The reasons for sparks generated by laser marking

During the laser marking process, sometimes sparks may appear on the surface of the product marking, indicating that the marking of the product has had an excessive impact on the surface and a high success rate in marking the product. If you want to ensure the perfect effect of the product, users must be proficient in adjusting the power of the marking machine and proficiently operating laser absorption on different material surfaces.

Below is an analysis of the reasons for sparks generated during laser marking processing:

1. The commonly used laser currently is thermal laser marking processing. The working principle is to use thermal energy to cause chemical or physical effects on the marked product, thereby achieving the purpose of laser marking and labeling.

2. The different properties of product materials determine that there are significant differences in the absorption rate of different substances towards lasers.

3. The pattern of the laser spot also has a certain relationship with the phenomenon of sparks.

4. Focal length adjustment: Positive defocus and defocus (also divided into positive defocus and negative defocus) have different effects on marking results.

5. The speed and power of marking can be adjusted to achieve a more perfect marking effect.

6. In terms of hardware: If the delay of the galvanometer and laser is calibrated properly during marking, sparks on nodes or bending points should be reduced.