Fiber Laser Welding Machine manufacturers The working principle of fiber laser welding machine Fiber laser welder uses high-energy laser pulses to locally heat the material in a small area. The energy of the laser radiation diffuses into the material through heat conduction, and the material is melted to form a specific molten pool. Classification of laser welding machines According to its working method, it can often be divided into laser mold welding machines (manual laser welding equipment), automatic laser welding machines, jewelry laser welding machines, laser spot welding machine, optical fiber transmission laser welding machine, galvanometer welding machine, handheld welding machine Etc. Handheld type Desktop-type Robot type Fiber Laser welder features Fiber laser welding machine is a new type of welding method, mainly for the welding of thin-walled materials and precision parts. It can realize spot welding, butt welding, stitch welding, sealing welding, etc. with a high aspect ratio, small weld width, and small heat-affected zone, small deformation, fast welding speed, smooth and beautiful welding seam. no need to handle or simple processing after welding, high welding seam quality, no air holes, precise control, small focus spot, high positioning accuracy, easy to realize automation. Products Advantage For welding thin stainless-steel plates, iron plates, galvanized plates, and other metal materials, it can perfectly replace traditional argon arc welding, carbon dioxide shielded welding, electric welding, and other processes. 1. Simple operation: Hand-held welding machines are easy to use, and the operator does not need to be trained for a long time to complete the welding. 5. Energy efficiency conversion: The laser photoelectric conversion efficiency reaches 30%. 2. Welding efficiency: The welding speed is fast. 6. Convenient and flexible to use: The handheld welding machine has a wide range of use. 3. No consumables for welding: Welding can be completed without filling the welding wire. 7. Wobble head: Large light spot, suitable for welding a variety of products. 4. Welding effect: The area affected by welding is very small, and the deformation of the workpiece is very small. 8. The welding seam does not need to be polished: The welding is smooth and the welding seam is beautiful, there are fewer subsequent polishing processes Application areas: Complicated and irregular welding processes in industries such as cabinets, kitchens and bathrooms, stair elevators, shelves, door and window guardrails, communication sheet metal, shells, fans, stainless steel fixtures, etc. Industrial products Daily use Cabinet Kitchenware Elevator Power grid Operation method: Manual welding, it can be matched with simple fixtures, flexible and simple operations. Welding Samples Technical Parameters Laser power 1000W/1500W/2000W Laser wavelength 1064 NM Fiber length Standard 8-10M supports up to 15M Way of working Continuous/ Modulation Speed range of welding machine 0~120 mm/s Cooling water machine Industrial constant temperature water tank Working environment temperature range 15~35 鈩? Working environment humidity range <70% without condensation Recommended welding thickness 0.5-5mm Welding gap requirements 鈮?.5mm Operating Voltage AV220V Welding penetration data of handheld laser welding machine The thickness of the welding material that can be welded by the welding equipment, the thickness of the material, and the power of the welding equipment are closely related, and the size of the laser power depends on the thickness of the weldable material. stainless steel carbon steel Aluminum Brass The power of the handheld laser welding machine is from 1000W to 2000W. The welding power determines the thickness of the material that can be welded. We know that the thin plate of the handheld laser welding machine has certain advantages. How about welding thick plates? The following is a summary of the relationship between the power size and the thickness of the welding material for everyone: Power / Material stainless steel carbon steel Iron Aluminum and alloy material 1000w 0.5-3mm 0.5-3mm 0.5-3mm 0.5-2mm 1500w 0.5-5mm 0.5-5mm 0.5-5mm 0.5-3mm 2000w 0.5-6mm 0.5-6mm 0.5-6mm 0.5-5mm Handheld laser welding machine: The Ultimate FAQ Guide 1. What is laser welding? 2. What is a handheld laser welding machine? 3. What are the main components of the hand-held laser welding machine? 4. What are the advantages of a handheld laser welding machine? 5. What are the limitations of handheld laser welding machines? 6. Can the hand-held laser welding machine cut? 7. What metals can the hand-held laser welding machine weld? 8. What is the use process of the hand-held laser welding machine? 9. How does the hand-held fiber laser welding machine work? 10. How much is the handheld laser welding machine? 11. How to choose a suitable handheld laser welding machine? 12. What is the difference between a fully automatic laser welding machine and a handheld laser welding machine? 13. What is the difference between hand-held laser welding machine and argon arc welding? 14. What is the difference between hand-held and automatic laser welding machines? 15. Is it safe to use a handheld laser welding machine? 16. How many millimeters of material can the hand-held laser welding machine weld? 17. Can the hand-held laser welding machine weld circular elbows? 