Fiber green laser than its operating costs and power consumption is low, diode array excitation can be used is the laser pens. fiber end pumped optical focusing system and use the corresponding pump source into the cladding of the fiber. After a period of development, high power laser diode array two can generate high power blue laser pointer, and good beam quality, the average running time can reach ten thousand hours. But the stringent requirements for laser beams, the stability factors and parameters of the pulse limit mode limits its wide application.
Without complex optical focusing and green laser system. The single core can be produced with the same array of high output power, high quality laser pens and longer running time. Have a great relationship with the traditional mode of temperature blue laser pointer semiconductor, the need for accurate temperature control, and the fiber is not it. The model only has a relationship with the geometric characteristics of single-mode fiber. The fiber laser beams can maintain the same beam mode is used in the whole process.
Modulation of the optical fiber green laser is through the control switch of the pump source. It can be very high frequency modulation of the optical fiber laser pens, or a single pulse operation. Unlike traditional solid-state laser, fiber blue laser pointer because of its perfect fiber cross-sectional area, without preheating, can be very broad the environmental conditions for stable operation. Such as beam quality, power and so on. These laser beams can choose linear polarization output or random polarization mode, power output in 10% to 100%, the final spot size will not change because of changes in the environment and power.
Single mode green laser because of its excellent beam quality is greatly improved the process of traditional laser! In traditional laser kilowatt fiber laser pens compared with the same power, cutting speed and the welding penetration depth has been greatly improved. In addition, the traditional blue laser pointer at a wavelength of 1 microns due to huge power consumption, maintenance and operation the high cost of the common maximum power is only 5 kilowatts, and 3 kW fiber laser beams than its operating costs and power consumption are much lower!
Green laser based on technology, such as the technology of laser pens alloy and laser cladding technology, using blue laser pointer melt and mixed metal powder, laser beams as the coating to cover the surface of materials. However, the process also have some shortcomings. The process temperature is high, the phenomenon of shrinkage during solidification, and paint dilution factors must be considered, in order to avoid the deformation of the material, the residual stress exist high strength and unnecessary metal.
The material in a small portion of the molecule is always better than other molecules of high temperature. When they absorb green laser when they are stimulated into a higher energy state. In some materials at green laser to bring the molecules to the original level lower than them, vibration is more “cold” away. The blue laser pointer and molecular ratio of the absorbed light contains more energy, which is called laser beams.
In the manufacture of metal furniture, butt joints of green laserlaser beams welding are generally used to assemble edge and sub assemblies profiles after laser pens cutting and bending joint. For this shape, to ensure the quality of blue laser pointer on the weld joint, positioning and adjustment is particularly critical. Therefore, between the plate edges the distance should be less than 0.15mm. blue fiber laser beams device is the use of rare earth ion upconversion luminescence mechanism.
But in most cases, in order to improve the absorption efficiency and conversion efficiency of green laser pumped, pens or Pr will often use laser ions and Yb ions Co doped, sensitized by Yb ion, using the principle of multi phonon absorption to obtain blue laser pointer effect on the most efficient conversion, Tm/Yb Co doped and Pr/Yb Co doped this two types of laser beams upconversion fiber has been reported.
Green laser is generated mainly from high energy photon stimulated by a frequency of excitation on the atom radiation, and then get two photon characteristics. Then recycling incentives as like as two peas high energy levels of atoms, photons get exponentially growing, so the beginning of photon difference weak was increasing concern a.Green laser is generated in the process of.Blue laser pointer with the ordinary light of light in frequency, phase (coherence), the direction is different from the.Blue laser pointer in all of the photons have the same frequency and phase (coherence), direction, in addition to the laser or coherent light.
Green laser; high brightness, good direction, good monochromaticity, good coherence four characteristics. The receiving system of direct detection laser radar receiver system to signal, according to this principle can be used by the blue laser pointer range, the travel time to calculate distance.
We choose the green laser device is mainly based on the principle of frequency, durability, reliability, many aspects of cost and applicability of the.Green laser asked to meet the above various aspects has the blue laser pointer characteristics of coherence is not high, for direct and indirect detection methods, blue laser pointer is to choose direct type.
For the direct detection method also has two kinds of detection methods. One is the pulse type, its principle is based on the narrow pulse to record green laser the time to reach the destination, by measuring the time, use the formula to calculate the starting point to the end of the distance. Where C is the speed of light, F for the round-trip time, distance R. two is a continuous, blue laser pointer is based on the principle of phase difference.
The green laser connection, there are many defects, for example, the curing depth is limited by the device geometry; limit; green laser less than the local irradiation. Both have not cured adhesive dispensing device, and set the blue laser pointer, which makes the whole system become more complex, most notably in the actual use of the heating device. Such factors will exist on the device at the combination position offset trace, with the reliability of green laser and improve the practicability, with the rapid development of computer technology and blue laser pointer in blue laser, promoted the development of pointer.
