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Laser marking PCB to realize product quality traceability

Views: 13     Author: heyu     Publish Time: 06-18-2020      Origin: fiber laser cutting machine

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  The circuit board of each intelligent device will involve code marking. PCB laser marking machine is a two-dimensional code, number or text marking equipment commonly used in PCB factories. The prices on the purchase quotation are quite different, with obvious differences. How to choose a suitable equipment for product marking quality and reasonable price has become a headache for many purchasers.

  In recent years, PCB traceability system is becoming more and more popular, which can realize product quality control traceability, automatic identification, and also play a better role in brand promotion. Compared with the inkjet printer, the laser marking machine has more obvious characteristics. In the daily production and processing of the enterprise, the laser marking machine fully plays the role of non-contact processing, fast speed, no consumables and pollution-free. The marking size is very small (3 x 3mm) to mark the two-dimensional code clearly. It should be said that UV laser marking machine does not damage copper on the surface of PCB. It is a suitable laser marking machine for PCB processing.

  In the same configuration, the accuracy of UV laser marking machine is higher than that of CO2 laser marking machine. The output wavelength of UV laser is below 400nm, and the absorption of most materials for UV laser is higher than that of infrared laser, and UV photons are marked by "cold processing" which directly destroys the chemical bond on the surface of materials. Unlike infrared carbon dioxide marking by "hot processing" which evaporates the surface material at high temperature, the surface of materials has very low degree of carbonization, and the marking edge is more smooth and fine. In PCB factories, some flexible PCB substrates cannot be heat treated, but need to be processed by UV laser.

  UV laser marking machine UV laser marking machine is a fine equipment in the laser industry at present. It can mark on almost most of the laser application materials, especially on glass and silicon wafer. At present, it is widely used in the medical industry.


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