Working principle and application range of ultraviolet laser marking machine

In the field of modern precision processing, the traditional laser marking machine uses laser heat treatment technology, and its fineness is limited. In this context, the UV laser marking machine has become the darling of the new era. It uses a cold working process called “illumination” effect, that is, “cold working” (ultraviolet) photons with very high load energy, which can destroy the chemical bonds in the material or surrounding medium, so that the material does not heat up. Therefore, the fineness and thermal effect are minimized, which is a big leap in laser technology.
Working principle of ultraviolet laser marking machine:
The reaction mechanism in UV laser processing is realized by photochemical ablation. Therefore, that is to say, the laser energy is used to destroy the bonds between atoms or molecules, so that it can become a small molecule and evaporate. The focus is very small, and the processing heat affected zone is very small. Therefore, hyperfine marking and special material marking can be performed.
Scope of application:
Nowadays, with the rapid development of laser equipment and the improvement of UV laser marking machine power. However, the UV laser marking machine is used in the high-end market of ultra fine processing, and is used on the surface of packaging bottles for iPhone, cosmetics, drugs, food and other polymer materials. Marking; Flexible PCB marking, micro hole cutting and blind hole processing; LCD liquid crystal glass, glassware surface, metal surface electroplating, plastic buttons, electronic components, gifts, communication equipment, building materials and other fields.

What factors affect the marking efficiency of the laser marking machine?

Laser marking machine is a technology that uses high-density laser beams to make permanent marks on the surface of objects.
The purpose of using optical fiber laser marking machine is to bring higher production efficiency.
Therefore, it is important to understand the factors that affect the marking speed of the machine.
First, mark the density.
In the case of the same format, the same spot and the same depth, the higher the marking density, the slower the marking speed. The reason is that the density directly increases the marking area.
Second, the tag format.
Large markers are slower than small markers because their galvanometer deflection area increases.
Third, the marking depth.
In order to perform deeper marking, the parameters of the optical fiber laser marking machine must be adjusted to increase the power and current, so the marking speed will be affected in these processes.
Fourth, laser spot size.
The smaller the point, the smaller the corresponding marking amount. Therefore, the larger the point, the faster the marking speed.

Which CO2 or optical fiber laser marking machine should be purchased

If you want to mark metal, you need to purchase an optical fiber laser marking machine. Or if you want to mark organic materials such as textiles, wood or cardboard, CO2 laser is the best choice.
Moreover, if your application is metal laser cutting, you may need high-power CW (continuous wave) fiber laser.
The main difference that determines the type of material each laser can handle is the wavelength. The wavelength of a fiber laser is usually 1060 nm, while that of a CO2 laser is 10600 nm. Generally, fiber lasers have many advantages over carbon dioxide lasers.
Which CO2 or optical fiber laser marking machine should be purchased?
Fiber laser
Fiber lasers are best suited for high contrast marking, such as metal annealing, etching, and engraving. Their extremely small focal length (up to 100 times the intensity of the CO2 system) makes them ideal for permanently marking serial numbers, barcodes and data matrices on metals. Fiber lasers are widely used for product traceability (direct part marking) and identification applications.
One advantage is that the fiber laser is maintenance free and has a long service life (our laser has a service life of at least 100000 working hours). They are also smaller than CO2 lasers. Plus, due to the high electrical efficiency of fiber lasers. They use significantly less power than CO2 lasers, saving significant costs for cutting applications.
Fiber lasers are also increasingly needed for industrial cleaning applications, such as removing rust, paint, oxides and other contaminants.
CO2 laser
CO2 laser marking is very suitable for various non-metallic materials, including plastics, textiles, glass, acrylic acid, wood, and even stone. They are used for drug and food packaging, as well as the marking of PVC pipes, building materials, mobile communication gadgets, electrical appliances, integrated circuits and electronic components.
If you need to cut thick materials, it is better to use a CO2 laser. When cutting materials above 5 mm, the CO2 laser has faster initial perforation time, faster linear cutting and higher surface finish.
Unfortunately, CO2 lasers consume much more power than fiber lasers, resulting in higher operating costs. For example, when operating at maximum power, high-power CO2 lasers and coolers will consume about 70 kW. A fiber laser of similar power consumes about 18 kW.
The cost of CO2 lasers is often lower than that of fiber lasers.
conclusion
Although each laser has its advantages and unique use cases, CO2 is an older technology. With the development of technology, fiber lasers are rapidly gaining market share. Compared with CO2 laser, with the advantage of speed, almost half of the operating cost and three to four times of the throughput, the use of fiber laser is more cost-effective.

