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The mystery of the depth of laser engraving: Why can certain materials reach 100μm marks?
With the advancement of laser technology, laser engraving has gradually become an indispensable processing method in various industrial and artistic fields.This technique uses a high-energy laser beam to directly cut the material to form precise patterns or letters.However, under the influence of different materials, why can some materials achieve even a sculpting depth of 100μm?Behind all this involves the perfect combination of material characteristics, laser action mechanism and engineering technology.
The working principle of laser engraving
Laser engraving creates visible markings by selectively removing microscopic layers of the material.Depending on the nature of the material, the interaction between the laser and the material will vary.On hard surfaces, the mechanism of action is mainly evaporation, that is, a focused laser beam removes tiny particles from the substrate, achieving deep engraving.This is different from laser marking, which usually only achieves shallow surface marking.
Short pulse high quality laser helps to transfer large amounts of energy without causing significant heating, thus achieving clean markings.
Engraving effects of different materials
In laser engraving, natural materials such as wood and stone exhibit different carving depths.For wood, the carbonization of lasers will blacken the surface, creating high contrast marks.Because stone is not easy to evaporate, other carving methods are usually used, such as sandblasting or cutting.
The Challenge of Plastics and Metals
Laser engraving of plastics requires consideration of their light absorption characteristics.Different types of plastics react differently to lasers.Some plastics melt during engraving, causing the edges to deform.As for metals, due to their strong thermal conductivity, pulsed lasers are required to avoid melting the surface when engraving.
Lasers with high peak power and low pulse duration can effectively remove metal surfaces without causing melting.
Application of laser engraving technology
Now, laser engraving technology has been widely used in jewelry production and art.This technology can not only be printed with higher accuracy, but also achieve personalized customization to meet the needs of consumers.In addition, technological advances in laser engraving equipment have made these devices smaller and easier to operate, allowing small and medium-sized enterprises and individual artists to enjoy the advantages of this advanced technology.
Conclusion and Outlook
The mystery of the depth of laser engraving is undoubtedly the result of the interaction between material properties and laser technology.With the continuous advancement of technology, more new laser technologies may appear in the future, further expanding the depth of engraving and the scope of materials.What major breakthroughs and changes do you think laser engraving will bring in the future?
