Study the effect of single pulse energy on surface roughness of aluminum alloy by laser marking

Yuanchao Du; Lingling Zhang; Tianjiao Shu; Guoqi Li; Yuan Chen; Wenjie Yang; Jie Zhang; Xuanjun Zhang

doi:10.1117/12.2602512

31 August 2021 Study the effect of single pulse energy on surface roughness of aluminum alloy by laser marking

Yuanchao Du, Lingling Zhang, Tianjiao Shu, Guoqi Li, Yuan Chen, Wenjie Yang, Jie Zhang, Xuanjun Zhang

Proceedings Volume 11907, Sixteenth National Conference on Laser Technology and Optoelectronics; 119070Y (2021) https://doi.org/10.1117/12.2602512
Event: Sixteenth National Conference on Laser Technology and Optoelectronics, 2021, Shanghai, China

Abstract

Part surface roughness is an important index of part surface quality, and it has a great influence on the contrast of laser marking. The present study deals on the effect of single pulse energy on the roughness of laser direct part marking of aluminum alloy (2024) ,with the aim to find a relation between single pulse energy and roughness in term of both morphology and chemical composition. Firstly, the laser direct marking of Aluminum alloy (2024) was carried out on 1060nm MOPA laser, and then different pulse energies were measured by roughness detector. It is found that there is a nonlinear relationship between the roughness and the pulse energy, but the maximum value 8.12μm of roughness is obtained when the pulse energy is 0.13mJ. The surface morphology was observed by digital microscope system, and the composition and morphology was analyzed by energy dispersive spectrometer (EDS) and scanning electron microscope(SEM) results show that different pulse energy will cause obvious differences in the melting, vaporization and ablation degree of the marking surface, which affect the roughness of the marking surface.

Citation Download Citation

Yuanchao Du, Lingling Zhang, Tianjiao Shu, Guoqi Li, Yuan Chen, Wenjie Yang, Jie Zhang, and Xuanjun Zhang "Study the effect of single pulse energy on surface roughness of aluminum alloy by laser marking", Proc. SPIE 11907, Sixteenth National Conference on Laser Technology and Optoelectronics, 119070Y (31 August 2021); https://doi.org/10.1117/12.2602512

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