The principle, advantages and application fields of laser marking machine

Laser marking machine is a device that uses laser beam to produce permanent marks on different material surfaces. There are various types of laser marking machines, according to the wavelength and power of the laser, they can be divided into fiber laser marking machine, CO2 laser marking machine, ultraviolet laser marking machine and so on. Different types of laser marking machines are suitable for different materials and industries.

The principle of laser engraving machine

The working principle of laser marking machine is to control the laser beam to move on the material surface, making the material undergo physical or chemical changes, thus forming visible patterns or texts. According to the interaction mode between the material and the laser, the laser marking machine can achieve the following marking modes:

• Evaporation: The high-energy laser beam heats a part of the material surface to vaporization, forming a depression, suitable for hard materials such as metal and ceramic.
• Melting: The high-energy laser beam heats a part of the material surface to melting, forming a protrusion or depression, suitable for soft materials such as plastic and glass.
• Foaming: The low-energy laser beam heats a part of the material surface to foaming, forming a protrusion, suitable for foaming materials such as polymer.
• Carbonization: The high-energy laser beam heats a part of the material surface to carbonization, forming black or gray patterns or texts, suitable for carbon-containing materials such as wood and paper.
• Coloring: The low-energy laser beam reacts with the pigment or additive in the material, changing its color, forming colorful or monochrome patterns or texts, suitable for colorable materials such as plastic and metal.

The advantages of laser engraving machine

Compared with traditional marking methods, laser marking machine has the following advantages:

• Permanence: The marks produced by laser marking machine will not degrade or disappear due to environmental factors, and have strong anti-counterfeiting function.
• Non-contact: Laser marking machine does not need to contact with the marked object, so it will not cause any damage or pollution, and does not need to replace consumables.
• Universality: Laser marking machine can mark on various different materials, including metal, plastic, glass, wood, paper and so on, and can achieve flat, curved, cylindrical and other shapes of marking.
• High precision: Laser marking machine can produce very fine and clear patterns or texts, with a resolution of up to 0.01mm, and can achieve micron-level depth control.
• Low cost: The operating cost of laser marking machine is very low, only need electricity and cooling water, do not need other auxiliary equipment or consumables, and the life of the laser is very long, can reach tens of thousands of hours.
• High efficiency: The marking speed of laser marking machine is very fast, can reach hundreds of characters or patterns per second, and can achieve automation or online marking, improve production efficiency and quality.
• High flexibility: Laser marking machine can be controlled by computer, achieve arbitrary patterns or texts of marking, and can be modified or updated at any time, adapt to different needs and occasions.
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The application fields of laser engraving machine

Due to its excellent performance and characteristics, laser marking machine has been widely used in various industries and fields, such as:

• Electronic industry: Laser marking machine can mark clear and lasting marks on electronic components, integrated circuits, circuit boards and other products, improve product identification and traceability.
• Mechanical industry: Laser marking machine can mark wear-resistant and rust-proof marks on metal parts, tools
• Automotive industry: Laser marking machine can be used in auto parts, tires, frames and other products for anti-counterfeiting and traceability marking, improve product compliance and trust.
• Medical industry: Laser marking machine can be used in medical devices, drugs, biological samples and other products for pollution-free and non-damaging marking, improve the hygiene and safety of products.
  Packaging industry: Laser marking machine can be beautiful and environmentally friendly marking on plastic bottles, cartons, metal cans and other packaging materials to improve the added value of products and brand image.

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