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<p>During the roll forming process of C-shaped steel, there is a common cut-off end flaring defect. This defect seriously affects the forming accuracy of high-strength steel products and causes difficulties for further processing. Based on the actual production conditions, a three-dimensional limited-edition continuous roll forming process of C-shaped steel is established. The element model was used to simulate the forming process, and rolling experiments were conducted to verify the accuracy of the model. The study found that the formation mechanism of this defect is that the stress curve of the profile changes during the forming process, causing the profile to be stretched and sheared in the longitudinal direction. Excessive residual stress exists. Simulation analysis points out that the edge minimum strain method can effectively reduce the residual stress in the profile. The influence of forming parameters on the cutting end flaring was discussed. The method of improving the cutting end flaring is put forward, which provides theoretical value for industrial production.</p>

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Research on cutting end flaring of C-shaped steel roll forming process

  • 期刊论文

  • 发表日期：

    2025年3月6日

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  • Haiqiang Wen,
  • Xiaoli Liu,
  • Hezong Li,
  • Yanliang Cui,
  • Bin Yan,
  • Suxia Huang,
  • Guangxuan Wang

摘要

During the roll forming process of C-shaped steel, there is a common cut-off end flaring defect. This defect seriously affects the forming accuracy of high-strength steel products and causes difficulties for further processing. Based on the actual production conditions, a three-dimensional limited-edition continuous roll forming process of C-shaped steel is established. The element model was used to simulate the forming process, and rolling experiments were conducted to verify the accuracy of the model. The study found that the formation mechanism of this defect is that the stress curve of the profile changes during the forming process, causing the profile to be stretched and sheared in the longitudinal direction. Excessive residual stress exists. Simulation analysis points out that the edge minimum strain method can effectively reduce the residual stress in the profile. The influence of forming parameters on the cutting end flaring was discussed. The method of improving the cutting end flaring is put forward, which provides theoretical value for industrial production.