Laser Welding Technology in Material Industry
Experiments show that high-brightness fiber lasers can overcome all the known problems in copper welding applications. The high power density achieves instantaneous coupling and formation of keyholes, enabling stability and high absorptivity even at 1070 nm. With a high dynamic beam swing, the welding process is very stable, thereby reducing or avoiding stomatal and splashing phenomena, resulting in high quality welds. The process parameters set for the swing of the beam enable the weld geometry to be controlled, resulting in a very shallow weld in the deep weld process. The use of long pulse quasi-continuous fiber laser, even in a single pulse through the beam high-speed dynamic movement to complete the spot welding. In this way, high-quality welds can be created by increasing the pulse at a very low average power.
Laser flight welding technology through the blue laser pointer beam incident to the scanning galvanometer X, Y axis of the two mirrors, the computer control the angle of the mirror to achieve any deflection of the laser beam. Through the linear movement of the negative lens, the focal position in the Z direction to produce a certain range of adjustment, through a certain power density of the laser to be processed in the workpiece surface to be processed at different locations to achieve welding connection. Galvanometer group of dynamic movement, so that the lens in the scanning lens laser beam quickly switch between the solder joints, focusing distance due to focusing lens, mirror small angle deflection can be achieved in the laser beam in the solder joints (seam) of the can be quickly switched, the positioning time is almost zero, which can achieve multi-point rapid welding.
Because of its use through the robot arm and laser scanner to ensure that the welding process with the workpiece zero contact, the weld position can be flexible and changeable and large parts, complex surface of the rapid multi-point welding. This will not only reduce the excessive investment in welding equipment and the use of the site occupancy, reduce the cost of a single production, and welding the overall effect of stability. Based on the above advantages, laser pointer welding technology in addition to apply to the trunk lid, door, seat plate, dashboard support, seat adjustment and seat frame and other white body on the welding, but also in the aluminum, galvanized sheet and battery, plastic and other welding on the widely used.
Around the processing technology, ultra-fast laser industry chain-related enterprises and research institutes are developing more stable performance, more cost-effective ultra-fast laser devices, beam space-time plastic transmission technology, combined with the best material processing technology and intelligent manufacturing combined with control technology. From the perspective of the extension of the industrial chain, the laser industry should look like this, by the 1 billion yuan output value of the laser, provoke 5 billion yuan output value of the green laser pointer processing system, and then provoke 50 billion yuan output value of the application area, so by 2020 ultra-fast laser industry chain scale can reach more than 70 billion US dollars in size.
If the use of traditional methods of rust removal, the project is large and complex, and rust powder is not only harmful to the health of workers, but also seriously pollute the environment. The laser in this area but show their talents, you can quickly and easily remove the metal surface or corner of the corrosion, and also to prevent further oxidation. Laser rust as a new cleaning process, in the field of rust on the surface of carbon steel has a huge development prospects.
Laser deinterleaving as an efficient cleaning method, usually used in the field of macro industries. In the laser de-lacquer process, the laser acts on the paint coating, the paint coating in the pulse time to absorb the red laser pointer energy and convert it into heat so that the temperature of the paint in a very short period of time to achieve its gasification temperature in order to achieve the paint Effect.
Laser Cutting Machine in Decoration Industry
In this study, a cadmium sulfide (CdS) line with a diameter of 204 nm and a length of 15 μm was used as the core design of the optical cavity (Fig. 1). The high refractive index of the nanowires causes the incident light to have a high reflectivity factor at the end face and be guided by the nanowires. This arrangement forms the Fabry-Burrow cavity, which, when activated by an external light source, forms a laser. The blue laser wavelength thus formed depends on the refractive index around it. By measuring the wavelength of the laser output, the refractive index of the liquid immersed in the nanowires can be determined.
There are a variety of methods for surface nanocrystallization of materials. There are a large number of surface nanocrystallization technologies. It is a surface layer which can realize the nano-characteristics by means of laser surface treatment technology and nanometer technology. It can be collectively referred to as laser surface nanocrystallization technology; More generally referred to as laser nano-surface engineering technology, is directly or mainly the use of laser this specific technical means to directly change or add material to change the surface of the solid material is treated, the composition or structure, so that the formation of nano-crystal Grain or a certain nanoparticle composition of the surface layer. Or the use of high power laser etching, laser embossing, laser hair, laser micro-nano modeling and other means to achieve nano-structure on the surface of the material.
