Can you laser weld aluminum to steel- Laser Welding Machine for Aluminum

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Can you laser weld aluminum to steel

Fiber continuous laser welding equipment aluminum alloy doors and windows processing technology

There are a lot of difficulties in the traditional aluminum alloy welding process. For example, the thermal conductivity of aluminum alloy is very high, which is about 2-4 times that of steel, and the heat resistance is very poor. Generally, aluminum alloys are not resistant to high temperature and have a large expansion coefficient, which is easy to produce Welding deformation, welding crack tendency is also obvious. These seemingly inconspicuous flaws often bring unexpected troubles, and the continuous laser welding machine produced by laser welding technology can easily solve these small flaws, thus effectively ensuring the integrity of the processed parts and not being damaged.

China building materials network pictures aluminum alloy doors and windows
Fiber laser welding machine is a kind of laser welding equipment that couples high-energy laser beam into optical fiber, after long-distance transmission, collimates into parallel light through collimating mirror, and then focuses on the workpiece for welding. For parts that are difficult to access for welding, the implementation of flexible transmission non-contact welding has greater flexibility. Currently used in sheet metal manufacturing, battery sealing, auto parts and other industries. The laser beam of the optical fiber transmission laser welding machine can realize time and energy splitting, and can process multiple beams at the same time, providing conditions for more precise welding.

The aluminum alloy laser welding machine adopts a new type of laser welding technology and is a technological product of the new era. A high degree of automation can not only achieve high efficiency, easy operation, good welding effect, etc., but also greatly reduce labor costs and improve product competitiveness! It can be said that the welding work of laser welding aluminum profiles is perfect, and it is also the result of long-term practice and improvement of laser welding technology!

aluminum laser welding machine

Fiber Laser Welding Equipment
The optical fiber continuous laser welding machine of SIEME Laser has fast welding speed, small deformation, and no air bubbles. It can use non-contact welding for parts that are difficult to access for welding, and the operation is flexible; the energy distribution of welding spots is even, ensuring the beauty and use of welding workpieces. Performance; it can be processed and produced by multi-beams, which can realize mass production of products, and shows the advantage of high output ratio in the same series of products.

Nowadays, aluminum alloy products are not uncommon. Aluminum alloy doors and windows, pots and pans, etc. are all produced with aluminum materials. The ordinary use of aluminum alloys also promotes the development of continuous welding technology for aluminum alloys, which is equivalent to the continuous laser welding machine technology also entering the market field of aluminum applications.

Muti Function Laser Welding Machine

Laser Welding Machine for Aluminum

Laser beam welding is one of our most popular services for welding aluminum. The process is ideal for fast, clean welds. The heat affected zone is minimized and weld penetration can range up to 0.25” in aluminum.

Can you laser weld aluminum to steel
Application of Handheld Laser Welder in Bathroom Industry

Application of Handheld Laser Welder in Bathroom Industry

Not only can it weld common carbon steel and stainless steel, but it can also weld materials that are difficult to weld by traditional welding, such as aluminum, copper and other metal materials.

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Application of laser welding machine in kitchen appliances

Application of laser welding machine in kitchen appliances

Lasers can be found in almost all electrical appliances. In the production process of the microwave oven liner, laser welding technology is used to make the weld seam of the liner smooth and beautiful, and at the same time, the welding speed is fast, which can significantly improve the work efficiency of the liner welding. The production of range hoods also makes full use of laser welding technolo

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What industris can adopt Handheld Fiber laser welding machine

