1.Development of laser arc composite welding
With the progress and development of science and technology, ship production technology level. Shipbuilding materials and ship design, but also with the change of time and produce changes. The General Office of the State Council in the eleventh five-year period approved the introduction of the "medium and long-term development plan for the shipbuilding industry", clearly mentioned the guidance and development direction of the shipbuilding industry planning, its policy is to deepen the transformation, accelerate the development, and unswervingly take the route of the new type of industrialization; at the same time, enhance the ability of self-development and innovation and the supporting capacity of the shipbuilding equipment, which is used to improve the core competitiveness of China's shipbuilding industry; will be "Attract" and "go over" both, while shipbuilding companies should focus on the introduction, digestion and absorption of modular outfitting, high-efficiency welding, cutting and other core technologies in shipbuilding and the development of China's modern shipbuilding industry production and management methods.
Laser welding as an emerging welding process, gradually in various industries. Laser welding has the advantages of high welding efficiency, good weld quality, welding consumables loss is small. For medium-thick plate materials, laser arc composite welding has become the current leading welding technology, which is being used in aerospace, military, rail transportation, steel structure, shipbuilding and other industries.
For the shipbuilding process in the plane segments in the ship plate welding, MRJ-Laser research and development of high-power laser arc composite welding process, applicable to the ship splicing welding trolley-type laser arc composite welding machine, large gantry laser arc composite welding machine and so on.
Laser arc composite welding seam shape
In the traditional ship plate splicing welding, submerged arc welding or gas shielding welding is generally used. Traditional submerged arc welding cannot realize single-sided welding and double-sided forming. After the front side welding is completed, it is necessary to turn over the process and weld the back side again. The area of the welded ship is large, and the thickness of the plate is large, therefore, the flanging process requires special equipment, which is expensive and dangerous to use. In order to avoid the danger of the ship plane segment production and manufacturing, foreign shipbuilding companies, especially in Europe part of the shipbuilding company, has introduced the laser arc composite welding process and equipment.
2.Trolley type laser arc composite welding machine
Trolley-type laser arc composite welding machine is designed for flat segmentation of the ship plate welding station. The overall structure of the equipment is similar to the ship submerged arc welding trolley. The trolley welding machine has 3 servo axes, X, Y and Z. The machine is equipped with a seam tracking system. In addition, the equipment is equipped with a weld tracking system, which can realize real-time monitoring of the weld to ensure the accuracy of the weld position. In terms of process, it adopts laser arc composite welding process, which can realize single-side welding and double-side forming. In terms of laser power, it can be matched with 20KW-30KW laser to realize no-flip welding for 6mm-30mm plate thickness. Compared with traditional welding, the consumption of welding consumables is reduced by 80%, and the power consumption is reduced by 40%.
3.Large Gantry Laser Arc Composite Welding Machine
Large gantry laser arc composite welding machine is designed for the plane segmentation automated assembly line ship plate welding workstation design equipment. Unlike the trolley type laser arc composite welding machine, the gantry composite welding machine adopts the working principle that the gantry is fixed and the ship plate moves on the working table. Similarly, the gantry type composite welding machine is equipped with 3 servo axes and seam tracking system. In terms of process, the laser arc composite welding process is adopted, which can realize single-side welding and double-side forming. In terms of laser power, it can be equipped with 20KW-30KW laser to realize no-flip welding for 6mm-30mm plate thickness. Compared with the traditional welding, the consumption of welding consumables is reduced by 80% and the power consumption is reduced by 40%.