Laser shock peening (LSP) is a kind of high and new technology to improve the fatigue, wear resistance and corrosion resistance of metal materials by using plasma shock wave produced by laser beams. The impact of laser surface nanocrystallization technology as shown in Figure 6, when the short pulse (NS) high power density (GW/cm2) of the laser irradiation to the metal surface absorption layer, absorbing layer to absorb laser energy explosive vaporization, high pressure (GPa) plasma, the plasma is constrained layer constraint, produce high impact wave effect on the metal surface and to the internal communication, the formation of dislocation structure dense and stable on the surface of the material, plastic deformation by dislocation slip, and the shock wave at the grain boundary reflection and refraction, the shock wave in multi direction effect on grain, thus the complexity of the dislocation slip, agglomeration and annihilation after the formation of new grain boundary, sub grain formation and smaller nanocrystals.
Air cutting: the advantage is very low processing costs, only need to consider the green laser pointer itself and air compressor electricity can be, without the need to produce high auxiliary gas costs, and cutting efficiency in the sheet can match the nitrogen cutting, is a kind of economic And efficient cutting method. But the shortcomings in the cutting surface is also obvious. First of all, the air cutting section will produce the bottom of the burr, laser processing products must also go through the deburring and other secondary processing, is not conducive to the entire product production cycle. Second, the air cutting section is easy to black, affecting the quality of the product. Therefore, the green laser pointer processing without the need for follow-up can not be reflected, so in the galvanized steel for the processing, many companies are reluctant to choose the way of air cutting.
At present, the stainless steel laser cutting machine with its beam of good quality, high precision, small slits, smooth cut, flexible cutting arbitrary graphics and other characteristics are widely used in metal processing industry, decoration engineering industry is no exception, the following we look at Look at the application of stainless steel laser pen cutting machine in decoration industry.
Laser cutting system is constantly improving the high-tech, information technology, relative to the traditional mechanical manufacturing technology, another revolution, the stainless steel decoration industry has produced a huge role in promoting. With the increasingly fierce market competition, the technology will play an increasingly important role, and bring huge economic benefits.
Marking Bathroom Products with Laser Marking Machine
Bathroom products, including bathroom cabinets, faucets, toilet, bathroom equipment, basin, flush valve / spool, bathroom accessories, bath and other daily health activities of space and supplies, and daily life everywhere, and people's daily life is closely related.
With the development of the national economy and people's living standards, people on the bathroom product quality requirements are getting higher and higher, sanitary products function is not just the traditional sense of the above bath function, the quality of sanitary products and appearance directly affect people's living environment Comfort. In order to product differentiation and branding, the appearance of sanitary products need to draw the pattern and LOGO and other information, and the logo and LOGO mark the accuracy will directly affect the product appearance and quality. In order to be able to give sanitary products better quality and appearance, and in order to give people a better visual enjoyment, and now a large number of bathroom products manufacturers, have chosen to use laser pointer marking machine on the appearance of sanitary products marked beautiful and exquisite designs and LOGO information.
Laser marking machine in the bathroom products processing advantages: the laser marking and the traditional standard is different from the laser marking the use of high-energy density of laser on the bathroom parts of the local irradiation, so that the surface material vaporization or color changes in the chemical reaction, leaving A method of marking a permanent mark. Is an effective means of anti-counterfeiting; laser marking machine does not produce any harmful to the human body and the environment of chemical substances, is environmentally friendly high-tech products.
Laser can be marked with a very fine light in the product material itself, high precision printing, control accuracy, clear and perfect interpretation of the print content, with strong market competitiveness, and environmental safety, without any corrosive, completely isolated The chemical pollution, for the operator is also a kind of intimate protection to ensure that the production site clean and tidy, reducing the late input, reducing the noise pollution. At the same time the current blue laser pointer equipment using computer software system to control, you can play in the bathroom products above the various text, symbols and patterns, not only easy to operate, while feature-rich, can greatly meet the rich and diverse sanitary products need to mark.
Technical Features of New Laser Die Cutting Machine
Laser die-cutting machine in the market application is not yet particularly popular, the traditional mechanical die-cutting and technology is still deeply rooted in today's laser die-cutting machine in the paper processing industry, for example, to analyze the laser die-cutting machine Advantages of the characteristics and traditional mechanical die-cutting of the technical characteristics!
High quality, high precision. With the development of die-cutting technology and blue laser pointer technology, the combination of the two, the use of laser to replace the traditional die-cutting die has a clear advantage. Laser die-cutting machine is a fully automatic laser cutting, no vibration deviation, high precision and stability. No need to make knife mold, by the computer directly control the laser cutting, and not limited by the complexity of the graphics, you can cut the traditional cutter can not complete the cutting needs.
