analysis results indicate that this modified model can explain 90.6% of symbol contrast change and it is statistically significant. So it is better than previous linear regression model and can be used to estimate the quality of laser marked Data Matrix symbols on titanium alloy substrates. The nonlinear mathematics model can also explain the laser parameters influence on the symbol contrast.

Simulation and process optimization for laser marking of submillimetre rasterizing 2D code on stainless steel

“…2 Laser marking is a preferred method of performing DPM to attain permanent and highly contrasted superficial inscriptions on a wide variety of materials, ranging from glass, ceramics and wood to plastics and metals. [3][4][5][6][7] The vast expertise makes it possible to understand the influence of various material properties and processing parameters on the mark quality. Another factor affecting mark quality is the mark size.…”