High quality laser forming spiral finned tube machine

1. Market application prospects
Such as high-end gas boiler liners, steam boilers, petroleum, chemical, coal chemical, shipbuilding, electricity, electric heating, various environmentally friendly smoke treatment, marine electromechanical, oxygen production, nitrogen production and other industrial gases, nuclear power plant steam water separation reheaters, super large refrigeration engineering and cold storage, large gas and steam turbines, gas appliances, efficient heat recovery and reuse systems. With the continuous progress of science and technology, traditional products with high energy consumption, low quality, and low lifespan will inevitably be eliminated, and will be revolutionized by more advanced innovative science and technology.
2. Intelligent fiber laser integration
Developed and integrated using single-mode fiber lasers for independent beam combining, the entire machine is integrated into an industrial computer control system. All intelligent controls such as 3D tangent direction tension control mold system, 3D speed differential rotary extrusion rolling mold system (redistribution of rotary extrusion rolling atoms), steel strip automatic breaking mechanism, spindle high inertia servo mechanism, pitch dual drive servo drive car mechanism, laser welding head, 6-axis CNC motion control system, welding process software package, etc. are uniformly integrated into the industrial computer distributed control system (DCS).
3. Solid metal flow 3D rotary extrusion laser welding forming process:
The metallographic structure of the metal changes little, the molten pool is deep, the heat affected zone is small, the fin spacing is small, the fins are thin (can produce thin fins of 0.3mm or more), and the real metallurgical bonding makes it more corrosion-resistant than products formed by other processes under the same material.
A. Features: The minimum fin spacing of laser welded spiral finned tubes can reach 2.0mm, and the thinnest can be welded to 0.3mm, which is incomparable to traditional high-frequency welded finned tubes (with a minimum fin spacing of 6mm). Compared to traditional spiral finned tubes with the same area, it has higher heat conversion efficiency, smaller volume, more space savings, significant resource savings, and longer service life, solving the problem of frequent maintenance.
B. Welding firmness: The high energy density of the laser beam allows for instantaneous metallurgical bonding between the two substrates, resulting in a very small heat affected zone and a deep melt pool. The atomic density of the weld seam is higher than that of the substrate.
C. Corrosion resistance (compared to high-frequency welding): High frequency welding is a stretching process that produces a large number of tensile cracks, extensive changes in metallographic structure, and non metallurgical bonding; The metal solid-state flow 3D rotary extrusion method involves redistributing and extruding atoms onto a steel pipe under external force, and then rolling them into three-dimensional ring-shaped fins. The finned tube made in this way has a higher atomic density and does not produce micro cracks inside the steel strip, so the spiral finned tube made of the same material is more corrosion-resistant.
4. Advantages and disadvantages compared to high-frequency welded finned tubes:
Advantages: The crown of the fiber optic industry and the king of the welding industry (patent number:. 12016 1 0664599.8) Quality is life, and service is the future of Aoxin laser welding experts!
Energy saving: High frequency welding machines typically have a power of several hundred kilowatts, which is more than 10 times more energy-efficient compared to high-frequency welding. They are green, low-carbon, environmentally friendly, and economical.
High heat exchange efficiency: The same material is several times more efficient than traditional high-frequency welded finned tubes, with true metallurgical bonding and small fin spacing.
Good corrosion resistance: Traditional high-frequency welding is formed by stretching, resulting in a loose structure of the finned tube structure. At the same time, it is not metallurgical bonded, so it is not corrosion-resistant and has low thermal conversion efficiency. The fins developed by Aoxin Laser using the metal solid-state flow method for 3D high-speed extrusion are formed by redistributing atoms based on the principle of metal solid-state flow method. The metallographic structure changes little, the welding pool is deep, and high-frequency welding can never be achieved.
Integrate the laser welding machine, all mechanical structures, welding processes, spiral finned tube forming processes, and all logical actions of the entire production process into one industrial PC system using industrial computers, achieving a higher degree of intelligence.
During the process of welding fins with laser, the ambient temperature is very low, there is no water vapor or smoke, and the working environment is clean and basically pollution-free. Disadvantages: A. The process is complex and the difficulty of developing equipment is extremely high. B. The initial investment is large, but it is of great significance for energy conservation, emission reduction, and environmental protection, and also meets the requirements of the international Paris Climate Agreement.

