In that way, a proportion of the fibers remain unmelted, and the strength and often flexibility of the fabric may be retained at the seam. FIGURE 4 shows a design for a waterproof jacket in which continuous and hermetic overlap welds are made in waterproof fabric laminate. The potential therefore arises for further automation of garment manufacturing for waterproof clothing, personal protective clothing, and other textile products. Fiber lasers are a new type of solid-state laser that generates the laser beam by pumping diode light directly into a fiber optic, causing a laser beam to be generated right inside the fiber optic.
The reflectivity of various metals decreases as the wavelength becomes shorter, and the reflectivity of Ag, Al, Cu to laser light is as high as 90% or more. The reflectivity of various metals to lasers of different wavelengths is shown in Table 1. However, due to the high reflectivity and good thermal conductivity of aluminum alloy and the shielding effect of plasma, some defects will inevitably occur during welding. The processed weldments were subjected to welding process experiments within 24 hours.
This concept requires good eye-hand coordination while using the 20x microscope. Sharp, focused laser light beams allow for rapid melting and cooling of similar or dissimilar alloys. The welding process can be performed extremely quickly and does pot scar or blemish the welding surface, hence eliminating the need for acid baths. In fact, by adjusting the laser’s beam diameter, a smooth, near polished finish can be achieved with the laser. These are some great information that you have shared herechoosing the right laser welding machine.I really loved it and thank you very much for sharing this with us.
Surface treatment of the material before welding, use organic solvents to remove oily dirt, and then immerse in NaOH solution, rinse the surface with running water and then perform the photochemical treatment. For example, non-heat-treated aluminum and aluminum alloy 1000 series, 3000 series and 5000 series have good weldability. Aluminum is a more active metal with low ionization energy and high thermal conductivity. It is easy to form a refractory Al2O3 film on the surface, and it is easy to form defects such as unfused, pores, inclusions, and thermal cracks in the weld, which reduces the mechanical properties of the welded joint. Han’s Laser Technology Industry Group Co., Ltd, a public company established in 1996, has become the Chinese national laser industry’s flagship and one of the world’s most famous laser equipment manufacturers.
It is a versatile process because it is capable of welding carbon steels, stainless steel, HSLA steel, aluminum, and titanium. Due to the high cooling rate, the problem of cracking is there when welding high-carbon steels. It is a very efficient welding process and can be automated with robotics machinery easily. The energy, pulse width frequency and light spot size can be adjusted to achieve different welding effects.
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The design allows you to adjust the height of the microscope and welding chamber from approximately 50″H to 53″H to accommodate your specific height. The Neutec® PulsePoint™ Studio™ Plus 150 Laser Welder offers a maximum pulse power and duration of 25mS at 150 joules. Plus, it has a spot diameter of 0.3–1.5mm that’s a lot stronger, more intense, and precise. With these specifications, the model offers a longer duty cycle and a lot more power for jewelers who work on more demanding projects.
Laser welding is a non-contact process that allows metal parts to be assembled mainly by means of a laser beam. Product designers and process engineers considering laser welding as an alternative to more conventional types of welding, such as MIG/TIG arc welding, will find each has its plusses and minuses. But for many applications laser welding is a cleaner, more precise, and more controlled method of welding and is especially much faster, cheaper and better controllable. A remote laser welding head, in combination with our robot controller, optimizes path configuration “on the fly”. The three-dimensional mobility of the laser beam increases utilization of the robot and minimizes the time between welds.
Developed for copper material processing in the electronics industry, these blue diode lasers are now available in six power levels between 300 and 2000 W. Polymer products can be laser-welded using a variety of process mechanisms and alternative equipment configurations such as gantry, robotic, scanner, or fixed diode arrays. The laser provides an efficient energy source to give precise heating and localized melting. The welds are completed rapidly, with high strength and good appearance. The advent of alternative absorbers for laser welding in 1998 allowed the joint to have much less visible color.
The welding process is efficiently achieved using very compact diode and fiber laser sources, and lends itself easily to high levels of automation. Applications of this technology exist for a wide variety of industry sectors and product types. The oldest tool on the bench, CO2 lasers generate a laser beam by applying electrical energy to an enclosed mixture of gases, which stimulates the CO2 molecule to give off photons of light, or heat. They offer high beam quality at a good dollar-per-watt ratio, can exceed 99 percent uptime, and are relatively eye-safe. During the last few years, the price of many laser welding systems has decreased, making them more affordable to jewelrymal1ufacturers, small design studios, repair shops, and retail jewelers. Prices of laser welding systems have stabilized over the last 12 to 18 months, and many lasers are now very competitively priced while offering” more features and flexibility for the user.
LightWELD is a Class IV laser system and routine precautions are required for the safe operation of the equipment. Operator protective equipment including welding gloves, welding shield and 1070 nm laser-safe glasses are required. Electro-optical conversion rate-high laser light output per second is optional. Not only can do pulse welding, but also continuous welding at high frequencies. A variety of hand-held laser heads are available for various needs such as external welding, internal welding, right-angle welding, narrow-side welding, and large spot welding, etc.
Laser welded assemblies of high-strength steel are increasingly used in auto body manufacturing because of their excellent performance. Medium and high carbon steels and common alloy steels can be laser welded well, but require preheating and post-weld treatment to relieve stress and avoid crack formation. However, due to deformation of the workpiece, thermal lens effect or multi-dimensional spatial curves during the welding process, the focal position can change and may be out of the allowable range. Currently in production, manual adjustment and repeated process tests are required to determine the appropriate focal position in order to obtain the desired depth of melt.
The welding point penetration and effective penetration decrease with the laser tilt angle. When it is greater than 60°, the effective welding penetration decreases to zero. Therefore, the best choice for welding aluminum alloy is sharp wave and double peak wave. Under the strong vibration of light electromagnetic waves, strong reflected waves and weaker transmitted waves are generated. The reflected waves are not easily absorbed by the aluminum alloy surface, so the aluminum alloy surface has a higher reflectivity to the laser at room temperature. It can be seen that aluminum alloy has the characteristics of high reflectivity to laser light and low absorption rate.