No need for version, high efficiency. As the laser die-cutting technology is directly controlled by the computer, without the need to replace the knife template, can achieve different layout between the fast switching between the parts, saving the traditional die-cutting tool change and adjust the time, especially for short version, personalized mode Cut processing. Laser die-cutting machine with non-contact characteristics, change live fast, short production cycle, high production efficiency.
Easy to use, high security. Can be completed in the computer cutting graphics design, a variety of graphical parameter settings based on the software automatically generated. Therefore, the laser cutting machine easy to learn and use, the operator's skill requirements are low. Equipment, a high degree of automation, reducing the operator's labor intensity, at the same time, cutting the operator without the need for direct operation, safe.
Repeatable processing. As the laser pointer die cutting machine can store computer programmed cutting procedures, so when re production, you can only adjust the corresponding procedures can be cut, repeated processing.
Late use cost is low. Laser cutting technology costs including equipment cost and equipment cost, but the traditional die-cutting technology costs include production cost, knife mold proofing equipment cost, cost, traditional die-cutting equipment manual adjustment cost and waiting cost etc.. For the traditional die cutting technology, the cost of making knife mould is very expensive. For many small and medium-sized printing enterprises, the cost of making die after press printing is 3-5 / 10000, and more than 10-15 / year. Also needs experienced die cutting worker master, carries on the specialized installation and the adjustment. In addition, the space needed to store the knife template requires a variety of auxiliary tools, there are a variety of uncontrollable waste, and the higher the use cost of the traditional knife mold!
Technical innovation of the new birth of green laser pointer cutting technology is bound to bring paper products processing and packaging and printing industry, due to the superior performance of the laser cutting machine can be widely used in invitations, greeting cards, candy box, stickers, paper art, paper cutting, gift box, cake card, desk calendar, envelopes and other industries, laser cutting technology for processing printing and paper products.
Application of Stainless Steel Laser Cutting Machine in Decoration Engineering Industry
Stainless steel because of its strong corrosion resistance, high mechanical properties, the surface does not fade for a long time, the color with the light angle will produce different colors and other characteristics, is widely used in decorative engineering industry. For example, in a variety of top clubs, public public leisure places and other places in the decoration of the decoration, used as curtain wall, hall wall, elevator decoration, signs advertising, front screen and other decorative materials.
However, if the stainless steel plate made of stainless steel blue laser pointer products is a very complex technology live, the production process requires a lot of processes, such as the need to cut, fold, bend, welding and other mechanical processing. Among them, the cutting process is a more important process, stainless steel cutting traditional processing methods are many, but the efficiency is low, poor quality molding and rarely meet the needs of mass production.
At present, the stainless steel laser cutting machine with its beam of good quality, high precision, small slits, smooth cut, flexible cutting arbitrary graphics and other characteristics are widely used in metal processing industry, decoration engineering industry is no exception, the following we look at Look at the application of stainless steel most powerful laser cutting machine in decoration industry.
Laser cutting system is constantly improving the high-tech, information technology, relative to the traditional mechanical manufacturing technology, another revolution, the stainless steel decoration industry has produced a huge role in promoting. With the increasingly fierce market competition, the technology will play an increasingly important role, and bring huge economic benefits.
Analysis of China 's Laser Industry
In fact, blue laser pointer processing equipment in addition to the ever-increasing demand for power, has been committed to the quality of equipment assurance and technology development. The cost-effective ratio of laser processing equipment refers to the continuous reduction of product prices relative to performance guarantees, so that customers really use "cheap" products, rather than to sacrifice product performance, reduce equipment configuration to reduce the price, nor is it simple The pursuit of processing efficiency at the expense of processing stability. Laser processing equipment stability and efficiency is a contradiction, the product in the industry and the application market has been widely recognized, the formation of the brand, because the equipment has been cutting the stability of the first place, and the stability of the main indicators are Equipment failure rate.
