Improving Laser Marking Clarity

Through precise adjustment of the power, speed, and frequency, and with the proper pre-processing of materials and daily maintenance of the machine, the clarity of the laser marking can be significantly improved.The key was in dynamically adjusting the parameters according to the nature of the material, keeping the optical system clean, and mastering calibration techniques for the galvanometer mirrors and other maintenance skills. The end result was a high-quality marking system with excellent stability and efficiency.

Optimizing core parameters.

The perfect balance of power and speed.

The power of the laser and the speed of the scanning head are the two most important factors affecting the quality of the marking.He suggests using scraps to test out different combinations, such as reducing the speed when the power is set to 60 %, which produces deeper engravings without scorching the material.Don't get stuck on the default settings. The "temperament" of different materials can be quite different.

Frequency affects the details.

High frequency is suitable for carving fine patterns, but if the frequency is too high the lines will stick together.In this case, try reducing the frequency from 20 kHz to 15 kHz and increasing the duration of the laser pulse. The result is like using a fine brush to repeatedly trace the edges of an object, and the lines will be clean and sharp.

This is a key step in the material preparation process.

The hidden value of surface cleanliness.

Many people overlook the oxidation layer on the surface of the metal. Actually even a thin layer of oil will cause the laser beam to "slip.After wiping down the board with ethanol and letting it sit for three minutes, you will see that the burrs on the edges of the marks are greatly reduced.

The wonders of assist gases.

Don't underestimate the power of compressed air! By adjusting the angle of the nozzles so that the air is sprayed onto the marking area, the melted material can be blown away in a timely manner, and the surface of the material can be cooled.In particular, he found that when cutting stainless steel, the best results were obtained at an air pressure of about 0.3MPa.

Equipment maintenance experience.

The lenses are maintained on a regular cycle.

Dust on the lens is like a gauze over the camera. We recommend that you use special lens paper to wipe the lens in a single direction every eight hours of use.If you run into a stubborn stain, don't scrape at it. Instead, put a couple drops of lens cleaner on it, let it sit for 30 seconds, then gently wipe it off.

Calibrating the scanning mirror.

When the strokes of the characters are not evenly thick, don't be in a hurry to adjust the parameters.First, the X and Y axes of the scanner are calibrated.In order to calibrate the machine, the lighting in the workshop must be turned off, and the path of the laser beam must be observed to see if it is continuous. This step is akin to "eye exercises" for the machine.