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Application of laser cutting technology in ships
The continuous development of shipbuilding technology has led to major changes in shipbuilding materials and ship design. The application of laser technology in ship manufacturing has its unique characteristics, which is closely related to the characteristics of the ship's own processing and application and the characteristics of the laser manufacturing system. So what are the specific applications of lasers in ships?
In recent years, "precision shipbuilding" and "fast shipbuilding" have become the main trends in the development of the shipbuilding industry. Laser cutting technology has developed rapidly, occupying more than 70 in the entire laser processing industry. The ship manufacturing industry is mainly based on steel sheet materials. The use of laser cutting plates can replace some punching and cutting methods that require the use of complex large-scale molds, greatly shortening the production cycle and reducing costs. After using laser cutting machine to cancel the assembly margin, the phenomenon of on-site repair and cutting was eliminated, and the waste of labor and materials was reduced. The assembly speed of the frame was significantly accelerated and the assembly quality was significantly improved.
At present, the ship industry hull plate parts of the discharge method mainly by flame cutting, plasma cutting, shear processing and laser cutting. Other cutting methods have many disadvantages compared with laser cutting. In the field of ship manufacturing, laser cutting avoids the occurrence of uneven quality of repair and cutting in order to ensure the assembly gap when plasma is placed on the rib. This reduces the assembly workload, assembly cycle, material and labor cost waste.
Through laser cutting of marine steel plates, the quality of cutting seams is good, the incision surface is vertical, there is no hanging slag, the oxide layer is thin, the surface is smooth, there is no need for secondary processing, it can be soldered directly, and the thermal deformation is small, and the curve cutting accuracy is high. Reduce working hours, Achieve barrier-free cutting of high strength board.
In the domestic ship industry, laser cutting does not occupy a dominant position. The main reasons include: 1. The cost of laser cutting is higher than that of traditional cutting methods; Large equipment for laser cutting is not suitable for the manufacturing characteristics of the ship industry, such as on-site construction, segmented operations, and complex working environment; 3 There is no obvious advantage in cutting efficiency, especially the thick plate cutting in the shipping industry; The complex maintenance of laser equipment is demanding and costly for workers. According to the special requirements of ship outfitting board work for cutting machine and the variety of profile machining shapes used for hull structure, the present situation of the industry.
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