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Laser Marking Machine Principle: Core Technology & Applications of Precision Marking

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On 2025年9月27日
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Laser Marking Machine Principle: Core Technology & Applications of Precision Marking

Laser Marking Machine Principle: Core Technology & Applications of Precision Marking centers on material interaction driven by focused laser energy. Its core technology uses a laser source (fiber, CO₂, or UV) to generate high-intensity beams, which alter surface properties—like ablation, discoloration, or engraving—without contact. This precision targets tiny areas (down to 0.01mm), making it ideal for electronics, jewelry, and medical devices needing detailed marks.
Moreover, key components amplify its functionality for diverse uses. A galvanometer scanner controls beam direction for fast, accurate patterns, while a focusing lens narrows energy to specific points. For metals, fiber lasers create permanent, wear-resistant codes; for plastics, UV lasers produce crisp, non-toxic marks. This adaptability lets it serve industries from automotive part tracing to semiconductor labeling.
Finally, Laser Marking Machine Principle: Core Technology & Applications of Precision Marking links tech to real-world value. It supports batch production with consistent results and handles custom designs for small runs. Unlike ink-based methods, it needs no consumables and minimizes waste. For businesses prioritizing precision, durability, and efficiency, it becomes a foundational tool for product identification.

Core Working Principle of Laser Marking Machine

The laser marking machine achieves precision marking through a five-step process: laser generation – beam control – focusing – material interaction – permanent marking. The key is to convert ordinary light into a laser beam with high directionality and high coherence, and accurately focus it into a high-energy light spot to produce controllable changes when interacting with materials.
  • Laser Generation: A laser oscillator generates a high-intensity laser beam by exciting a gain medium (fiber, CO₂ gas, etc.). Different media correspond to marking needs of different materials such as metals and non-metals.
  • Beam Control: The galvanometer system quickly adjusts the laser direction to achieve high-speed 2D plane scanning, ensuring precise marking positions.
  • Focusing: A focusing lens concentrates the laser into a high-energy light spot of a few micrometers, which determines the marking precision.
  • Material Interaction: According to laser parameters and material characteristics, four core effects are produced: annealing (metal discoloration), etching (surface melting), ablation (material gasification), and oxidation (metal oxide film).
  • Permanent Marking: Directly changes the material properties to form high-contrast marks without ink, which are wear-resistant and environmentally friendly.

Key Application Fields

  • Industrial Manufacturing: Marking serial numbers and QR codes on auto parts and electronic components to realize full-life cycle traceability.
  • Consumer Goods Field: Engraving fine logos and anti-counterfeiting marks on mobile phone casings, jewelry and luxury goods.
  • Medical Industry: Marking sterile numbers and production information on surgical instruments and implantable devices to ensure medical safety.
Interested in high-quality laser marking solutions? Contact us now via WhatsApp: +8619303036632 for a professional consultation!
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