Application fields and precautions of laser marking machine

With the rapid development of science and technology and the improvement of various productivity levels, optical fiber laser marking machines are used more and more widely. What areas are particularly demanding? What should be paid attention to when using the optical fiber laser printer? Let’s summarize below.
Application field of optical fiber laser marking machine
First, the gift industry
Reciprocity has always been a tradition of the chinese nation.
Nowadays, the production process of gifts is gradually improving, and the personalized needs of gifts are becoming increasingly rich.
In order to meet these requirements, it must rely on the help of online laser marking machine.
Second, the electronics industry
With the upgrading of electronic products, the electronic industry has higher and higher requirements for optical fiber laser marking.
Such as circuit board mark, electronic component mark, etc.
Application fields and precautions of laser marking machine
Third, packaging industry
The packaging industry needs to mark various information on the packaging of different materials, such as text, symbol, date, batch number, barcode and QR code.
Optical fiber laser marking machine is a good helper for marking application in packaging industry.
Fourth, pharmaceutical industry
Due to its particularity, the pharmaceutical industry has strict quality standards.
In order to mark the label of the above medical packaging, there is also a set of production standards.
This is a piece of cake for the optical fiber laser marking machine.
Fifth, food, beverage, tobacco and alcohol industries
The optical fiber laser marking machine is used to mark food, beverage, tobacco and alcohol packages. The marking is permanent and can fully ensure food safety.
Finally, the commodity industry
As daily necessities, people’s daily life is closely related to daily necessities.
Nowadays, the commodity industry also uses the optical fiber laser marking machine to mark the production batch number on the package.

Application of laser marking machine in daily necessities?

With the improvement of living standards and the increasing number of daily necessities. Therefore, it has become an indispensable part of people’s daily life.
First of all, the icons, environmental protection signs and parameters shall be clearly marked on the daily necessities to remind the safety of the goods. The scope and duration of use are particularly important.
The working principle of the laser marking machine is to collect the laser on the surface of the object to be marked with very high energy density, and evaporate the surface material in a very short time. The effective displacement of the laser beam is precisely controlled. Therefore, it is a green and safe marking equipment, with beautiful patterns or characters, no consumables, and more convenient maintenance.
The advantages of the laser marking machine are as follows:
1. First of all, the marked graphics have high accuracy, no wiping, no fading, and obvious anti-counterfeiting effect, which is conducive to product tracking records;
2. Adding added value can make the product appearance higher grade and enhance the brand awareness of the product;
3. Higher efficiency, no consumables, finished products, widely applicable materials, no need for secondary investment;
4. When using daily necessities, there will be no harmful elements, and there is a safety guarantee!
Usually, in a high-tech environment. The small optical fiber laser marking machine launched by Chuyu Optoelectronics has been designed. Long service life can reduce production costs and reduce consumables for customers. Anti damage, fast, more safe and environmentally friendly, simple operation. Improve productivity.

What are the advantages of laser marking machine?

Laser marking machine is a kind of printing date, newspaper date, batch number, model specification, trademark and anti-counterfeit label, used for various materials and different types of machines.
The equipment uses a computer control system to automate the coding process to identify and code the equipment.
Advantages of laser marking machine
First, good reliability.
The laser printer has a mature industrial design, a wide temperature adaptation range (5 ° C – 45 ° C), stable stability, low failure rate and is not easy to wear.
It can work continuously for a long time, and the maintenance free time exceeds 20000 hours. The average working time is up to 100000 hours.
It is very popular in production codes of various industries, and can carve metal materials and some non-metallic materials.
What are the advantages of laser marking machine?
Secondly, there is no need for consumables and the cost is low.
The laser marking machine does not need any consumables. The running cost of the equipment is extremely low, and the processing cost is also very low.
Maintenance free operation avoids frequent unplanned downtime, and will not cause direct losses to production and operation companies.
Third, the effect is good and the anti-counterfeiting function is high.
The laser printer has clear marks, high fidelity and scratch resistance, making it highly anti-counterfeiting and unique.
Perform linear, non-contact, uninterrupted high-quality laser coding. Never wipe.
Fourth, environmental protection and energy conservation.
The laser marking machine does not use any consumables and does not produce any chemical substances harmful to the environment and human body.
It is an environment-friendly high-tech product.
Fifth, extremely low power consumption and high electro-optic conversion efficiency
Laser marking machines are mainly concentrated in beverage, beer, mineral water and other industries, but they have also started to develop in wire and cable, non-staple food, cigarettes, batteries and other industries.
In addition to knowing the date of manufacture, the encoding function can also track potential problems and prevent forgery. It can be said that the food industry is the largest market for laser marking machines.

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