What industris can adopt Handheld Fiber laser welding machine

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A Laser welding is one of the important aspects of the application of laser processing technology, and it is the most watched and most promising welding technology in the 21st century. Compared with traditional welding methods, laser welding has many advantages, such as higher welding quality and faster efficiency. At present, laser welding technology has been widely used in manufacturing, powder metallurgy, automobile industry, electronics industry, biomedicine and other fields. First, the principle of laser welding Laser welding belongs to fusion welding, using laser beam as the welding heat source. The welding principle is: the active medium is excited by a specific method to make it oscillate back and forth in the resonant cavity, and then converted into a beam of stimulated radiation. When the beam and the workpiece are in contact with each other , its energy is absorbed by the workpiece, and welding can be performed when the temperature reaches the melting point of the material. △Laser welding principle According to the formation mechanism of welding pool, laser welding has two basic welding mechanisms: heat conduction welding and deep penetration (small hole) welding. The heat generated during heat conduction welding diffuses to the inside of the workpiece through heat transfer, melting the surface of the weld seam, and basically does not produce vaporization. It is often used for welding low-speed thin-walled components. Deep penetration welding vaporizes the material and forms a large amount of plasma. Due to the high heat, small holes will appear at the front of the molten pool. Deep penetration welding can completely penetrate the workpiece, and the input energy is large and the welding speed is fast. It is currently the most widely used laser welding mode. Second, the main process parameters of laser welding There are many process parameters that affect the quality of laser welding, such as power density, laser pulse waveform, defocus, welding speed and auxiliary blowing shielding gas. 1. Laser power density Power density is one of the most critical parameters in laser processing. With a higher power density, the surface layer can be heated to the boiling point within microseconds, resulting in a large amount of vaporization. Therefore, high power density is very beneficial for material removal processes such as drilling, cutting, and engraving. For a lower power density, it takes several milliseconds for the surface temperature to reach the boiling point. Before the surface layer vaporizes, the bottom layer reaches the melting point, which is easy to form a good fusion weld. Therefore, in heat conduction laser welding, the power density is in the range of 104-106W/cm2. 2. Laser pulse waveform The laser pulse waveform is not only an important parameter to distinguish material removal from material melting, but also a key parameter to determine the volume and cost of processing equipment. When the high-intensity laser beam hits the surface of the material, 60-90% of the laser energy will be reflected and lost on the surface of the material, especially gold, silver, copper, aluminum, titanium and other materials with strong reflection and fast heat transfer. During a laser pulse signal, the reflectivity of the metal changes with time. When the surface temperature of the material rises to the melting point, the reflectance will drop rapidly, and when the surface is in a molten state, the reflectance stabilizes at a certain value. △Laser welding pulse waveform of different materials 3. Laser pulse width Pulse width is an important parameter for pulsed laser welding. The pulse width is determined by the penetration depth and the heat-affected zone. The longer the pulse width, the larger the heat-affected zone, and the penetration depth increases with the 1/2 power of the pulse width. However, increasing the pulse width will reduce the peak power, so increasing the pulse width is generally used for heat conduction welding, and the weld size formed is wide and shallow, especially suitable for lap welding of thin and thick plates. However, lower peak power results in excess heat input, and each material has an optimum pulse width that maximizes penetration. 4. Defocus amount Laser welding usually requires a certain amount of defocus, because the power density in the center of the spot at the laser focus is too high, and it is easy to evaporate into holes. On each plane away from the laser focus, the power density distribution is relatively uniform. There are two ways to defocus: Positive and negative defocus. If the focal plane is above the workpiece, it is positive defocus, otherwise it is negative defocus. According to the theory of geometric optics, when the distance between the positive and negative defocus planes and the welding plane is equal, the power density on the corresponding planes is approximately the same, but in fact the obtained molten pool shape is somewhat different. Wh

A The handheld laser welding machine has become a new industrial technology favored by the market due to its advantages of simple operation, high efficiency, and smooth and beautiful weld seam. Handheld laser welding machines are widely used, but many people want to ask what materials the handheld laser welding machine can weld. 1. Stainless steel What materials can the handheld laser welding machine weld The stainless steel of the handheld laser welding machine has a high coefficient of thermal expansion, and it is easy to overheat during welding. When the heat-affected zone is slightly larger, it can cause serious deformation problems. Handheld laser welding machines generate less heat throughout the welding process. In addition, stainless steel has relatively low thermal conductivity, high energy absorption rate and high melting efficiency, and a well-formed weld can be obtained after welding. 2. Carbon steel Ordinary carbon steel can be directly welded by hand-held laser welding, which is comparable to stainless steel welding with a small heat-affected area. However, when welding medium and high carbon steel, the residual temperature is still relatively high, so preheating before welding and heat preservation after welding are required to eliminate stress and avoid cracks. Here, we can say cold welder. Medium to high carbon steels can be slowly welded or repaired with cast iron wire cold welding, and cold welders teach hand-held laser welding to be better at post-weld heat residue. 3. Die steel The handheld laser welding machine can be used to weld various types of die steel, and the welding effect is very good. 4. Aluminum and aluminum alloy Aluminum and aluminum alloys are highly reflective materials and porosity may develop in the weld pool or root during welding. Compared with previous metal materials, aluminum and aluminum alloys have higher requirements on parameters, but as long as proper welding parameters are selected, welds with the same mechanical properties as the base metal can be obtained. 5. Copper and copper alloys Copper has very strong thermal conductivity, and it is easy to produce incomplete penetration and partial incomplete fusion during welding. Typically, during the welding process, the copper material is heated to aid in the welding. Here I am talking about thin copper materials. Because of its energy concentration and fast welding speed, it can be directly welded by hand-held laser welding. The high thermal conductivity of copper has little effect on it. 6. Welding between different materials The handheld laser welding machine can be used between dissimilar metals such as copper-nickel, nickel-titanium, copper-titanium, titanium-molybdenum, brass-copper, and low-carbon steel-copper. , laser welding can be carried out under certain conditions (gas or temperature).