18. What are the common faults of hand-held laser welding machines and how to deal with them? 19. How to maintain the handheld laser welding machine? 20. What are the power of the hand-held laser welding machines? 21. FAQs during the use of the handheld laser welding machine? 22. What are the main components of the hand-held laser welding machine? 23. Several details need to be paid attention to when using the hand-held laser welding machine. 24. How to choose shielding gas when laser welding? 1.What is laser welding? Laser welding is the use of high-energy laser pulses to locally heat the material in a small area. The energy of the laser radiation diffuses into the interior of the material through heat conduction, and the material is melted to form a specific molten pool. It is a new type of welding method, mainly for the welding of thin-walled materials and precision parts, and can realize spot welding, butt welding, stitch welding, sealing welding, etc. Small deformation, fast welding speed, smooth and beautiful welding seam, no need or simple treatment after welding, high welding seam quality, no pores, precise control, small focusing spot, high positioning accuracy, and easy automation. 2.What is a handheld laser welding machine? Handheld fiber laser welding machine series equipment is a high-efficiency and precise welding method using a high-energy-density laser beam as a heat source. The handheld laser welding machine is mainly composed of a laser unit and a welding unit, while taking into account the flexibility, efficiency and high weld quality of laser welding. It can effectively weld carbon steel, stainless steel, galvanized sheet and other metal materials, suitable for tailor welding, stitch welding, inner and outer fillet welding, arc welding, and irregular shape welding. 3.What are the main components of the hand-held laser welding machine? 1. Control system The main function is to input parameters and display and control the parameters in real time, interlock, protect and alarm between programs. 2. Laser Laser is an important part of hand-held laser welding equipment, mainly providing the light energy required for processing. The requirements for the laser are stable and reliable, and can operate normally for a long time. For welding, the transverse mode of the laser is required to be low-order mode or fundamental mode, and the output power (continuous laser) or output energy (pulsed laser) can be precisely adjusted according to the processing requirements. 3. Optical system The optical system is used to transmit and focus the light beam. When carrying out straight-line transmission, the channel is mainly air. When carrying out high-power or high-energy transmission, shielding must be adopted to avoid harm to people. In some advanced equipment, the laser does not output externally until the laser output shutter is opened. Lenses are often used for focusing in low-power systems, and reflective focusing mirrors are generally used in high-power systems. 4. Laser welding head The swing welding head integrates laser control, galvanometer control, laser safety lock and excellent process algorithm; the original database can store rich process data, which can be retrieved and used in real time; it has multi-point shooting function, suitable for spot welding. The beam can be dithered by 0~4mm width, which is very suitable for welding with irregular welds; the beam can be dithered to improve the penetration problem and welding surface quality of traditional laser hand-held welding. 5. Cooling system The cooling system provides cooling function for the laser generator, and is generally equipped with a water circulation chiller with a power of 1-4 kw. 4.What are the advantages of a handheld laser welding machine? 1. Hand-held water-cooled welding gun, ergonomic design, flexible and convenient, longer welding distance, can weld any part of the workpiece and angle. 2. Simple and easy to learn, no professional welding master is needed, and ordinary workers can start work after a short training. Long-term use can greatly save processing costs, and the electro-optical conversion efficiency is high and energy consumption is low. 3. It can realize welding at any angle, and can weld workpieces with various complex welds and irregular shapes of large workpieces to realize welding at any angle. 4. The laser beam quality is good, the welding speed is fast, the welding seam is firm and beautiful, and it brings efficient welding effect to users. 5. The welding area has little heat effect, is not easy to deform, turns black, and has traces on the back. The welding depth is large, the melting is sufficient, and it is firm and reliable. 6. The touch switch has body temperature, and high safety, the welding tip is only effective when the touch switch touches the metal. 5.What are the limitations of handheld laser welding machines? 1. The hand-held laser welding machine needs to be held by hand for a long time, which will cause arm fatigue. 2. It is not practical for the welding of large originals, and the scope of use is severely limited. 3. It is not convenient to carry at any time. 4. The price is a bit expensive. 6.Can the hand-held laser welding machine cut? Can. We will provide how to cut the video. 