How to set the font depth parameter of the fiber laser marking machine?

The fiber laser marking machines are long known to have a great capability to make high-quality and accurate marks. Generally, they are controlled by computer systems to customize the shape, depth, and size of the marks. So, how exactly can an operator set the depth of the mark on a fiber laser marking machine? Please allow me to introduce that to you in the following contents.

Here is the content list:

l  What are the factors that decide the depth of marks?

l  How to adjust the depth of marks?

What are the factors that decide the depth of marks?

Simply put, the depth of the mark depends on the type of fiber laser used, the parameters used to create the mark, and the types of target materials. For example, the depth of a single mark on the plastic can be easily controlled and changed from a few microns to more than 1 mm. However, the depth of metal marks is usually only 10-90μm, so deep engraving takes longer to complete. To put in a more specific way, three main factors are essential for the depth of the mark, the first one is the power level of the fiber laser marking machine. Usually, higher power means a bigger capacity to make deeper marks or a higher frequency to make deep marks. If the mark is too aggressive at full power, increasing the speed before reducing the power could help to reduce the cycle time as well. The second main factor is speed. The "velocity" attribute represents the vector velocity (in mm/sec) of the laser beam propagation when marking the object. Using a lower speed will produce a deeper and clearer mark, if the speed is too high, the laser beam will not affect the marked material enough to make the mark visible. The third factor is frequency. The frequency (Hz) attribute represents the Q switching frequency of the laser pulse during the marking process. Changing this frequency will produce different marking effects. This parameter is used to adjust the output frequency of the laser by directly operating the Q switch. The Q switch is an electro-optical system that can control the opacity of the lens so that the frequency of the laser beam can be changed. Lower frequencies will generate "spot" engraving, while higher frequencies will allow "line" engraving. The frequency is inversely proportional to the laser beam power, that is, if the frequency is too high, the power may not be suitable for the marking process.

How to adjust the depth of marks?

After talking about exactly are the factors that determine the depth of marks, now we can go on to learn about how to adjust the depth. Well, since most fiber laser marking machine has a PC controller for all kinds of adjustments, therefore most of the changes of mark depth are done by the handling of software on the computer. Usually, there is a controller software, and the steps that are needed to do is to change the trade-off formula between the three factors. If you want a deeper depth, then you should choose a high-power fiber laser marking machine, and set a lower speed or a lower frequency on the controller panel of that machine.

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