Laser marking machine has two important technical indicators in the application of products: marking depth and marking size.
How to adjust the laser marking depth?
1. Direct adjustment method – Increase the power of the laser
We know that the laser is the core component of the laser marking machine, just like the engine of a car. As the quality of the laser is improved, the laser beam will inevitably be improved – increasing the power of the laser. Doing so tends to increase the cost of the whole machine, but the effect is definitely immediate.
Another point is that once the laser is upgraded, its corresponding supporting devices must be upgraded, so the cost of the whole machine will increase.
2. Change the field lens
Change the field lens of the laser marking machine into a small-range field lens. After the change, the marking depth will be deeper. For example, the previous semiconductor laser marking machine can match the 110mm field lens, into a 50mm field lens, the total laser energy and engraving depth will reach about twice the previous effect. The same applies to the popular fiber laser marking machines.
3. Improve the beam quality
To improve the beam quality, you need to adjust the inside of the laser cavity, replace the light guide material or the pump source, etc. Or upgrade the laser total reflection mirror and output mirror. For example, in the case of a semiconductor laser marking machine, a small hole is added to increase the cooling accuracy, and the laser mode is adjusted to make the laser large, round, and bright.
In short: to improve the configuration of the laser cavity. Make modifications. This is to understand the structure and configuration of the laser marking machine, otherwise, it will directly affect the equipment.
4. Slow down the marking speed of the laser marker
Under the same power and other parameters, just modify the marking speed, and the marking depth will of course be deeper. That is to say, the speed slows down, the power increases and the marking is deeper.
5. Replace the high-quality laser marking accessories – a high-quality laser group
It is a good way to process the light spot and use a beam expander, so that the laser’s focus will be strong. And the light spot effect obtained will be also ideal. For example, if a semiconductor laser marking machine uses an imported Q switch, its marking depth will be better.