In recent years, domestic and international laser industry mergers and acquisitions frequently, because the laser industry low level of repeated investment seriously lead to overcapacity and industrial transformation and upgrading of the demand coexist. Before 2010, high-power green laser pointer equipment industry also belongs to high-profit high-return industry. However, due to investment and technical threshold is not high, a lot of money into the market quickly showed a vicious competition situation. However, many companies have overlooked that the industry in fact the process threshold is high. Do not attach importance to process development, in the homogeneous competition environment, in order to pursue a lower price advantage, reduce equipment configuration and thus reduce the performance of equipment becomes inevitable, which led directly to a group of enterprises died, a number of enterprises overcapacity. While the excess capacity to make the advantages of mergers and acquisitions to reduce the cost of mergers and acquisitions began to prevail this stage. On the other hand, with the transformation and upgrading of the Chinese market continues to deepen, as the transformation and upgrading tool industry, the laser industry into a period of rapid development.
Power laser welding machine, host, power supply, table, refrigeration unit split design; the machine into my company's new condenser cavity, the photoelectric conversion efficiency, excellent beam quality, reflective surface and cooling medium without contact, cavity Long life, easy to replace xenon lamp and no need to adjust the optical path. PLC control and computer control in two ways to choose, the machine output power is stable, reliable performance, compact structure, beautiful appearance, easy to operate, with coaxial, paraxial gas protection device to improve the welding quality; and optional high power laser cutting Head, for cutting to expand the processing range.
Since the second quarter of this year, the market demand for equipment, the rapid increase in power, and soon from 4KW, 6KW to 8KW. Has been the customer's demand to upgrade to more than million watts, mainly due to customer processing capacity of laser processing equipment and processing efficiency requirements. On the one hand is the original customer with the same material with the thickness of the material cutting efficiency requirements, on the other hand is constantly emerging new areas of laser technology processing needs, especially for ultra-thick processing of materials processing requirements to laser processing technology Alternative to other processing technology.
China's manufacturing industry and intelligent manufacturing is still very far away from the industry 2.0 to industrial 4.0, China still has a long way to go. Germany's industrial 4.0 has hard power, the US industrial 4.0 has soft power, while China's industrial 4.0, 2.0, 3.0 and 4.0 are simultaneously developed. On the red laser pointer industry, whether it is the market demand or industry requirements, from the equipment automation requirements are still distance, and intelligent requirements, whether technical or market base are far worse. However, in new areas of new markets, the demand for automation equipment has increased significantly, especially in key industries and high-end customers.
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Laser Technology Challenges Thin and Brittle Nonmetallic Materials
Laser as an advanced processing tool, has more and more widely in the industrial production plays a pivotal role. With the continuous development of green laser pointer technology, its by virtue of the processing quality, processing complexity, processing efficiency and clean environmental protection and other advantages, not only in the stainless steel, copper, alloy and other metal materials processing favored, but also in the glass , Ceramics, sapphire, semiconductor silicon wafers, PCB board and other non-metallic materials processing highlights the unique advantages.
In these applications, glass, sapphire or ceramic and other materials, the thickness is usually thin, the hardness is getting higher and higher, very fragile. In the processing requirements, the application usually requires the use of these fine brittle materials on the very precise cutting, drilling and even slotting and other processing, which makes the traditional milling, drilling, grinding and other mechanical processing technology is facing Great challenge, because the material is extremely thin and very brittle, any stress applied to the material during contact with the process, may lead to material fragmentation, the final scrapped. However, the challenges faced by traditional machining methods have brought more opportunities for non-contact laser pen processing.
Glass, ceramics, sapphire and other brittle non-metallic materials, precision machining, usually using ultra-fast laser. Ultrafast laser pulse duration is extremely short, in nanoseconds, picoseconds and even femtosecond, the role of moderate laser energy on the surface of the material, by breaking the material chemical bond to achieve the purpose of material removal, in this process, the laser energy It is too late to pass around the processing range, the process has ended, so the heat is almost negligible, the material does not produce thermal damage. With the application of these brittle materials in products such as LEDs, smart phones, wearable equipment, etc., blue laser pointer, Laser technology in the field of brittle materials continue to break through.
The unique performance of glass, sapphire and other brittle, transparent materials will enable it to gain ever-increasing use in consumer electronics, medical equipment, integrated circuits, construction, automotive, aerospace and other market segments. Especially in the smart phone, wearing equipment, led by consumer electronics products, the strengthening of glass and sapphire applications, will have a lot of room for growth. Therefore, the market for brittle materials, laser processing needs are very good.
While the market is demanding high demand from the market to reduce processing steps, reduce material waste and dry process and other factors continue to drive, is also a strong impetus to the laser manufacturers and laser system integrators to provide continuous discussion, asking them not only to provide Traditional mechanical processing alternatives, but also continue to enhance the overall performance of laser pointer processing solutions to the processing quality, product yield, processing speed and mass production has been a breakthrough.
