Laser CO2 and fiber


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Laser marking has become an increasingly widespread technology in many industrial sectors thanks to its ability to engrave and print permanently on a wide range of materials. Both CO2 laser markers and fiber laser markers use the principle of lasers to achieve high-quality results: if you're wondering what materials a laser can cut, how to engrave metal with a laser, or have other questions, read this article to delve into the differences and applications for each type of marking.


How CO2 Laser Cutting Works

CO2 laser marking uses a laser tube that emits an infrared beam at a wavelength of 10.6 µm. This type of marking is typically used for non-metallic materials such as wood, plastic, glass, and rubber. The CO2 laser works by heating the marking material to the point where ablation or melting occurs, thereby creating a permanent mark.


Advantages of CO2 Laser Markers

Material versatility: CO2 laser marking is effective on a wide range of non-metallic materials, making it suitable for applications such as glass engraving, plastic marking, and wood cutting.
Marking curved surfaces: Thanks to the wavelength of the CO2 laser, it is possible to achieve uniform marking even on curved or irregular surfaces.
Low-temperature processing: CO2 laser marking generates less heat compared to other marking technologies, reducing the risk of damaging heat-sensitive materials.

Fiber Laser Marking

Fiber laser marking uses a laser beam generated by erbium-doped optical fiber, which emits an infrared beam with a wavelength of 1.06 µm. This type of marking is primarily used for metallic materials such as steel, aluminum, copper, and titanium. The fiber laser works by creating a chemical reaction on the surface of the material, resulting in a permanent mark.

Advantages of Fiber Laser Marking

 • Metal marking: Fiber lasers are highly effective on metallic materials, offering high-quality and durable marking. • Marking speed: Thanks to its power and precision, fiber laser marking can work very quickly, reducing production times.
Corrosion resistance: Fiber laser markings tend to be more resistant to corrosion compared to CO2 laser markings, ensuring long-lasting durability. Due to the fiber laser's wavelength, marking on non-metallic materials may be less visible or have less accurate results. Additionally, unlike CO2 lasers, fiber laser engraving may be more challenging on curved or irregular surfaces.

Laserable Materials: CO2 or Fiber Laser?

Both CO2 laser marking and fiber laser marking have their advantages and preferred applications. The choice between the two depends mainly on the material to be marked and the specific application requirements. CO2 laser marking is ideal for non-metallic materials and curved surfaces, while fiber laser marking is the best choice for metal marking and when speed and corrosion resistance are required. With a clear understanding of the differences between these two types of laser marking, companies can choose the best solution to achieve optimal marking results.