Can a 1mm QR code be printed by a laser marking machine?

 How to mark information on the surface of products? In traditional processes, there are generally corrosion, EDM, mechanical engraving, printing and other processes. Compared with traditional processing methods, laser marking technology has unparalleled advantages. So, can 1mm QR code laser marking machine print it out?

In the past few years, the demand for precision marking in industrial manufacturing has shown a positive trend. In particular, the production and manufacturing of high-quality consumer goods is driving this development trend to ensure high quality, such as component tracking, supply chain quality management to prevent product piracy and its quality logo marking with ultra-detailed 3D line vector coding. In many cases, this code is intentionally invisible to customers but can be read by sensors during the production process.  

Laser marking machines use laser beams to add long-term markings on the surface of various chemicals. The effect of marking is to expose deep chemicals under the volatilization of chemicals on the surface of the product, and then engrave various patterns, trademarks, logos, etc.

Due to this advantage, precision laser marking technology has been widely used in various industrial processing and manufacturing industries, including electronic optics, automotive manufacturing, and semiconductor materials.

Advantages of laser marking technology:

1. Laser marking is used as a processing method. There is no processing force between the steel parts. It has the advantages of no contact, no cutting speed, and low thermal damage, which ensures the original accuracy of the steel parts.

2. The spatial zoning and time zoning of laser marking are very good, and the material quality processing structure function and shape are particularly suitable for automated processing and special surface processing. The size and freedom of the environment are very large.

3. The laser marking machine is very delicate in marking and engraving. The wireframe appreciation exceeds the millimeter level. It is very difficult to imitate and change the logo produced by the technology to the millimeter weight level, which plays a very good role in the effective anti-counterfeiting of goods.

4. The laser cutting processing system software combines the computer numerical control machine tool technology to form an efficient and automated production equipment, which can produce various texts, markings and floral patterns, facilitate the development of software marking patterns, change the marking website content, and integrate the high efficiency and fast-paced regulations of intelligent manufacturing.

The choice of laser type is particularly important to achieve such precise marking results. There are two basic principles of laser marking: the "hot processing" laser beam (which is a concentrated energy flow) has a relatively high energy density, irradiating the surface of the processing material, and the material surface absorbs the laser energy, causing the entire process to excite heat in the irradiation area, and then increase the temperature of the material surface (or coating), causing abnormalities, melting, ablation, volatilization and other problems. The other "cold processing" cuts the chemical bonds in the material (especially organic materials) or the surrounding media, and loads high-energy (ultraviolet) photons, thereby destroying the non-thermal process of the entire material. Because it is not thermal corrosion, it will cause thermal corrosion. Therefore, this cold processing has a special significance in the laser marking process. The "thermal damage" negative effect, in the inner layer and surrounding areas of the processing surface, cuts the cold separation of chemical bonds, and will not cause heating or thermal deformation. For example, an excimer laser is used to deposit chemical thin films on a semiconductor substrate to form narrow grooves.

Lower precision, low-quality laser marking mainly uses infrared fiber lasers because of their low cost. At the other extreme, ultrashort pulse picosecond and femtosecond lasers can be converted into high-quality marking results and three-dimensional line vector codes, but the cost is much higher. The design of pulsed ultraviolet nanosecond lasers is a solution to the cost and feature dilemma.

UV ultraviolet laser marking machine can meet all the important requirements for marking ultra-fine statistical data vectors with specifications as small as 150渭m. UV lasers can produce more detailed features and marks because they can be focused to a tighter spot size and have a shallower absorption depth in most materials. They also offer very high light quality, i.e. an annular beam profile with very low astigmatism and M2, allowing customers to create focused spots close to the diffraction limit. Typical ellipticity for UV lasers is <1.2, astigmatism <0.5*, and M2 of approximately 1.2.

Since high quality results also depend on the production and processing of the primary materials, we have to cover a wide range of materials in order to cover a wide range of materials. UV Ultraviolet Category >1500渭J UV laser marking machine and >150渭J at 532nm and >4W at 565nm and >5W at 532nm meet the requirements of higher power versions with high repetition rate.

In order to achieve high-quality production and processing, we also need to have excellent pulse control function. Pulse on demand with uniform pulse energy = fast and precise marking can be established to provide PSO UV laser closed-loop pulse energy control function called fitness function. It can realize the fine control of each laser pulse, thus forming ultra-fine structures. With UV lasers, we have demonstrated ultra-fine machine-readable barcode marking in ceramics for mobile terminal applications and soda-lime glass applications. We were able to convert the UV wavelength to specifications below 12渭m and then resulted in 30 dots x 30 dots of 150渭m because. . Data Vector UV people used lasers with extraordinary light characteristics, including f=150mm telecentric lens beam expander to create this small white spot without complex template positioning regulations, that is, choosing the right focus point. Establish high production processing speeds and ms marking time.