Digital-twin-based predictive compensation control strategy for seam tracking in steel sheets welding of large cruise ships

Shang, Gang; Xu, Liyun; Li, Zufa; Zhou, Zhuo; Xu, Zhun

doi:10.1016/j.rcim.2024.102725

Cited by 7 publications

(1 citation statement)

References 44 publications

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“…Steel has an important position in the national economy [1] and is widely used in construction [2], machinery [3], railway tracks [4], ships [5], and other industries. However, ironmaking is one of the industries with high carbon emissions [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Distribution Behavior of Impurities during the Hydrogen Reduction Ironmaking Process

Wang,

Liu,

Zeng

et al. 2024

Metals

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The traditional blast furnace ironmaking process is the most widely used ironmaking process globally, yet it is associated with significant drawbacks, including high energy consumption and carbon emissions. To achieve low-carbon ironmaking, researchers have developed hydrogen ironmaking, which is capable of achieving lower CO2 emissions. Nevertheless, the distribution behavior of impurities has been less studied in the existing research on hydrogen ironmaking. Therefore, in this study, the factors affecting the slag properties and distribution of impurity elements during hydrogen ironmaking were investigated using FactSage, and smelting experiments were carried out. The results show that temperature has the greatest influence on the distribution behavior of the impurities, and excessively elevated temperatures result in the ingress of a significant quantity of impurities into the reduced iron. Reduced iron with a purity of 98.52% was obtained under the conditions of 10%, 10%, 2%, and 2% ratios of CaO, SiO2, MgO, and Al2O3, respectively, a hydrogen flow rate of 12 mL/min, and a temperature of 1400 °C; Lg L Mg, Lg L Al, Lg L Si, and Lg L Ca were 2.72, 2.41, 3.36, and 2.45, respectively (“L” stands for slag-to-metal ratio). The slag was mainly dominated by the silicate, and the iron was mainly lost in the form of mechanical inclusions in the slag. This study will enrich the basic theory of hydrogen ironmaking and is of great significance for the realization of carbon neutralization.

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Section: Introductionmentioning

confidence: 99%

Distribution Behavior of Impurities during the Hydrogen Reduction Ironmaking Process

Wang,

Liu,

Zeng

et al. 2024

Metals

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Influencing of Molten Pool Dynamic Behavior on the Weld Formation during the Laser‐Arc Hybrid Welding of 12 mm Thick Steel

Li,

Xu,

Liu

et al. 2024

steel research int.

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A numerical simulation model is put forward to study the molten pool dynamic behavior and clarify its influencing mechanism on the undercut defects in laser‐arc hybrid welding (LAHW). The undercut defect is a common and challenging problem to address. However, a controversy exists on whether the dynamic process of molten pool can affect undercut defects, and the potential mechanism has been still unclear. The results suggest that profile variation of molten pool surface is driven by surface tension gradient, and the existence of eddy can alter the morphology and surface tension distribution of molten pool, which is the main factor to homogenize the flow field. Compared with the short‐circuit transfer mode, the molten metal flows toward the welds edge at a constant velocity (2.5–3.75 m min−1) in the spray transfer mode, which improves the stability of molten pool flow. It can be observed that the irregular fluctuation of molten metal during the solidification process can directly cause the undercut defects.

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Optimization modeling and application of machine vision-based robot roller hemming for autobody panels with adhesive

Li,

Zhu,

Wang

et al. 2024

Int J Adv Manuf Technol

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Digital-twin-based predictive compensation control strategy for seam tracking in steel sheets welding of large cruise ships

Cited by 7 publications

References 44 publications

Distribution Behavior of Impurities during the Hydrogen Reduction Ironmaking Process

Distribution Behavior of Impurities during the Hydrogen Reduction Ironmaking Process

Influencing of Molten Pool Dynamic Behavior on the Weld Formation during the Laser‐Arc Hybrid Welding of 12 mm Thick Steel

Optimization modeling and application of machine vision-based robot roller hemming for autobody panels with adhesive

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