With the advancement and development of science and technology, the level of ship production technology has improved, and shipbuilding materials and ship design have also changed over time. The “Medium and Long-Term Development Plan of the Shipbuilding Industry” approved by the General Directorate of the State Council during the 11th Five-Year Plan period clearly mentions the direction and development direction of the shipbuilding industry plan, whose policy is to deepen the transformation. , accelerate development and relentlessly follow a new path of industrialization; at the same time, improve independent development and innovation capabilities and suitability of marine equipment. capabilities to improve the core competitiveness of China’s shipbuilding industry; considering both “pull” and “overtake”, shipbuilding enterprises should focus on the introduction, digestion and absorption of modular, welding, cutting and cutting equipment high efficiency. etc. in basic shipbuilding technologies and develop production, operation and management methods for my country’s modern shipbuilding industry.
Development Status of Hybrid Laser Arc Welding
As an emerging welding process, laser welding is gradually emerging in various industries. Laser welding has the advantages of high welding efficiency, good weld quality and low welding material loss. For medium and thick plate materials, hybrid laser arc welding has become the main welding technology and is used in aerospace, military industry, rail transportation, steel structures, shipbuilding and other industries.
For splice welding of ship plates in planar segments during the ship manufacturing process, Pentium Laser has developed a high-power laser arc hybrid welding process, suitable for carriage-type laser arc hybrid welding machines and large-scale hybrid gantry laser arc systems. welding machines suitable for ship splicing welding. The hybrid robotic laser arc welding machine is shown in Figure 1.
Figure 1 Robotic laser arc hybrid welding machine
In traditional custom welding of ship plates, submerged arc welding or gas shielded welding is generally used. Traditional submerged arc welding cannot achieve single-sided welding and double-sided forming. After the front welding is completed, a turning process is required and the back welding is done again. Custom welded vessels have a large surface area and thick plates. Therefore, special equipment is required for turning, which is expensive and carries certain risks when using it. In order to avoid the dangers of segmented and planar ship production, foreign shipbuilding companies, especially some European shipbuilding companies, have successively introduced hybrid laser arc welding processes and equipment. The weld shape of hybrid laser arc welding is shown in Figure 2.
Figure 2 Shape of hybrid laser arc welding bead
Car Type Laser Arc Hybrid Welding Machine
The carriage type laser arc hybrid welding machine (Figure 3) is designed for the custom welding station of planar segmented ship plates. The overall structure of the equipment is similar to that of the ship submerged arc welding cart. It has three servo axes. X, Y, Z axes. In addition, the equipment is equipped with a weld bead tracking system, which can realize real-time monitoring of weld beads and ensure the accuracy of the weld bead position . In terms of technology, the hybrid laser arc welding process is adopted, which can realize single-sided welding and double-sided forming. In terms of laser power, it can be equipped with 20-30kW laser to achieve tilt-free welding of plate thickness 6-30mm. Compared with traditional welding, the consumption of welding materials is reduced by 80% and the energy consumption is reduced by 40%.
Figure 3 Carriage-type hybrid laser arc welding machine
Large Gantry Laser Arc Hybrid Welding Machine
The large-scale gantry laser arc hybrid welding machine (Figure 4) is an equipment designed for the tailor-made ship plate welding station of the flat segmented automated assembly line. Different from the trolley type laser arc hybrid welding machine, the gantry type hybrid welding machine adopts the working principle that the gantry is fixed and the ship plate moves on the workbench. Likewise, the gantry type hybrid welding machine is equipped with 3 servo axes and a weld bead tracking system. In terms of technology, the laser arc hybrid welding process is adopted, which can realize single-sided welding and double-sided forming. In terms of laser power, it can be equipped with 20-30kW laser to achieve tilt-free welding of plate thickness 6-30mm. Compared with traditional welding, the consumption of welding materials is reduced by 80% and the energy consumption is reduced by 40%.
Figure 4 Large Gantry Laser Arc Hybrid Welding Machine
H Shape Steel Laser Arc Hybrid Welding Machine
The special laser arc hybrid welding machine for H-shaped steel (Figure 5) adopts the laser arc hybrid welding process and is suitable for welding T/H-shaped steel. The effect is shown in Figure 6. Equipment features: high efficiency welding, with a welding speed of up to 1.8m/min; deep penetration laser welding, which allows complete penetration of the strip; low consumption of welding materials, 1/5 of the traditional customizable processing width; assembly can be carried out Welding and correction three in one; fully automatic control, one-button start, easy to use.
Figure 5 H-shaped hybrid steel laser arc welding machine
Figure 6 Viewing a welding sample
Advice material: 15910974236
Conclusion
In summary, in the plane segmentation of shipbuilding, Pentium Laser has developed 2 equipment for tailor-made welding of ship plates. Pentium Laser is a foreign company. Thanks to the globalization of its technology and the localization of its equipment, it has localized its activities. Increasingly intense scientific and technological progress has led to increased demand for safety, reliability and efficiency of intelligent production technologies, shipbuilding materials and technologies, and cutting and welding technology in traditional shipbuilding will certainly be replaced by new technologies. The laser is also known as “the fastest knife”, “the most precise ruler” and “the brightest light”. With its advantages of precise beam and high speed, laser manufacturing technology will definitely improve, whether it is plane cutting or welding. the pillar of the intelligent ship production process.
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