Laser forming process of complex surface on Al7075

Laser forming has been used as a non-contact forming technology to conduct plate deformation by using uneven thermal stress induced by a laser light source. Laser forming of 3D complex surface has wide application prospects. The study obtained “saddle surface” and “bowl shape surface” by using a rou...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2021-10, Vol.116 (9-10), p.2975-2988
Main Authors: Wang, Xiaogang, Shi, Yongjun, Guo, Yankuo, Li, Xianfa, Zhao, Xiaoyu
Format: Article
Language:English
Subjects:
Accuracy
Aluminum
CAE) and Design
Computer-Aided Engineering (CAD
Contact stresses
Deformation
Edge effect
Engineering
Flux density
Heating
Industrial and Production Engineering
Lasers
Light sources
Mechanical Engineering
Media Management
Metal plates
Original Article
Parameters
Thermal stress
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Summary:Laser forming has been used as a non-contact forming technology to conduct plate deformation by using uneven thermal stress induced by a laser light source. Laser forming of 3D complex surface has wide application prospects. The study obtained “saddle surface” and “bowl shape surface” by using a round 7075 aviation aluminum plate as research object and applying a reasonable technology parameter and path plan. Furthermore, the study investigated the deformation rule under various technology parameters. Results show that when the diameter of circular direction heating route is 35 mm, the forming accuracy of the “saddle surface” is the highest. The main factor that affects the plate forming accuracy is the non-uniform distribution of temperature on the heating line. Adopting a sectional-type symmetry scanning method can effectively control the “edge effect” that occurs during the process of round-shaped plate laser forming, which can enhance forming accuracy. The shape of the forming surface is related to the energy density of the heating line.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-021-07407-6