Apr 07, 2020
In the current laser cutting system, the limitations in aviation applications have been improved. Now, the laser system greatly reduces the size of the heat-affected zone (HAZ) and the corresponding micro cracks. In the process of laser cutting, technicians have been able to control the cutting parameters, and use the calculator software for accurate repetition. These technological advances make people rethink whether laser cutting is suitable for the production of a fuselage structure. The fuselage structure is mainly made of 7000 series aluminum materials.
Fatigue fracture usually occurs at the place where stress is concentrated, such as the edge of the part, the change of geometry, or the joint. The fuselage parts made of sheet metal have many different joints, and most of the fatigue cracks occur at the joints. If the laser is not used to cut the holes in the joint, the laser is mainly used to cut the edges of the parts. For other effects, the most easily damaged connection position can be used to show that the micro-cracks caused by laser cutting are not the main damaged parts compared with the connection position. In this way, we can conclude that if a part is likely to break at the joint, the laser cutting technology will not further damage the fatigue characteristics of the part.
The laser cutting process can process consistent parts faster, and it is more efficient than traditional machining. Laser technology is expected to reduce processing time and production costs. For a long time, in the processing of 7000 series aluminum plate, the advantage of laser has not been brought into play due to the decrease of fatigue performance. Recently, the innovation of laser system makes people reevaluate the advantages of laser cutting aluminum for aviation. Preliminary tests have shown the potential of laser technology in fuselage processing. Future fuselage systems and existing designs should not exclude the possible application of lasers in the fuselage system because of past experience. We should keep an open attitude to analyze various situations to determine whether laser technology can bring product benefits.
KING’S laser specialized in manufacturing metal laser cutting machine equipment, providing customers with a variety of metal laser cutting machine options. Please contact us freely for more information.