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The Benefits of Laser Welding
12 de Novembro de 2018, 6:58 - sem comentários aindaMany parts in the manufacture of automobiles need to be welded. Welding is an important part of auto parts, so the quality of welding is very important. There are many welding methods for auto welding, but laser welding is directly reduced by a higher welding process. The weight of the car body, the assembly precision of the car body, and the rigidity of the car are greatly reduced, the cost of the car body and the accessories in the manufacturing process is greatly reduced, and the cost of the whole car is reduced. Therefore, the green laser pointer welding machine for the auto parts welding is a better choice.
With the development of laser technology, the reliability of laser welding equipment is improved, manufacturers no longer worry that laser welding equipment will affect the normal operation of the production line. Currently, laser equipment equipped on the automobile production line can run continuously for 24 hours, and the failure rate is very high. low. Modular design is now used, maintenance is also very convenient, technical requirements for maintenance personnel are not high, and repair time is very short. Due to the high-speed continuous operation of the laser welding equipment, the investment recovery time of the laser welding equipment is shortened, which not only improves the productivity, but also improves the quality of the automobile. The laser technology will also bring great economic and social benefits.
Laser welding is the most widely used laser welding technology in the automotive industry, as well as 488nm laser pointer marking technology and laser cutting technology. Laser welding uses a high-energy-density laser to illuminate the material connection at a material source, so that the separated material absorbs the laser energy and then rapidly melts or vaporizes and forms a molten pool together, which solidifies together and then joins together in the subsequent cooling process. There are two common types of high-power lasers for laser welding: CO2 lasers and solid/fiber lasers. The former has a wavelength of 10.6 μm or a wavelength of 1.06/1.07 μm, which is invisible to the naked eye.
The automotive industry uses a large number of laser-welded steel sheets and unequal-thickness steel plates to make full use of the excellent properties of laser welds. After welding, it is stamped and formed without cracking. On the one hand, for the steel parts with insufficient width, the parts of the car body are welded after welding, because the different parts of the car body are different in force, and the requirements on strength and rigidity are also different. In order to reduce the weight of the car body, the thickness is often selected according to the actual needs of each part. Different types of steel or different surface treatment methods are laser welded together as a blank before stamping. Compared with the old process, the integration of a plurality of punching sheets reduces many punches, so that not only the weight of the vehicle body is reduced, but also the cost is lowered. In addition, bumpers, body frames, and ribbed parts can be used to replace the old process.
The common welding principle is actually liquefying the metal, then cooling it and then dissolving it together. The body of the car is welded by four steel plates from top to bottom and left and right. The ordinary welding is spot welding, and the steel plates are connected together by one welding point. Laser welding is the physical principle of using the high temperature of the waterproof laser pointer, disrupting the molecular structure of the two steel plates, and rearranging the molecules to dissolve the molecules in the two steel plates. The actual operation is to use a polarizer to reflect the laser beam, so that it concentrates on the beam that produces great energy from the focusing device. The laser beam has a diameter in the range of 0.2-0.6 mm at the focus point, and a light intensity exceeding 106-108 watts/cm 2 is obtained, the focus is close to the workpiece, and the surface of the workpiece reaches a physical change of the fusion bond. Therefore, laser welding turns two steel sheets into one steel sheet, so it has higher strength than ordinary welding.
In the manufacturing process, the car has high precision, high deformation, small heat, small flaws, high weld quality, no solder, high efficiency welding speed and welding quality, ensuring low cost operation and unconditional high feasibility in the car. In the industry, the welding of welded parts, the welding of the body parts and the welding of parts are realized.
Auto parts can reduce the number of parts and molds by military laser pointer welding, reduce the number of spot welds, optimize the amount of materials, reduce the weight of parts, reduce the cost and improve the dimensional accuracy. The strength of the steel plate after laser welding will increase by more than 30%; The width of the joint surface can be reduced, the use of the sheet material is reduced, and the rigidity of the vehicle body is improved; the welded parts of the automobile itself are free from deformation, the welding speed is fast, and the welding machine does not require heat treatment, and the flexibility is strong. The advantages of high-strength weld bead strength and high speed are realized.
