Fiber laser marking machines and UV laser marking machines differ significantly in their light source characteristics.
Fiber lasers operate at a wavelength of 1064 nm, which is in the infrared range. The beam is delivered through an optical fiber. This high-energy beam burns the material surface, producing a strong thermal effect and leaving marks through melting, oxidation, or carbonization.
UV lasers operate at a wavelength of 355 nm, which is in the ultraviolet range. They use a cold processing method. The short-wavelength beam directly breaks chemical bonds in the material, resulting in minimal thermal impact. This allows fine marking without significant heat damage or discoloration around the marked area.
In practical applications, fiber laser marking machines are mainly suitable for metal materials. Common uses include marking bearings, engine numbers, metal nameplates, and various metal components.
UV laser marking machines are more often used for non-metal materials. Typical applications include glass cups, ceramic cups, face masks, PCB boards, and most plastic products. Because UV marking produces less heat, it is especially suitable for heat-sensitive materials and applications requiring high edge quality.
In summary, fiber laser and UV laser marking machines differ clearly in light source properties and suitable materials. The choice between them should be based on the material to be marked and the required marking quality.
For both machine types, stable marking also depends on the precision of non-standard mechanical parts such as laser mounting brackets, galvanometer seats, and focusing lens holders. Hansheng Automation provides custom machining of these components from customer drawings or samples, including single-piece and small-batch orders.