7.What metals can the hand-held laser welding machine weld? 1. Die steel The hand-held laser welding machine is suitable for welding various types of die steel, and the welding effect is good. 2. Carbon steel Carbon steel is welded by hand-held laser welding machine, and the effect is good. The quality of welding depends on the content of impurities. In order to obtain good weld quality, preheating is required for carbon content above 0.25%. When welding steels with different carbon content to each other, the welding torch can be slightly biased to the side of the low carbon material to ensure the quality of the joint. Since the heating rate and cooling rate of the laser welding machine are very fast, when welding carbon steel. Weld crack and notch susceptibility also increases with increasing carbon content. Both medium and high carbon steels and common alloy steels can be laser welded well, but preheating and post-weld treatment are required to relieve stress and avoid cracks. 3. Alloy aluminum Laser welding of low-alloy high-strength steels can obtain joints with mechanical properties equivalent to the base metal as long as the selected welding parameters are appropriate. 4. Stainless steel In general, stainless steel welding is easier to obtain high-quality joints than conventional welding. Due to the high welding speed and small heat affected zone of laser welding, the overheating phenomenon and the adverse effect of the large linear expansion coefficient during welding of stainless steel are alleviated, and the welding seam has no defects such as pores and inclusions. Compared with carbon steel, stainless steel is easier to obtain deep penetration narrow welds due to its low thermal conductivity, high energy absorption rate and melting efficiency. Welding thin plates with low-power laser welding can obtain joints with good appearance and smooth and beautiful welds. 5. Copper and copper alloys Soldering copper and copper alloys is prone to problems of lack of fusion and penetration, so a heat source with concentrated energy and high power should be used and preheating measures should be used; when the thickness of the workpiece is thin or the structural rigidity is small, and there is no measure to prevent deformation, welding It is easy to produce large deformation after welding, and when the welded joint is constrained by a large rigidity, it is easy to produce welding stress; when welding copper and copper alloys, it is easy to produce hot cracks; porosity is a common defect when welding copper and copper alloys. 8.What is the use process of the hand-held laser welding machine? Welding method of hand-held laser welding machine: 1. Preparations before starting 1. Check the power supply of the laser welding machine and whether the water circulation is normal 2. Check whether the gas connection of the equipment in the machine is normal 3. Check that the surface of the machine is free of dust, spots, oil, etc. 2. Start 1. Turn on the power and turn on the main power switch 2. Turn on the water cooler, laser generator, etc. in sequence 3. Open the argon valve and adjust the gas flow 4. Enter the current work parameters to be executed 5. Perform welding operations 3. Operating procedures: 1. Check whether each part of the welding machine is working normally Before welding, check whether all parts of the laser welding machine work normally. After the operation, check the welding machine and the workplace to eliminate hidden dangers and ensure safety and no accidents. 2. Avoid fire caused by laser irradiation Direct irradiation or strong reflection of the laser beam will cause combustibles to burn, resulting in fire. In addition, there are thousands to tens of thousands of volts of high-voltage electricity in the laser, which will be injured by electric shock. Therefore only trained personnel are allowed to operate the laser welding machine. The optical path system of the laser must be fully enclosed with metal to prevent direct irradiation, and the laser welding table should also be shielded to prevent the irradiation of radiation. 3. Laser damage to eyes should be avoided The power density of the laser used in laser welding machine welding is very high, and the beam is very thin, which can easily cause damage to people's eyes and skin. Therefore, attention should be paid to eye protection during laser welding operations. On-site operators must wear laser-specific protective glasses. 4. Avoid laser burns on the skin Directly irradiating the skin with the laser will cause burns to the skin, and the long-term effects of diffuse reflection will also lead to skin aging, inflammation and skin cancer lesions of the operator. Field operators need to wear overalls to reduce the impact of diffuse reflection. 9.How does the hand-held fiber laser welding machine work? Laser welding is to use high-energy laser pulses to locally heat the material in a small area. The energy of the laser radiation diffuses into the interior of the material through heat conduction, and the material is melted to form a specific molten pool. 10.How much is the handheld laser welding machine? At present, there are many brands of handheld fiber laser welding machines on the market, but the quality is uneven and the price is also different. So how much does a hand-held fiber laser welding machine cost? In fact, the price ranges from US$6,000 to US$12,000, mainly depending on the hardware configuration and power of the device to determine the price, and the price is not as cheap as possible. Everyone should understand the principle of getting what you pay for. Hardware configuration and price difference: Handheld laser welding machine is mainly composed of laser, welding