The continuous development of shipbuilding technology has led to major changes in shipbuilding materials and ship design. The application of laser technology in shipbuilding has its uniqueness, which is closely related to the processing and application characteristics of the ship and the characteristics of the laser manufacturing system. So, what are the specific applications of lasers in shipment?
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, accounting for more than 70% of the entire laser processing industry. The shipbuilding industry is mainly based on steel plate raw materials. The use of laser cutting plates can replace some punching processing methods that require the use of complex and large molds, greatly shortening the production cycle and reducing costs. After the laser cutting machine is used for blanking, the assembly margin is eliminated, the phenomenon of on-site repair and cutting is eliminated, labor and material waste are reduced, the frame assembly speed is significantly accelerated, and the assembly quality is significantly improved.
At present, the blanking methods of hull plate parts in the shipbuilding industry mainly adopt flame cutting, plasma cutting, shear processing and laser cutting. Compared with laser cutting, other cutting methods have many disadvantages. In the field of shipbuilding, laser cutting avoids the need to set a trimming allowance on the ribs to ensure the assembly gap when the plasma is blanking the ribs, and the trimming is performed manually, resulting in uneven trimming quality. Thereby reducing the assembly workload, assembly cycle, material and labor costs.
The marine steel plate cut by laser has good slit quality, good verticality of the cut surface, no slag, thin oxide layer, smooth surface, no secondary processing, direct welding, small thermal deformation, high curve cutting accuracy, and reduced coordination Working hours, to achieve barrier-free cutting of high-strength ship plates.
In the domestic shipbuilding industry, laser cutting does not occupy a dominant position. The main reasons include: ①Laser cutting costs are higher than traditional cutting methods; ②Large-scale laser cutting equipment is not suitable for the manufacturing characteristics of the shipbuilding industry, such as on-site construction, segmented operations, The working environment is complicated, etc.; ③There is no obvious advantage in cutting efficiency, especially for thick plate cutting in the shipbuilding industry; ④The maintenance of laser equipment is complicated, which requires high workers and high costs. In view of the special requirements of the cutting machine for the ship's outfitting work and the diversity of the processing shapes of the profiles used in the hull structure, the current situation of the industry is.
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