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<p>The snake rolling process is a relatively new method of rolling metal plates. This paper studies the deformation behavior of dissimilar metal plates during snake rolling. The velocity field, power field, thickness ratio, and equivalent strain models in the composite plate’s deformation zone are established using the flow function method. Through finite element simulation, calculation, and experimental analysis, it is proved that the layer thickness ratio and equivalent strain model have high prediction accuracy. The maximum relative errors are 6.88% and 11.13%, respectively, compared with the three results. The experimental analysis shows that the grain thinning of the composite plate is evident along the thickness direction. The grains of the stainless steel layer and the carbon steel layer are gradually refined as the reduction rate increases from 45 to 55%. Meanwhile, the oxide at the bonding interface decreases, and the diffusion distance of the Cr element gradually increases. At a reduction ratio of 55%, the maximum diffusion distance of the Cr element can reach 22.9&#xa0;μm, and the tensile strength can reach 558&#xa0;MPa. When the reduction ratio is 50% and 55%, the lath martensite structure appears at the bonding interface of the stainless steel layer. In conclusion, snake rolling can produce composite plates with good bonding properties and high strength. The prediction model has theoretical significance for improving industrial production efficiency and promoting the production of dissimilar metal composite plates with fine performance.</p>

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Research on the deformation behavior of the stainless steel/carbon steel composite plate prepared by snake rolling

  • 期刊论文

  • 发表日期：

    2025年6月30日

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  • Jia-Yu Song,
  • Lian-Yun Jiang,
  • Fu-Zhen Qiao,
  • Yan-Bing Lv,
  • Zhi-Quan Huang,
  • Li-Feng Ma

摘要

The snake rolling process is a relatively new method of rolling metal plates. This paper studies the deformation behavior of dissimilar metal plates during snake rolling. The velocity field, power field, thickness ratio, and equivalent strain models in the composite plate’s deformation zone are established using the flow function method. Through finite element simulation, calculation, and experimental analysis, it is proved that the layer thickness ratio and equivalent strain model have high prediction accuracy. The maximum relative errors are 6.88% and 11.13%, respectively, compared with the three results. The experimental analysis shows that the grain thinning of the composite plate is evident along the thickness direction. The grains of the stainless steel layer and the carbon steel layer are gradually refined as the reduction rate increases from 45 to 55%. Meanwhile, the oxide at the bonding interface decreases, and the diffusion distance of the Cr element gradually increases. At a reduction ratio of 55%, the maximum diffusion distance of the Cr element can reach 22.9 μm, and the tensile strength can reach 558 MPa. When the reduction ratio is 50% and 55%, the lath martensite structure appears at the bonding interface of the stainless steel layer. In conclusion, snake rolling can produce composite plates with good bonding properties and high strength. The prediction model has theoretical significance for improving industrial production efficiency and promoting the production of dissimilar metal composite plates with fine performance.