Although the strength of the resistance spot welding head is better than laser welding, it is still higher than the metal base material. The weakest part of the overall welded body is the welding heat affected zone on the base metal. That is to say, the metal base material is the weakest link, so once the body is subjected to strong external force, in most cases, the metal base material is destroyed, not the welded joint. It is precisely because of the existence of the short plate of the metal base material that the strength of the laser welded body and the resistance spot welded body is almost indistinguishable. Therefore, the usb laser pointer welded body is not more safe than the resistance spot welding body when it is affected by external force.
Application of Laser Welding Technology
6 de Novembro de 2017, 11:13 - sem comentários aindaLaser welding is a kind of high precision, high efficiency and new melting welding method with high energy density green laser beam as heat source and instantaneous melting of local material to form welded joint. Compared with the general welding technology, laser welding technology of high energy density, can penetrate a thick workpiece without groove, not only a substantial increase in the production of welding speed, high welding quality can also get high strength, small deformation, thereby significantly reducing the cost.
At present, laser welding machine, butt welding welding has been widely used in shipbuilding, several shipyards used this kind of welding machine. Laser welding of large ship plate production line, generally need to be equipped with: profile machining and finishing equipment, including chamfer rolling machine, sandblasting machine, continuous inkjet marking machine, plasma cutting equipment, transmission system, rolling platform, warehouse etc.; laser operating system, including red laser pointersource, mirror optical system, a numerical control table, control system and detection system; bracket system, including cutting bench, welding bench, lifting device, fixture etc.. Laser welding plate can greatly shorten the production time. In the traditional shipbuilding method, shape and position tolerances must be manually eliminated by laser welding of ship hull structure, with the good, can quickly form the profile, 12m plate length tolerance within 0.5mm, almost do not need to repeat the process, save a lot of people.
The laser welding will have a major impact on the following aspects of ship design, construction and service life: because no longer limited to the profile type, performance is a major consideration, optimize the design structure of the target; the 3D complex builder component according to its shape into a two-dimensional component is relatively simple, with high the laser power faster and more accurately welded together, thereby reducing the cost of construction, reduce the workload of finishing, and reduce the weight of that type; users can reduce operating costs by welding greatly; the fatigue life due to the machining accuracy, reduce welding seam and prolong the ship internal space according to the need, easy weapon the equipment re deployment, fuel consumption reduction.
Since the steel was used in shipbuilding, people have been using arc welded skeleton stiffening plates as deck and bulkhead partitions to improve the structural efficiency of steel plates. The blue laser pointer welding of corrugated sandwich metal plate used in ship performance was studied in detail, including the small scale model test, fire prevention, noise and corrosion test, bending strength, compressive strength, shear strength and fatigue performance test, and the application test. The test results show that the sandwich plate can greatly reduce the weight of the structure, improve the deck or cabin partition refractory, insulation performance and smoothness, easy to apply paint and coatings; and can reduce the lifetime maintenance costs, increase the cabin space available.
Twist and installation error of large components can use advanced computer aided design, manufacturing technology and precision cutting technology are overcome, but even so, the arc welding process of single parts welded together, to use a large amount of weld metal, weld metal solidification charge shrink greatly the residual stress will lead to deformation. The laser welding technology has the advantages of narrow welding seam, fast welding speed, small amount of filling or no filling of weld metal, and small residual stress and deformation.
Laser processing technology is the use of the characteristics of laser beam interaction with the material of materials (including metal and nonmetal) for cutting, welding, surface treatment, punching, micro machining and as a light source, an object recognition technology and application field of traditional laser processing technology is the biggest. The laser pointer cutting PCB/FPC, without as needed for several traditional stamping mould, save time and cost; and laser cutting is a non-contact processing, eliminates the damage mechanical stamping components contact processing, greatly improving the rate of finished products, using PCB/FPC laser cutting is the inevitable trend of development.
Application of Laser Welding Technology
6 de Novembro de 2017, 11:13 - sem comentários aindaLaser welding is a kind of high precision, high efficiency and new melting welding method with high energy density green laser beam as heat source and instantaneous melting of local material to form welded joint. Compared with the general welding technology, laser welding technology of high energy density, can penetrate a thick workpiece without groove, not only a substantial increase in the production of welding speed, high welding quality can also get high strength, small deformation, thereby significantly reducing the cost.
