Investigation of spatter occurrence in remote laser spiral welding of zinc-coated steels

Deng, Shengjie; Wang, Huiping; Lü, Feifei; Solomon, Joshua; Carlson, Blair E.

doi:10.1016/j.ijheatmasstransfer.2019.06.009

Cited by 25 publications

(1 citation statement)

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“…However, thermal-based laser processing (drilling, welding, cutting, 3D printing, etc.) is complicated due to by-products such as spatter, recast, and cracking [1,2]. To restrain these disadvantages, the quality of the processed materials has become a hot topic.…”

Section: Introductionmentioning

confidence: 99%

Effects of Beam Mode on Hole Properties in Laser Processing

Zhang,

Li,

Zhang

et al. 2024

Coatings

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The laser beam mode affects the power density distribution on the irradiated target, directly influencing the product quality in laser processing, especially the hole quality in laser drilling. The Gaussian beam shape, Mexican-Hat beam shape, Double-Hump beam shape, and Top-Hat beam shape are four typical laser beam modes used as a laser heat source and introduced into our proficient laser-drilling model, which involves complex physical phenomena such as heat and mass transfer, solid/liquid/gas phase changes, and two-phase flow. Simulations were conducted on an aluminum target, and the accuracy was verified using experimental data. The results of the simulations for the fundamental understanding of this laser–material interaction are presented in this paper; in particular, the hole shape, including the depth–diameter ratio and the angle of the cone, as well as spatter phenomena and, thus, the formed recast layer, are compared and analyzed in detail in this paper. This study can provide a reference for the optimization of the laser-drilling process, especially the selection of laser beam mode.

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Section: Introductionmentioning

confidence: 99%