1. Factors affecting marking efficiency

For fixed marking patterns, factors affecting marking efficiency can be divided into equipment itself and processing materials. These two factors can be broken down into different aspects:

Therefore, factors that ultimately affect marking efficiency include filling type, F-Theta lens (filling line spacing), galvanometer (scanning speed), delay, laser, processing materials and other factors.

2. Measures to improve marking efficiency

(1) Choose the right filling type;

Bow filling: The marking efficiency is the highest, but sometimes there are problems with connecting lines and unevenness. When marking thin graphics and fonts, the above problems will not occur, so bow filling is the first choice.

Bidirectional filling: The marking efficiency is second, but the effect is good.

Unidirectional filling: The marking efficiency is the slowest and is rarely used in actual processing.

Turn-back filing: It is only used when marking thin graphics and fonts, and the efficiency is about the same as bow filling.

Note: When detail effects are not required, using bow filling can improve marking efficiency. Bidirectional filling is the best choice to ensure effectiveness and efficiency.

(2) Choose the right F-Theta lens;

The larger the focal length of the F-Theta lens, the larger the focused spot; at the same spot overlap rate, the spacing between filling lines can be increased, thereby improving marking efficiency.

Note: The larger the field lens, the smaller the power density, so it is necessary to increase the filling line spacing while ensuring sufficient marking energy.

(3) Choose a high-speed galvanometer;

The maximum scanning speed of ordinary galvanometers can only reach two to three thousand millimeters per second; the maximum scanning speed of high-speed galvanometers can reach tens of thousands of millimeters per second, effectively improving marking efficiency. In addition, when using ordinary galvanometers to mark small graphics or fonts, they are prone to deformation, and the scanning speed must be reduced to ensure the effect.

(4) Set appropriate delay;

Different filling types are affected by different delays, so reducing the delay unrelated to the filling type can improve marking efficiency.

Bow filling、Turn-back filing: Mainly affected by corner delay, it can reduce the light-on delay, light-off delay, and end delay.

Bidirectional filling、Unidirectional filling: Mainly affected by light-on delay and light-off delay, it can reduce corner delay and end delay.

(5) Choose the right laser;

For lasers that can be used for the first pulse, the height of the first pulse can be adjusted, and the turn-on delay can be 0. For methods such as bidirectional filling and unidirectional filling that are often switched on and off, the marking efficiency can be effectively improved.

Select pulse width and pulse frequency independently adjustable laser, not only to ensure that the spot can have a certain amount of overlap after focusing at high scanning speed, but also to ensure that the laser energy has enough peak power to reach the material’s destruction threshold, so that the material gasification.

(6) Processing materials;

For example: good (thick oxide layer, uniform oxidation, no wire drawing, fine sandblasting) anodized aluminum, when the scanning speed reaches two to three thousand millimeters per second, it can still produce a very black effect. With poor alumina, the scanning speed can only reach a few hundred millimeters per second. Therefore, suitable processing materials can effectively improve marking efficiency.

(7) Other measures;

❖Check “Distribute fill lines evenly”.

❖For graphics and fonts with thick markings, you can remove “Enable outline” and “Leave the edge once”.

❖If the effect allows, you can increase the “Jump Speed” and reduce the “Jump Delay” of “Advanced”.

❖Marking a large range of graphics and filling them appropriately into several parts can effectively reduce the jump time and improve marking efficiency.