Green laser and blue laser pointer is the two most widely used laser, now two kinds of lasers to do a simple comparison of green laser (wavelength of 1.06 m is in the aspect of material processing with the most extensive laser source. However, a lot of plastic and used as some special polymer flexible circuit board base material (such as polyimide), not by green laser treatment or heat treatment of fine processing. Generally is through the blue laser pointer device on the junction surface is fixed, the first is the blue laser pointer to the device junction, then through ultraviolet light irradiation curing.
The traditional green laser, leading to device coupling power value of arrhythmia, decrease in accuracy, influence the quality of products and production cycle is long, efficiency is not high. While the use of green laser welding welding technology of this model, with its solid welding, little deformation and high precision, fast speed, easy to realize automatic control etc., so blue laser pointer has become one of the important means. Therefore, blue laser pointer precision welding department developed a high speed automatic coupling of laser welding system.
This is the set of green laser technology, automation control technology. Through the sensor control technology and electric arc pendulum mechanism, to achieve blue laser pointer adapter and the contact surface fitting, namely automatic leveling device. Usually two control surface gap between 0.01 ~ 0.03mm.
As we all know, green laser galvanized steel, galvanized by surface to protect the blue laser pointer inside the carbon steel, long-term use is not easy to rust. This kind of plate blue laser pointer plate although than ordinary carbon steel plate is slightly more expensive, but because of green laser without the need for anti rust coating after the procedure, so from the cost of the whole product, or cost-effective.
The green laser.Blue laser pointer has already It is quite common for cutting cutting processing is that it is not a means of contact materials, so it will not damage the surface of the plate, and the section without any burr, is a big cuts after the procedure of processing methods. However, green laser also will encounter a variety of actual cutting to overcome the problem. Here we will look at the daily processing generally difficult cutting galvanized steel used by and blue laser pointer solutions.
Green laser this is the most traditional cutting method has the advantages of blue laser pointer gas of low cost, but also in the sheet metal processing with carbon steel mainly, without switching auxiliary gas frequently, so.Green laser factory management but the drawback is that after oxygen cutting, the cut surface surface will have a layer of oxide skin if, then this will be directly welded with oxide skin products, for a long time, blue laser pointer will be the natural oxide skin peeling. This is one reason to weld welding of galvanized steel plates.
Using green laser nitrogen for high speed machining, due to the blue laser pointer function with nitrogen is different from combustion with oxygen, but play a protective role, so the cutting section does not produce oxide. Many companies also took a fancy to this advantage, so green laser of galvanized steel plate cutting is often processed by nitrogen. But the nitrogen gas cutting the disadvantage is here: because blue laser pointer cutting section completely without protection, so the product is easy to rust.
The silicon material has completely changed the form of electrical equipment manufacturing green laser. This semiconductor rich is easy to be processed into small components, such as transistors, and method which is used can be extended to level of manufacturing industry, which makes the green laser components can be integrated by tens of thousands of production in a single chip.. these electronic engineers want to further expand the functions of the integrated circuit, so that they can create, processing and detection of green laser.
The processing speed of these green laser optoelectronic devices can accelerate the speed of digital information, and can realize the laser micron scale, for example, can be used in barcode scanner. However, the problem is that the silicon material is not an effective light generator.
An important consideration in any green laser structure is light feedback, ability of capturing light within the structure, to further drive the production of light. In the traditional green laser, this is achieved by placing a mirror in any one side of the light generating area. On the contrary, the use of the geometric equipment a cylindrical. This will put some green laser generated by the capture in equipment on the wall, and forcing it to spread in the cylinder. This is called the whispering gallery mode, because the same effect will occur in a circular room, such as the dome of the cathedral in the sound.
This device has a unique function, the echo wall pattern extends to the silicon and green laser. can provide optical amplification, and silicon passive guide green laser. “the next step, we hope these ideas applied to room temperature equipment.” at higher temperatures will need to design and manufacture the laser is adjusted.
The first proposed and applied to green laser cladding a layer of metal on metal matrix method patent; green laser cladding surface engineering technology has become a frontier topic, tribology, application of green laser and other fields, can be made into high performance at low cost on the plate surface, instead of a large number of advanced alloys, in order to save precious rare metal materials, and improve the comprehensive performance of the material, reduce energy consumption, suitable for local wear, erosion, oxidation and corrosion and other parts, received widespread attention at home and abroad; scientific research and application development has been rapid development.
Now the domestic and foreign research on green laser cladding roughly from the following perspectives: one is to study the mechanism of green laser cladding; two is the study of laser cladding technology and microstructure; three is the application of laser cladding. The green laser cladding on all aspects of the research and development status were introduced then, the article points out the main problems and development direction in the future.
