The application of laser marking .

Types of laser

Last week we have talked about the principle of laser marking.

We are going to look at the application of laser marking machine this week

So,there are three common types of laser marking machine:fiber laser,MOPA laer,CO2 laser.

Profile of fiber laser

Firstly,Let us look at the fiber laser,the wavelength is 1064 nm.

Fiber laser la have become a hot topic in laser physics research,

and  unanimously recognized as a new generation of products that completely replace solid-state lasers.

Fiber laser marking machines use laser beams to mark permanent surfaces on a variety of different materials.

The effect of it is to expose deep substances by evaporation of surface substances,

or to “engraving” traces by chemical or physical changes of surface substances caused by light energy,

or to burn off some substances by light energy to show the desired etching. Patterns, text, barcodes, etc.

The so-called fiber laser marking machine refers to the fiber laser used in this marking machine.

The fiber laser has small volume (no water cooling device, air cooling), good beam quality (base mode), maintenance-free, etc.

Mainly composed of laser, vibrating lens and marking card.

It uses laser fiber laser to produce laser marking machine.

The beam quality is good, its output center is 1064nm, and the whole machine life is about 100,000 hours.

Compared with other types of laser marking,

The device has a longer life span and an electro-optical conversion efficiency of 28% or more.

It has a great advantage in conversion efficiency of 2%-10% compared with other types of laser marking machines,

and has outstanding performance in energy saving and environmental protection.

the application of fiber laser marking

Fiber laser marking machines are widely used in integrated circuit chips,

firstly,computer accessories,

secondly,industrial bearings,

thirdly,watches and clocks,

fourthly,electronic and communication products,

aerospace equipment, various automotive parts,

sixthly,home appliances, hardware tools, molds,

seventhly,wire and cable, food packaging, jewelry,

eighthly,Marking and text marking in many fields such as tobacco and military affairs,

as well as high-volume production line operations.

 Profile of fiber MOPA laser marking

Pay attention to the wording of this fine marking.

The marking of the fiber optic machine used for metal and non-metallic hard plastics has not been described as fine.

For example, alumina, and some galvanized metals are difficult to use with a black fiber effect,

but the mopa laser marking machine can easily produce a black effect; for example, many friends consult the back cover of the mobile phone.

Can achieve the effect of the back cover of the Apple mobile phone, then also the mopa laser marking equipment can be done,

the effect of the ordinary laser machine is not so fine will be rough, but the mopa laser marking machine does not need to worry about such a problem. For example,

the surface coating of silica gel is marked. The Nokia mobile phone case should be familiar as well.

The mopa laser marking machine is used.

the application of mopa

The Mop-a laser marking machine M1 has a pulse width of 4-200 ns and a M6 pulse width of 2-200 ns.

The pulse width of a common laser machine is 118-126 ns.

It can be seen that the pulse width of the maga laser machine can be adjusted to a wider range,

so it is to understand why ordinary fibers can not prosuce some products  but the mopa laser machine can Do it.

The pulse frequency of the Mopa laser marking device is 45Khz, and the normal one is 20-80Khz. For a conventional fiber optic machine,

the larger the range of pulse frequency adjustment is, the more difficult it is to grasp the fine marking requirements.

I believe we should have a certain understanding of the mopa laser marking machine after comparing the marking effect and the pulse width and frequency.

It won’t be more mysterious because of multiple English letters. In fact,lasers determine the both devices .

Generally, manufacturers of lasers have mopa lasers.

It may be because the cost of lasers is different, so the cost of the whole machine is also different.

 the application of CO2 laser marking

The CO2 laser marking machine adopts an infrared light band.

and a 10.64μm gas laser to charge the CO2 gas into the high-voltage discharge tube to generate a glow discharge,

so that, the gas molecules release the laser, and the laser energy is amplified to form a laser beam for processing the material.

The laser beam vaporizes the surface of the object to achieve the purpose of engraving.

The CO2 laser is a molecular laser, and the main substance is carbon dioxide molecules

Like other gas lasers, the stimulated emission process complicate  principle of CO2 laser operation .

Like other gas lasers, the stimulated emission process complicate  principle of CO2 laser operation .

Molecules have three different movements, namely the movement of electrons in a molecule,

the movement of which determines the electronic energy state of the molecule; the second is the vibration of the atom in the molecule,

that is, the atom in the molecule constantly vibrates periodically around its equilibrium position

and  determined the vibrational energy state of the molecule;

the third is the rotation of the molecule,

that is, the molecule continuously rotates in space, and the movement of the molecule determines the rotational energy state of the molecule.

Molecular motion is extremely complex and the energy levels are complex.

In a word,different types of laser have different application and characteristics.