head, power supply, chiller, sheet metal cabinet, industrial computer, etc. The difference in brand quality of these accessories is the main reason for the price difference of handheld laser welding machine. Different models have different prices. The main difference is the laser power and the welding head. At present, the most used laser power is 1000W/1500W/2000W. The welding head is divided into swing head, upper wire feeding, and lower wire feeding. You can choose according to your own needs, the price may vary depending on the choice. Prices vary from manufacturer to manufacturer. Different manufacturers have different brand positioning, laser technology used, laser process, labor cost, etc. Due to the difference in the quality of the manufactured products and the welding process, the price of the laser welding machine between them will also be different. Different services have different prices. Generally speaking, when choosing a factory, whether the after-sales service is comprehensive, the warranty period and the response speed of the after-sales service will directly affect the satisfaction of consumers. When choosing a fiber laser welding machine manufacturer, the relevant provisions of laser welding machine warranty and after-sales service can protect the rights and interests of consumers. Therefore, high-quality after-sales service can be an important reference in the process of selecting a manufacturer. 11.How to choose a suitable handheld laser welding machine? With the rapid development of the laser industry, there are various brands of laser welding machine products on the market, and the quality is uneven. When consumers buy a laser welding machine, they often have no idea where to start. How should we choose a suitable laser welding machine? The following will explain to you by the laser gentleman: When we choose a laser welding machine, we can consider the following aspects 1. Confirm whether the product is suitable for welding with a laser welding machine When we choose a laser welding machine, we must confirm whether our products are suitable for welding with a laser welding machine. Now most laser welding machine manufacturers provide free proofing services, and we must let the other party proof before purchasing. In this way, you can confirm whether the laser welding machine can meet your own requirements. 2. Consider the power of the laser welding machine The laser is the core of the laser equipment, the higher the power, the higher the price. Because the higher the power, the higher the requirements for the laser rod and the cooling system; generally, the deeper the welding depth is required, the higher the power of the corresponding laser welding machine. Three, to consider the corresponding configuration and use The configuration of the laser welding machine involves many aspects. The configuration of the laser welding machine for different purposes is different, such as the mold welding of the welding mold, the jewelry welding of the welding jewelry, and the galvanometer welding and the fiber transmission laser welding in the automatic welding machine. Machines, etc., the configuration of the equipment is different, the price will naturally be different. 4. Make a reasonable choice according to your budget and hobbies Some people are more loyal to foreign brands, and the price will naturally be higher. Since there is no tariff problem, the price of domestic laser welding machines will be relatively low. Now the domestic laser technology has also reached international standards, and after-sales problems will be dealt with in a more timely and convenient manner, so it will be more secure. We can choose according to our budget and preferences. After considering the above four aspects, I believe that when choosing a laser welding machine, everyone will not be at a loss. 12.What is the difference between a fully automatic laser welding machine and a handheld laser welding machine? As the name suggests, manual laser welding machine is a welding equipment that needs manual operation. This welding equipment can perform laser welding of long-distance and large workpieces. The heat-affected area is small during welding, and it will not cause deformation, blackening, and traces on the back of the workpiece. The welding depth is large, the welding is firm, the melting is sufficient, and there is no depression at the joint between the convex part of the molten material in the molten pool and the substrate. The automatic laser welding machine is an automatic welding equipment that uses high-energy laser pulses to locally heat the material in a small area. The energy of the laser radiation diffuses into the interior of the material through heat conduction, and the material is melted to form a specific molten pool. Mainly for the welding of thin-walled materials and precision parts, it can realize spot welding, butt welding, stitch welding, sealing welding, etc. It has the advantages of small welding seam width, fast welding speed, high welding seam quality, no pores, precise control, and positioning accuracy. High, easy to achieve automation and other characteristics. The automatic laser welding machine is set on the software to automatically weld according to the set procedure; and the manual laser welding machine is to manually move the trajectory of the welding torch to achieve welding. 13.What is the difference between hand-held laser welding machine and argon arc welding? 