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Hybrid Laser Marking: Peeling and Marking Copper with Precision

In the realm of industrial marking, the Laser marking machine stands as a versatile tool capable of inscribing a variety of materials with high precision and speed. When it comes to copper, a material known for its high reflectivity and thermal conductivity, traditional marking methods can be challenged by the material's properties. However, with the advent of advanced laser technologies, such as the hybrid laser marking machine, new possibilities have emerged for processing copper in ways that were previously unattainable.

The hybrid laser marking machine, which combines the capabilities of different laser types, such as fiber and UV lasers, offers a unique approach to handling copper. This technology allows for the selective removal of surface layers, such as nickel plating on copper, with minimal heat-affected zones (HAZ), thus preserving the integrity of the base material.

Peeling Copper Plated Layers with Precision

The process begins with the utilization of a high-energy laser pulse to ablate the nickel layer from the copper surface. The UV laser, with its short pulse width and high repetition rate, is particularly effective for this task. It interacts with the nickel layer, causing it to vaporize without transferring excessive heat to the underlying copper. This results in a clean, precise removal of the plating, revealing the copper surface beneath.

Achieving High Contrast Black Marking on Copper

Once the nickel layer is removed, the copper surface is then ready for black marking. The fiber laser, with its longer wavelength and higher power, is used to create high-contrast black marks on the copper. The laser's energy interacts with the copper atoms, causing a physical and chemical change in the surface, which results in a black oxide formation. This process is controlled to achieve the desired depth and darkness of the marking.

Advantages of Hybrid Laser Marking for Copper

1. Selective Material Processing: The hybrid system can target specific layers without affecting the underlying material, which is crucial for applications where the base material must remain intact.

2. Minimal Heat-Affected Zone: By controlling the laser parameters, the HAZ can be reduced to a minimum, preventing any deformation or discoloration of the copper.

3. High-Quality Marking: The combination of laser types allows for the creation of clear, high-contrast marks that are resistant to wear and environmental factors.

4. Flexibility: This technology is not limited to copper; it can be adapted for use with a variety of materials, expanding its application range.

5. Environmental Compliance: The process is more environmentally friendly compared to traditional chemical etching methods, as it eliminates the use of harmful chemicals.

Conclusion

The hybrid laser marking machine represents a significant advancement in the field of material processing, particularly for challenging materials like copper. By combining the strengths of different laser technologies, it offers a solution for precise material removal and high-contrast marking, making it an invaluable tool for industries that rely on the quality and longevity of their markings. As technology continues to evolve, the capabilities of laser marking machines will undoubtedly expand, opening up new possibilities for material processing and product identification.

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