Application of 355nm UV laser in high-precision two-dimensional code marking of faucets

Two-dimensional code is an important part of the mobile Internet era. It carries a large amount of information. Combined with scanning code identification software and hardware, it can also play a role in product traceability and anti-counterfeiting, and is widely used in daily life and industrial production. Laser marking technology is one of the largest application fields of laser processing. By combining QR code + laser marking, a permanent, pollution-free and irreversible "identification + traceability" solution appears, which can be used for faucets. High precision anti-counterfeiting mark.

Faucets are mostly made of metal and are often used in long-term humid places such as shower rooms and kitchens. Therefore, the material is usually made of refined copper as the body, and then plated with semi-gloss nickel, full-gloss nickel and chrome layers in turn, among which the outermost chrome layer is , play a role in hardening the surface while improving brightness and corrosion resistance.

When using a laser to carry out high-precision anti-counterfeiting marking on the faucet, the high-energy-density laser beam is irradiated to the surface of the workpiece, and the surface material will undergo a chemical reaction of vaporization or color change instantaneously, thereby leaving a permanent mark. For the external chrome layer of the faucet, the RFH 355nm UV laser has excellent comprehensive performance, and can make high-quality marks on the surface layer, and easily print text, patterns or other types of information.

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This is because the single-photon energy of UV light is high, and the extremely high energy can instantly detach the molecules on the surface of the chrome layer. This way of working does not generate heat, so UV laser marking is also called cold processing. Its beam quality is high (M2<1.2), and it is easy to focus. The diameter of the spot after focusing can reach about 10um, which creates a wide space for precision machining and anti-counterfeiting. The size of the marked characters ranges from millimeters to micrometers. The anti-counterfeiting of products has special significance. Moreover, the high stability of the laser makes the lines more uniform during marking, and the marking effect is delicate, which fully improves the appearance and brand effect of the product, and enhances the market competitiveness of the product.