1. Different application fields Handheld laser welding: In addition to aviation, machinery, electronics, communications, power, chemical, automobile manufacturing and other large industries, handheld laser welding machines are also suitable for sealing welding of lithium batteries, metallurgy, sensors, electrical appliances and other industries. TIG welding: TIG welding is suitable for welding non-ferrous metals and alloy steels that are easily oxidized; it is suitable for single-sided welding and double-sided forming, such as bottom welding and pipe welding. Second, the principle is different Hand-held laser welding: The hand-held laser welding machine uses high-energy laser pulses to locally heat the material in small areas. The energy of the laser radiation diffuses into the interior of the material through heat conduction, and the material is melted to form a specific molten pool. It is a new type of welding method, mainly for thin-walled materials, precision parts welding, and can realize spot welding, butt welding, stitch welding, sealing welding, etc., with high depth ratio, small weld width, small heat affected zone, and deformation Small size, fast welding speed, smooth and beautiful welding seam, no need or simple treatment after welding, high welding seam quality, no pores, precise control, small focusing spot, high positioning accuracy, and easy automation. Argon arc welding: On the basis of the principle of ordinary arc welding, argon gas is used to protect the metal welding material, and the welding material is melted into a liquid state on the substrate to be welded through high current to form a molten pool, so that the metal to be welded and the welding material are welded. A welding technology that achieves metallurgical bonding. Due to the continuous supply of argon gas during high-temperature fusion welding, the welding material cannot be contacted with oxygen in the air, thereby preventing the oxidation of the welding material. 3. Different technical applications Handheld Laser Welding: 1. Small heat-affected zone for hand-held laser welding; 2 The welding speed is fast, twice that of argon arc welding; 3 Wide range of applications: kitchen cabinets, stair elevators, shelves, advertisements, ovens, stainless steel door and window guardrails, distribution boxes, stainless steel home furnishing, etc. TIG welding: 1. The heat affected area of argon arc welding is large; 2. The degree of harm to the human body caused by argon arc welding is higher, the current density of argon arc welding is large, the light emitted is relatively strong, and the ultraviolet radiation generated by its arc; 3. It is difficult to weld metals with low melting point. 14.What is the difference between hand-held and automatic laser welding machines? The automatic laser welding machine is set on the software to automatically weld according to the set procedure; and the manual laser welding machine is also called spot welding, which is manually enlarged to the screen for visual spot welding. Compared with the automatic equipment deployment, the manual hand-held laser welding machine has a much lower production efficiency, but for the production workshops with sporadic processing or non-large-scale processing and welding, manual laser welding is more advantageous, and there is no need to set up and debug fully automatic The laser welding platform and the environmental requirements of the space occupied, and the most important point is that the products welded in small workshops are diverse and the shape is not firmed, so manual laser welding can meet the needs of such production and has better compliance. 15.Is it safe to use a handheld laser welding machine? One of the indispensable equipment in the field of welding is mainly based on the principle of laser radiation for welding, so there are always people who worry about its safety during use. Laser is the light energy radiation emitted by excitation, which is a High intensity light. The laser light emitted by the laser source is generally inaccessible and invisible, and can be considered as harmless to the body. However, the laser welding process will cause ionizing radiation and stimulated radiation. This induced radiation has a great impact on the eyes and body. Therefore, we must stay away from the welding site when welding. Although the radiation of the laser welding machine to the human body is basically within the safe range, non-professionals should not touch the laser source. The laser is an invisible and high-energy beam. Once contacted, it is very dangerous. In particular, the damage to the eyes is the greatest, so in the case of long-term viewing of the light source, be sure to wear a radiation protection goggles. In fact, no matter whether there is radiation effect or not, as long as we wear respiratory protective gear, radiation protective clothing, goggles, pay attention to ventilation, pay attention to the inhalation of dust and metal particles, and take protective measures during use, we can avoid injury. Take responsibility for your own body and personal safety. 