Laser marking machines widely used in the market include fiber laser marking machines and ultraviolet laser marking machines. Which of the two is better? In fact, both have their own advantages and disadvantages, but the differences are also very large, such as working principles, processing methods, and cost of use.

Let's take a look at the difference between fiber laser marking machine and UV laser marking machine:

1. Different lasers

The fiber laser marking machine uses rare earth doped glass fiber as the gain medium laser, and the laser wavelength is 1064nm. The UV laser marking machine uses a UV laser with a wavelength of 355nm.

2. The working principle is different

Fiber laser marking machines use a laser beam to make permanent marks on the surface of various materials. The function of marking is to expose the deep material through the evaporation of the surface material, or to "engrave" traces through the physical changes of the surface material caused by light energy, or to burn off part of the material through light energy to display the pattern, text, and barcode to be etched. and other types of graphics.

Ultraviolet laser marking machine is a series of laser marking machines, so the principle is similar to that of laser marking machine, which uses laser beams to make permanent marks on the surface of various materials. The function of marking is to directly break the molecular chain of the substance through the short-wave laser (different from the evaporation of the surface substance produced by the long-wave laser to expose the deep substance), revealing the pattern and text to be processed.

3. Different processing methods

Fiber laser marking machine uses laser for physical marking method. The laser physical processing method mainly processes the surface of products and materials, which belongs to thermal processing. UV laser marking machines use cold working, a chemical processing method, while laser chemical processing methods use lasers to penetrate deep into the product material for processing.

4. Different application fields

Fiber laser marking machine is basically suitable for laser marking of various metal surfaces. Due to the heat generated by its beam, it is not suitable for high-precision marking of special materials.

For example: widely used in integrated circuit chips, computer accessories, industrial bearings, watches, electronic communication products, aerospace devices, various auto parts, home appliances, hardware tools, molds, wires and cables, food packaging, jewelry, tobacco, military, And other on-site graphic marking, batch production line operations.

UV laser marking machine is especially suitable for the high-end market of fine processing.

For example:

A. Cosmetics, medicines, accessories and other polymer materials packaging bottles have good surface marking effect and strong cleaning power, which is better than inkjet coding, and has no pollution;

B. Marking and scribing of flexible pcb boards; processing of silicon wafer micro-holes and blind holes;

C. LCD liquid crystal glass two-dimensional code marking, glassware surface drilling, metal surface coating marking, plastic buttons, electronic components, gifts, communication equipment, building materials, etc.