The Differences of CO2, Fiber and Ultraviolet Laser Marking Machines

Laser Marking Machine Introduction
Laser Marking Machine uses a laser beam to make permanent marks on the surface of various substances. The marking effect is achieved by evaporating the surface material to expose the deep material, thus engraving exquisite patterns, trademarks and words. In the market, the mainly applied laser marking machines are CO2 laser marking machine, fiber laser marking machine and ultraviolet laser marking machine.

CO2 Laser Marking Machine

• Working Principle
  The CO2 laser marking machine uses the infrared light band, a 10.64μm gas laser. CO2 gas is filled into a high-voltage discharge tube to generate glow discharge, causing gas molecules to release laser light. After amplifying the laser energy, a laser beam for material processing is formed. The laser beam gasifies the surface of the processed object to achieve the purpose of engraving.
• Function and Features
  • More suitable for non-metals. The degree of marking and burning is obvious. Not suitable for fine identification.
  • It can be widely used in industries such as electronic components, electrical parts, medicine, food, handicrafts, leather products, plastic products, etc.
  • This machine can be used alone or in combination on an assembly line.
  • The printing effect and marking speed can meet the requirements of high efficiency, high speed and high reliability of modern large-scale production.
• Industry Application
  CO2 laser marking machine can mark a variety of non-metallic materials and some metal products, such as bamboo products, wood, paper, ABS, PVC, epoxy resin, acrylic, leather, glass, architectural ceramics, rubber and so on. It is widely used in pharmaceutical packaging, food packaging, beverage packaging, plastics, textiles, leather, wood, handicrafts, electronic components, communications, watches, glasses, printing and other industries.

Fiber Laser Marking Machine

• Working Principle
  Fiber laser marking machine is a laser that uses rare-earth-doped glass fiber as the gain medium. It uses a laser beam to make permanent marks on the surface of various substances. The marking effect is achieved by evaporating the surface material to expose the deep material, or by using light energy to cause physical changes in the surface material to engrave traces, or by using light energy to burn off part of the material to reveal the required etched patterns, characters, barcodes and other types of graphics.
• Function Features
  • It is more suitable for marking metal materials, especially high-hardness materials.
  • It belongs to non-contact processing, does not damage products, has no tool wear, and has good marking quality.
  • The laser beam is thin, the consumption of processing materials is very small, and the treatment heat-affected zone is small.
  • High processing efficiency, computer-controlled, and easy to achieve automation.
• Industry Application
  Widely applicable to the marking of graphics and text in many fields such as integrated circuit chips, computer accessories, industrial bearings, clocks and watches, electronic and communication products, aerospace devices, various automotive parts, home appliances, hardware tools, molds, wires and cables, food packaging, jewelry, tobacco, and military affairs, as well as for mass production line operations.

Ultraviolet Laser Marking Machine

• Working Principle
  Ultraviolet laser marking machine is a high-tech equipment. It uses the high energy and high precision of ultraviolet laser to mark by controlling the focal point of the laser beam on the material surface. The working principle includes laser generation, laser regulation and marking process. When ultraviolet laser irradiates the surface of an object, the object absorbs laser energy to form the required mark.
• Function and Features
  • Compared with CO2 and fiber laser marking machines, it is suitable for a wider range of materials for processing.
  • The materials suitable for processing are more extensive.
  • The heat-affected zone is extremely small, there will be no thermal effect, and there will be no problem of material scorching.
  • Marking is fast and efficient.
  • The overall machine has stable performance, small size and low power consumption.
• Industry Application
  Ultraviolet laser marking machine is mainly characterized by its unique low-power laser beam. It is particularly suitable for the high-end market of ultra-fine processing. It is used for surface marking of packaging bottles of cosmetics, drugs, food and other polymer materials. The effect is fine, the marks are clear and firm, superior to ink jet coding and free of pollution. It is used for marking and scribing of flexible PCB boards. It is used for processing micropores and blind holes in silicon wafers. It is used for two-dimensional code marking on LCD liquid crystal glass, surface punching of glassware, surface coating marking of metal, plastic keys, electronic components, gifts, communication equipment, building materials and so on.