16.How many millimeters of material can the hand-held laser welding machine weld? Power / Material stainless steel carbon steel Iron Aluminum and alloy material 1000w 0.5-3mm 0.5-3mm 0.5-3mm 0.5-2mm 1500w 0.5-5mm 0.5-5mm 0.5-5mm 0.5-3mm 2000w 0.5-6mm 0.5-6mm 0.5-6mm 0.5-5mm 17.Can the hand-held laser welding machine weld circular elbows? Yes, but it needs to be equipped with a gripper that can rotate automatically. The laser welding fixture is mainly used to fix the workpiece to be welded, so that it can be repeatedly loaded and unloaded, and repeated positioning, so as to facilitate automatic laser welding. Therefore, the fixture is one of the indispensable equipment in laser welding production, especially in batches. In the production of laser welding, whether the fixtures are designed in place will directly affect the efficiency and yield of production. We have a large number of professional supporting designers who design laser welding fixture solutions for customers, and provide demonstrations, so that customers can understand at a glance the entire welding program. 18.What are the common faults of hand-held laser welding machines and how to deal with them? 1. The reason why the output power of the laser decreases after the handheld laser welding machine is used for a period of time: 鈶燱hether the laser resonator has changed: fine-tune the front and rear resonator mirrors to make the output spot the best; 鈶hether there is any contamination of the total reverse and the output diaphragm; 鈶ondensation is formed on the surface of the laser rod of the handheld laser welding machine due to the temperature difference; 2. The laser output power of the handheld laser welding machine is normal, but the laser beam cannot play the role of marking: 鈶?Whether the adjustment of the optical path system is accurate; 鈶hether the acousto-optic switch can play a switching role; 3. Reasons why the hand-held laser welding machine cannot achieve the expected marking depth: 鈶燱hether the laser output power meets the requirements; 鈶hether the turn-off power of the acousto-optic switch meets the requirements; 鈶?Whether the optical path adjustment is accurate; 鈶hether the workpiece surface is on the focal plane; 19.How to maintain the handheld laser welding machine? When we use hand-held laser welding machine equipment, if there is no precaution or insufficient precaution, it will cause direct or indirect injury to the operator. In order to ensure the safety of staff, it is necessary to understand some common sense of protection and safety management. 1. Keep the laser, the fuselage and the surrounding environment clean, orderly and free of oil. Workpieces and plates are stacked in an orderly manner. 2. Non-professionals are prohibited from disassembling, repairing and modifying the equipment when there is a problem with the equipment. 3. When using gas cylinders, avoid crushing the welding wires to avoid leakage accidents. The use and transportation of gas cylinders shall comply with the gas cylinder monitoring regulations. Do not expose gas cylinders to direct sunlight or near heat sources. When opening the bottle valve, the operator must stand on the side of the bottle mouth. Fourth, keep the circulating water clean. Regularly clean the water tank of the laser welding machine and replace it with clean deionized or pure water. 5. Before starting the machine, make sure that the water level in the water tank is within the marked position. Check the water level of the water tank every week, and change the water in the water tank as required, otherwise the equipment may not work properly or even damage the equipment.鈥侰lean the surface of the water tank as required, otherwise it may cause electric leakage and cause electric shock. 20.What are the power of the hand-held laser welding machines? The main difference is the laser power and the welding head. At present, the most used laser power is 1000W/1500W/2000W. The welding head is divided into swing head, upper wire feeding, and lower wire feeding. You can choose according to your own needs, the price may vary depending on the choice. 21.FAQs during the use of the handheld laser welding machine? 1. The protective gas is opened too much Solution: adjust the air flow of the shielding gas 2. The focusing lens is damaged or polluted Solution: Replace or clean the focusing lens and protective lens. 3. The laser is not output from the center of the copper gas nozzle under the focusing head Solution: Adjust the 45-degree reflective diaphragm to make the laser output from the center of the gas nozzle 4. The resonator diaphragm of the laser is damaged or polluted Solution: Replace or clean the resonator reflective diaphragm. 5. The shutter is not fully opened Solution: Check and add lubricating oil to the optical gate connector to make the connector mechanically smooth 6. The service life of the xenon lamp is over Solution: Check and clean the old lamp or replace the xenon lamp with a new one. 7. The cooling water is polluted or the cooling water has not been replaced for a long time Solution: replace the cooling water and clean the UV filter glass tube and xenon lamp 8. The defocus of the focusing lens is too large Solution: adjust the defocus amount to the position close to the focus (but no splashes are allowed) 9. Main optical path laser offset Treatment method: adjust the main optical path full-reflection and semi-reflection film, use image paper to check and adjust the light spot Application fields of handheld laser welding machine: automobile and parts industry, motorcycle and electric vehicle industry, machinery industry, pressure vessel, boiler manufacturing, hardware processing, etc. The above is the general content of the common problems and solutions of handheld laser welding machines. I believe that after reading it, you will have a certain improvement in emergency handling of some special unexpected situations. 