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A laser marking machine is a device that uses a high-energy-density laser beam to create permanent marks on the surface of various materials. Through the interaction between the laser and the material surface (such as vaporization, melting, discoloration, etc.), it forms clear, precise, and wear-resistant marks. It is widely used in fields such as industrial manufacturing, electronic communications, medical devices, and auto parts.

Core Working PrincipleA laser marking machine generates high-energy laser through a laser device, which is focused by a galvanometer system. Under computer control, it rapidly scans the material surface according to preset patterns (such as text, QR codes, LOGOs, serial numbers, etc.). Depending on the material properties, laser energy causes physical or chemical changes on the surface:

• For metal materials (e.g., stainless steel, aluminum alloy): The laser vaporizes the surface layer to form indentation marks.
• For non-metal materials (e.g., plastic, wood, ceramic): The laser causes surface carbonization, discoloration, or melting to form contrast-color marks.
• For special materials (e.g., glass, OLED screens): Through the cold processing characteristics of ultraviolet lasers, non-thermal-damage marking is achieved.