Green laser cladding is a dynamic melting process, the molten pool is small in size, there are not only the heat transfer phenomenon, but also the existence of convection, mass transfer, which directly affect the macro morphology,green laser melt segregation, uniformity and other physical properties of metallurgical microstructure and composition, so the research of green laser cladding heating theory.
Find out the heat conduction in the process of laser cladding, convection and mass transfer and other issues, has important significance for understanding green laser cladding theory.
Galvanized sheet is used green laser more common materials in manufacturing industry, galvanized steel to prevent corrosion of the steel surface to prolong its service life, green laser on the surface of the steel plate coated with a layer of metallic zinc. Mainly used in home appliances shell, civil chimney, kitchen utensils,green laser so this kind of material is suitable for the use of laser cutting machine.
In the process of galvanized green laser sheet, need to add auxiliary gas, the plate section quality of purity and pressure line influence of gas cutting, cutting with the purity of oxygen should be above 99.6%, when cutting oxygen purity is high, galvanized plate section roughness and the green laser cutting quality is also higher, of course, the cutting cost cutting will increase. When the purity of nitrogen should be above 99.5%, improve the purity of nitrogen can be guaranteed in the process of cutting galvanized green laser plate plate in the slit does not change color.
Green laser cutting machine has become the main means of modern metal processing enterprises, the use of green laser cutting is focused by a high power density laser beam to the workpiece, is rapidly melting, vaporization of the material irradiation, or ablation to achieve ignition at the same time with the high speed airflow and beam coaxial blowing green laser molten material, so as to realize the workpiece cut.
General for galvanized sheet, green laser cutting machine can easily cut, most organic and inorganic materials can be used in industrial manufacturing systems are commonly used in all kinds of metal materials, whether it is what kind of hardness, almost cut. Copper, aluminum green laser and its alloy sheet are no problem.
Carbon dioxide green laser is a laser. The main material is carbon dioxide molecules. It can be expressed in a variety of energy states depending on its vibration and rotation form. The mixed green laser gas is shown in Figure 1 in the basic energy net carbon dioxide is a low-pressure gas caused by electronic release (usually 30-50 support) formation (electric plasma pulp). Such as Maxwell – Pohl Seidman distribution law said, in plasma, showing a variety of molecular excited state. Some will show a high green laser energy state (00o1) and its performance for asymmetric swing.
And when the hollow wall green laser collision or natural dissemination, such molecules can also loss of energy by accident. Through natural shine this energy will drop to symmetrical swing form (10o0) and emit photons may propagate to any direction (a beam green laser wavelength of 10.6 mu m). Occasionally, a photon along this the optical axis of the cavity downward green laser propagation will also resonate in the mirror swing.
The waste heat rejection mode has a great influence on the design of green laser system. In principle, there are two possible ways. The first way is the automatic processing of natural diffusion heat to tube wall based on the principle of operation is sealed and the slow axis flow green laser. second is based on air forced convection, the principle of operation is fast axial flow green laser. in general, there are five main types of carbon dioxide laser.
Seal or no flow of carbon dioxide green laser usually used to do laser beam deflection mark. Its discharge tube is completely sealed. The laser beam quality is very good. But in most cases the discharge can be for the old and the new can be re filled with air so easy maintenance. There is no need to use the gas supply system of separation type you only need to connect. Do less in green laser head. So it is compact and lightweight.
This is for IPG is important because green laser only IPG have the high power fiber lasers. Similarly, we found that the pulse green laser marking and engraving OEM customers to purchase more high power, it also enhances our competitiveness from the use of.OEM output power of 2 kW green laser to make use of 4 kW, 6 and kW 10 kW green laser is a continuing trend in the fourth quarter. We also expect the 12 kW fiber laser can demand has increased significantly.
There are special parts of Europe green laser demand driven strong growth for the core quarterly sales new record cutting applications encouraged. Our OEM customers green laser tend to improve their cutting power cutting system to improve the processing speed and cutting thickness, the third quarter sales, reflecting the demand at the green laser beginning of the year compared to the downturn, our core application needs there are signs of rebound rebound. Because in Asia and North America.
Compared green laser with the same period last year, widely used including automotive, aviation, oil, natural gas, nuclear power, railway, construction, heavy industry, green laser battery welding and cladding applications continue to be IPG business highlights. Welding application of sustained growth is because our fiber lasers significantly better beam quality, green laser faster welding speed the lower cost of equipment, and more suitable for the automation and process control.
As we continue green laser to develop new welding and cladding process and application of the laser so we can in our expected sales growth in the field. We have very many orders reserves in this core application. Green laser welding is the biggest advantage of processing new advanced materials such as high-strength steel, Aluminum Alloy, green laser titanium alloy and other alloy and a variety of metal complexes.