22.What are the main components of the hand-held laser welding machine? 1. Control system The main function is to input parameters and display and control the parameters in real time, interlock, protect and alarm between programs. 2. Laser Laser is an important part of hand-held laser welding equipment, mainly providing the light energy required for processing. The requirements for the laser are stable and reliable, and can operate normally for a long time. For welding, the transverse mode of the laser is required to be low-order mode or fundamental mode, and the output power (continuous laser) or output energy (pulsed laser) can be precisely adjusted according to the processing requirements. 3. Optical system The optical system is used to transmit and focus the light beam. When carrying out straight-line transmission, the channel is mainly air. When carrying out high-power or high-energy transmission, shielding must be adopted to avoid harm to people. In some advanced equipment, the laser does not output externally until the laser output shutter is opened. Lenses are often used for focusing in low-power systems, and reflective focusing mirrors are generally used in high-power systems. 4. Laser welding head The swing welding head integrates laser control, galvanometer control, laser safety lock and excellent process algorithm; the original database can store rich process data, which can be retrieved and used in real time; it has multi-point shooting function, suitable for spot welding. The beam can be dithered by 0~4mm width, which is very suitable for welding with irregular welds; the beam can be dithered to improve the penetration problem and welding surface quality of traditional laser hand-held welding. 5. Cooling system The cooling system provides cooling function for the laser generator, and is generally equipped with a water circulation chiller with a power of 1-4 kw. 23.Several details need to be paid attention to when using the hand-held laser welding machine. Today, I will introduce some precautions in the daily use of handheld laser welding machines. First of all, like the argon arc welding machine, it is also necessary to wear radiation protection glasses, masks, and safety protective clothing to ensure the safe production of the staff. machine) are used in common to prevent current backflow from affecting laser components. During use, it should be noted that the welding head of the handheld laser welding machine cannot be aimed at the body. Do not place the welding head on the ground, and pay attention to dust prevention. During the welding process, pay attention to the bending radius of the optical fiber bellows that is not too small, so as not to burn the optical fiber. In case of any unexpected situation, press the emergency stop button immediately. If you stop working temporarily, please click «Stop» to enter the standby state, or if you stop working after work, please click «Stop» to enter the standby state and then turn off the device. Everyone needs to pay attention to the antifreeze of the laser welding machine when using the hand-held laser welding machine. Why should the hand-held laser welding machine be cold-proof and anti-freezing? Because the hand-held laser welding machine is in an environment where the temperature is too low, once the cooling water in the laser chiller is lower than the «freezing temperature» «Freezing point», the volume of the cooling water will increase due to the solidification of the cooling water, and other components (water separator, cold water plate) will also increase in volume, and at the same time will cause the water in the water system to freeze, affecting the normal use of the equipment, and will seriously cause The entire refrigeration system is damaged. Suggested working environment temperature of laser: about 22鈩? It is recommended to control the low water temperature of the water cooler: 20-24鈩? The high water temperature of the water cooler is recommended to be controlled at: 28-30鈩? In a low temperature environment, it is recommended to warm up the whole machine for 20 minutes. 24. How to choose shielding gas when laser welding? 1. Helium is not easy to ionize (higher ionization energy), which allows the laser to pass smoothly, and the beam energy can reach the surface of the workpiece without hindrance. This is the most effective shielding gas to use in laser welding, but it is more expensive. 2. Argon is cheaper and denser, so the protection effect is better. However, it is susceptible to high temperature metal plasma ionization, which shields part of the beam from the workpiece, reduces the effective laser power for welding, and also damages the welding speed and penetration. The surface of the weldment shielded with argon is smoother than when shielded with helium. 3. Nitrogen is the cheapest shielding gas, but it is not suitable for welding certain types of stainless steel, mainly due to metallurgical problems, such as absorption, and sometimes pores are generated in the overlap area. 4. When laser welding, we prefer nitrogen. When welding stainless steel or copper materials, if nitrogen does not work well, argon can be used. 5. The air pressure can be 0.3-0.5Mpa. Fiber Laser Welding Machine manufacturers website:http://www.fulaimachine.com/fiber-laser-welding-machine/