At present, laser welding machine, butt welding welding has been widely used in shipbuilding, several shipyards used this kind of welding machine. Laser welding of large ship plate production line, generally need to be equipped with: profile machining and finishing equipment, including chamfer rolling machine, sandblasting machine, continuous inkjet marking machine, plasma cutting equipment, transmission system, rolling platform, warehouse etc.; laser operating system, including red laser pointersource, mirror optical system, a numerical control table, control system and detection system; bracket system, including cutting bench, welding bench, lifting device, fixture etc.. Laser welding plate can greatly shorten the production time. In the traditional shipbuilding method, shape and position tolerances must be manually eliminated by laser welding of ship hull structure, with the good, can quickly form the profile, 12m plate length tolerance within 0.5mm, almost do not need to repeat the process, save a lot of people.
The laser welding will have a major impact on the following aspects of ship design, construction and service life: because no longer limited to the profile type, performance is a major consideration, optimize the design structure of the target; the 3D complex builder component according to its shape into a two-dimensional component is relatively simple, with high the laser power faster and more accurately welded together, thereby reducing the cost of construction, reduce the workload of finishing, and reduce the weight of that type; users can reduce operating costs by welding greatly; the fatigue life due to the machining accuracy, reduce welding seam and prolong the ship internal space according to the need, easy weapon the equipment re deployment, fuel consumption reduction.
Since the steel was used in shipbuilding, people have been using arc welded skeleton stiffening plates as deck and bulkhead partitions to improve the structural efficiency of steel plates. The blue laser pointer welding of corrugated sandwich metal plate used in ship performance was studied in detail, including the small scale model test, fire prevention, noise and corrosion test, bending strength, compressive strength, shear strength and fatigue performance test, and the application test. The test results show that the sandwich plate can greatly reduce the weight of the structure, improve the deck or cabin partition refractory, insulation performance and smoothness, easy to apply paint and coatings; and can reduce the lifetime maintenance costs, increase the cabin space available.
Twist and installation error of large components can use advanced computer aided design, manufacturing technology and precision cutting technology are overcome, but even so, the arc welding process of single parts welded together, to use a large amount of weld metal, weld metal solidification charge shrink greatly the residual stress will lead to deformation. The laser welding technology has the advantages of narrow welding seam, fast welding speed, small amount of filling or no filling of weld metal, and small residual stress and deformation.
Laser processing technology is the use of the characteristics of laser beam interaction with the material of materials (including metal and nonmetal) for cutting, welding, surface treatment, punching, micro machining and as a light source, an object recognition technology and application field of traditional laser processing technology is the biggest. The laser pointer cutting PCB/FPC, without as needed for several traditional stamping mould, save time and cost; and laser cutting is a non-contact processing, eliminates the damage mechanical stamping components contact processing, greatly improving the rate of finished products, using PCB/FPC laser cutting is the inevitable trend of development.
Machinery Manufacturing Technology
9 de Outubro de 2017, 7:07 - sem comentários aindaThe difference in this material makes UV lasers the best choice for a wide range of PCB applications in a wide range of industrial applications, from the production of the most basic circuit boards, circuit wiring, to the production of compact embedded chips and other advanced processes are common. The UV green laser pointer system directly from the computer-aided design data to the processing circuit board means that there is no need for any middle man in the circuit board production process. Coupled with the precise focus of ultraviolet light, making the UV laser system can implement very characteristic of the program, and repeat the positioning.
At present, stainless steel laser cutting machine with its good beam quality, high precision, small kerf characteristics, smooth, flexible cutting arbitrary graphics are widely used in metal processing industry, there is no exception in the decoration industry, let's take a look at the application of stainless steel red laser pointer cutting machine in the decoration industry. Laser cutting system is constantly improving the high and new technology, information technology, compared with the traditional machinery manufacturing technology, another revolution, the stainless steel decoration engineering industry has a huge role in promoting. With the increasingly fierce market competition, the technology will play a more and more important role, and bring huge economic benefits.