A Laser welding machines are generally used for tailor welding and repair welding of metal materials. The working principle of laser welding is to use high-energy laser pulses to heat a small area of the material. The high-temperature energy diffuses from the surface of the material to the inside, and forms a specific molten pool after melting. The material in the whole process is in a high temperature state, so how should we use the laser welding machine safely? Precautions for safe use of laser welding machine 1. During the operation, if there is an emergency, such as water leakage or abnormal sound of the laser, it is necessary to immediately press the emergency stop button and quickly cut off the power supply. 2. The external circulating water switch of laser welding must be turned on before operation. Since the laser system adopts water cooling mode and the laser power supply adopts air cooling mode, if the cooling system fails, it is strictly forbidden to start the machine. 3. It is strictly forbidden to touch all circuit components in the machine while working. When the laser welding machine is working, the circuit is in a state of high voltage and strong current. Untrained personnel are prohibited from operating the machine. 4. It is strictly forbidden to use the eyes to scan the laser directly when the laser is working, so as to avoid eye injury. It is forbidden to use external equipment to reflect the laser light when the laser light is working. 5. Do not disassemble any parts of the machine at will, and do not weld when the safety door of the machine is open, and do not aim the laser head at the equipment parts. 6. Do not place flammable and explosive materials in the laser light path or where the laser beam can be irradiated, so as not to cause fire and explosion.

A Laser welding machines are widely used in the welding of thin-walled materials such as stainless steel and carbon steel, such as water tanks, mold machinery, decorative advertisements, kitchen utensils and bathrooms, jewelry, door and window frames, electronic appliances, household items, sheet metal processing, auto parts, etc. Related areas. According to different usage methods, laser welding machines are divided into handheld laser welding machines and desktop laser welding machines. Limitations of handheld laser welding machines 1. High machine cost: Compared with traditional welding equipment, laser welding machines are expensive and require a higher cost, and the more functions the laser welding machine has, the higher the price. 2. High environmental requirements: Sparks may appear when welding with a handheld laser welding machine, and strict safety protection measures must be taken, such as wearing goggles to ensure the safety of the working environment and operators. 3. The operation is difficult: the operation mode of the hand-held laser welding machine is hand-held, and long-term work will cause greater arm pressure. Advantages of handheld laser welding machine 1. The hand-held laser welding machine uses a hand-held welding gun, which overcomes the limitation of the workbench space. There is no limit when welding, and it can meet the welding needs of multi-angle and multi-directional, and complete the position of the workpiece that cannot be welded by automatic welding. Small space, high flexibility. 2. The front end of the welding torch of the handheld laser welding machine is usually equipped with a copper nozzle. During the welding process, the copper nozzle can be next to the workpiece, reducing the weight of the welding torch and increasing the stability of welding. The shape is moved and welded. 3. The hand-held laser welding machine has extremely high precision, the laser beam focusing diameter is small, and the welding process has little impact on the surrounding materials, which avoids the material damage that is easy to occur in the traditional welding process, and can also reduce the follow-up for more fragile materials. process to improve production efficiency. 4. The hand-held laser welding machine has fast welding speed and high welding efficiency. This advantage is particularly prominent in the production of mass products; in addition, the hand-held laser welding machine can also adapt to the automated production line and realize fully automated operations. It can not only guarantee product quality, It can also greatly shorten the product production cycle.

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