Fibre laser marking machines use laser beams to mark permanent surfaces on a variety of different materials. The effect of marking is to expose deep substances by evaporation of surface substances, or to cause marks by chemical and physical changes of surface substances by light energy, or to burn some substances by light energy to reveal patterns and texts required for etching. , barcodes and other graphics.
First of all, it is not a matter of material that can be used for depth. For example, copper can make it difficult to print on it. Stainless steel is a good depth. In the case of products with different hardness, it is necessary to adjust the depth of marking during the operation of the marking machine. In order to achieve the best results of our marking products, how can we mark the satisfactory results? Let us make a simple explanation: First, we must know what hardness is, the harder a product is, the deeper it is to be engraved. The effect requires more power. As an example, the hardness of aluminium and brass is soft. We can choose lower pressure to mark when printing, and 0.2-0.4 MPa is suitable for this kind of metal. However, the hardness of stainless steel products is relatively high, requiring a pressure of 0.4-0.7 kg. After talking about the hardness and pressure, let's talk about the optimal distance between the laser marking machine needle and the imprinted workpiece.
Secondly, the power, the higher the power of the fibre laser marking machine, the easier it is to hit the depth when marking. Of course, there are also differences in the depth of the lasers of different brands. This difference is not very obvious. The relationship between motor power and marking depth. When we increase the air pressure to mark the product deeper, we need a more powerful and stable motor and a more accurate motor driver. If the power of the motor is not enough, the driver is not accurate enough. Then the printed text is almost distorted. Therefore, when deeper marking depth or more precise results are required, we recommend choosing a different model.
Third, the adjustment of the parameters. The parameters should be set to high power, low frequency, low speed. After playing with high power, low frequency and low speed for several times, because of the slow speed, there will be deposits at the marking position, which will hinder the laser, so it is necessary to sweep it with high frequency and high speed to deposit the deposit. Sweep off and continue to play low frequency and low speed.