It is extremely difficult to carry out processes such as transmission, steel pipe fixation, laser welding, metal solid-state 3D rotary extrusion rolling into fin technology, laser point positioning, steel strip starting, real-time proportional control of power and motion speed, and three-dimensional rotary extrusion rolling atomic redistribution of fins.
2.1. Steel pipe fixation:
The concentric precision fit of the mold and rotating spindle (with extremely high requirements) adopts a three roll automatic concentric positioning steel pipe and adjustable steel pipe tightness design.
2.2. Solid metal 3D rotary extrusion process:
Using the solid-state flow method of metal, the steel strip is rolled into a fin ring in three dimensions in a 3D speed differential rotary extrusion rolling mold under sufficient external force. All process actions are established in a three-dimensional multi axis CNC linkage system, ultimately forming a multi axis linkage laser welding spiral finned tube forming equipment.
2.3. The perfect integration of special mold forming and structural support is the most difficult process:
After exploring nearly 50 sets of molds, a solution was finally found, which wasted a lot of labor, materials, design, processing and other costs. After 3 years of development and 7 years of continuous improvement, it has reached the level of international competition.
2.4 . The spiral finned tube welding equipment of Aoxin Company has been developed and upgraded for the 5th generation, and has finally reached the "international competitive level", which can withstand tests such as salt spray, metallography, tensile strength, and corrosion resistance under the same material.

（1） Basic Attribute 3.1 Model: AXL-1500/2000/3000/4000/6000 CFSP4/6/8/10
Model Explanation: AXL - Aoxin Laser, 1500/2000/3000/4000/6000- Laser Power, CFS - Intelligent Fiber Laser, P-Process Software Package, 3.2 Whole Machine Power: ≥ (12.5KW, 14KW, 17KW, 24KW, 27KW)
3.3 Material specifications: The diameter of the pipe base pipe is Φ 12~50mm, and the thickness of the steel strip is T=0.3mm~1.2mm; The height of the steel strip is ≤ D/2 (D: outer diameter of the steel pipe).
3.4 Main applicable materials: Low carbon steel, stainless steel 304, 316, 316L, 316LTi, ferritic stainless steel 444 and other commonly used materials.
3.5 Welding speed and quality: no wrinkles, 100% full welding rate, maximum steel strip line speed up to 100mm/s (determined by the physical and chemical properties, thickness, and height of the steel strip);
If the material has good ductility, the maximum welding line speed can reach 150mm/s (determined by the physical and chemical properties of the material and the specifications of the steel strip). It is truly the 5th generation and the latest model competing on the same stage internationally.
3.6 Machine warranty instructions: The core components of the laser are guaranteed for two years, and all other components are guaranteed for one year (consumables are not covered by the warranty).
3.7 Special laser function: CW continuous output (0~10V), pulse PWM、QCW、 Arbitrary modulation output of power waveform, proportional ramp output, etc.

1. Extremely energy-saving and efficient: saving more than 10 times more electricity than high-frequency welding, maintenance free.
2. Latest design (synchronized with international standards): Utilizing the solid-state flow method of metal, the three-dimensional cold rotary extrusion is rolled into a three-dimensional fin ring, with a bright and wrinkle free surface.
3. Quality and international competition, with the most advanced manufacturing technology in the world.
Compared with domestic finned tubes, it is more corrosion-resistant and has higher heat exchange efficiency under the same material.
5. The metallographic structure changes little, the weld seam is uniform and consistent, and the three-dimensional surface is bright.
6. Bonding strength: The full welding rate is 100%, and the bonding strength at the weld seam is higher than that of the substrate.

1. The customer needs to provide the specifications and materials of the base pipe, the specifications and materials of the steel strip, and the requirements for the environment in which the finned tube is used and the ring tube is used.
2. When choosing power and stroke, it depends on the production efficiency and cost-effectiveness of the models required by the company.

1. Intelligent composite dual spot fiber laser: waveform intelligent power programmable control (process software package requires payment)
A. 976 high brightness LD chip module independently combines ten thousand fiber lasers;
B. The internal optical core has a multi-purpose intelligent laser with pulse, continuous, and Ramp modulation;

2. Example application of Aoxin laser welding process products

Dongguan Aoxin Laser Welding Equipment Co., Ltd. has been developing laser welding spiral finned tubes for 7 years and holds 4 product patents. The product has been continuously improved to the 5th generation, reaching a technological level that competes with the international market, and can provide customers with complete application solutions in various industries.
2. Petrochemical, electric heating, waste heat utilization, PM2.5 smoke treatment, gas appliances, gas boilers, industrial or medical gas production (oxygen, nitrogen, etc.), super large central cold storage, ocean engine electric heat exchangers, pressurized water reactor steam water separators for nuclear power plants, super large steam turbine heat exchangers, military escort ship heat exchangers, etc. have all been deeply tested and practically applied for many years.