Laser cutting is a process revolution of sheet metal processing, and it is a machining center in sheet metal processing". Laser cutting has a high degree of flexibility, cutting speed, high production efficiency, short product cycle, and has won a wide market for customers. Laser cutting and no cutting force, no deformation; no tool wear material, good adaptability; whether it is simple or complex parts, can be cut with a precision of blue laser pointer rapid forming; the narrow kerf, good cutting quality, high degree of automation, simple operation, low labor intensity, no pollution; can realize automatic cutting like, nesting, improve material utilization, low production cost, good economic benefit.
Moreover, North America's technological progress and higher R & D investment, is expected in the next five years to further promote the growth of the market. However, market opportunities that are not being developed by Asia-Pacific countries may also further drive the development of the global laser medical system market. As a result of the reduction in labor and manufacturing costs and the acceleration of technological progress, more companies in the Asia-Pacific region have adopted strategic expansion measures in this area and will bring strong growth momentum to the region over the next five years.
Some laser surgery, such as skin shaping and ophthalmic surgery, is called elective surgery. Some people think that the potential risk of these types of surgery may exceed the benefits they provide. For example, some healthy skin conditions may be exacerbated by laser pointer surgery. Because as a typical surgery, the overall poor health will also increase the risk of complications.
Please consult your doctor before deciding whether to undergo any laser surgery. Depending on your age, overall health status, health care plans, and laser surgery costs, your doctor may advise you to choose a traditional surgical procedure. For example, if your age is less than 18 years old, you should not accept Lasik (excimer laser surgery) ophthalmic surgery.
A summary of the different laser diode types
14 de Fevereiro de 2017, 10:52The early semiconductor Laser Cutter are Homojunction Lasers, which can operate cw only at cryogenic temperatures.Laser eye surgery to correct vision is not usually available on the NHS.HeNe lasers were the most common laser used in amateur holography until the advent of the diode lasers.This deposition can often be seen as a black deposit inside the tube and signifies the aging of the laser.
Fractional CO2 Laser Cutter are less invasive and generally require 2-3 weeks of recovery.Some cosmetic lasers only have a success rate around 60% and that is considered good.I'm undergoing a 6 session treatment of revlite nd yag laser to remove pigmentation.The principle of laser was first discovered by Einstein in 1917 but it was not until 1958 that laser was successfully developed.In these lasers, junction diodes are used.Which focuses the energy from the laser to its specific target.
Laser pointers are helpful tools but they must be used responsibly.Another benefit of the high powered laser pointer phosphor light source is that it enables the F70 projector to run in any orientation.Solid-state lasers have lasing material distributed in a solid matrix, such as the ruby or neodymium:yttrium-aluminum garnet "Yag" lasers.The main difference in most laser machines on the market is the source of the laser they use.
Research from a pocket high powered laser pointer is unlikely, but could be possible under certain conditions.The early laser pointers were helium-neon (HeNe) gas lasers and generated laser radiation at 633 nanometers (nm).From a laser safety point of view, the situation grew more complex as new diode lasers were developed producing light at 670nm.Never point a laser pointer into the eye otherwise irreversible damage will occur and never allow children to use any laser pointer.
The dye green laser pointer medium is typically in liquid form and the dye is circulated continuously through the laser chamber to keep it from being limited by saturation effects.Laser radiation will continue as long as energy is applied to the lasing medium.The following table gives details of a selection of the most important lasing materials and corresponding types of laser.
Fiber green laser pointer are a member of the solid state laser group.They're usually maintenance-free, and promise a long service life of at least 25,000 laser hours.Unlike fiber lasers, though, these laser types include relatively expensive pump diodes, which are wearing parts.In liquid lasers organic dyes are used as active medium inside the glass tube.The lasers typically produce high power pulse outputs in the blue.They are therefore more like synchrotron light sources or microwave tubes than like other lasers.
For useful background info on operating diode 100mw Laser .This image shows that this laser is a ring laser.The three basic requirements for an argon laser to be suitable for holography.It used small and mid frame used lasers typically go between $1000-$2500 including power supply.The two lasers most often used are the Pulsed Ruby Laser and the Frequency doubled Nd:YAG or Nd:Glass lasers.A summary of the different laser diode types with descriptions: double heterostructure.
