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<p>Surface profile has a significant impact on the quality of ultrasonic rolling, which is generally caused by cutting pre-treatment. In this paper, the surface material flow characteristics and deformation mechanism of 7N01 aluminum alloy with different cutting surface profiles during ultrasonic rolling were studied. By analyzing the non-coordinated contact mechanism between the rolling ball and cutting profile and combined with the dynamic impact experiment, the finite element model of 7N01 aluminum alloy composite cutting–ultrasonic rolling process(CURP) was established, which involves the surface profile of cutting. The flow and stress of different surface profiles under the coupling of ultrasonic vibration and rolling effect were studied, and the effect of surface forming was evaluated experimentally. The results show that the reduction ratio of the height of the trapezoidal rough peak after ultrasonic rolling is the largest, which is 36.4%, followed by the circular arc rough peak 31.7%, and the triangular rough peak is the least, which is 22.4%. The stress level generated by the arc-shaped rough peak is lower than that of the other two surface profiles. Due to the existence of the contour turning point, the stress of the triangular and trapezoidal surface profiles reaches a large level at the vertex at the beginning of the deformation, and the plastic flow occurs, which plays a role in coordinating the deformation and avoiding the surface damage.</p>

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Influence of cutting surface profile on the plastic flow characteristics during ultrasonic rolling processing

  • 期刊论文

  • 发表日期：

    2025年7月8日

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  • Xiao Yu,
  • Feng Li,
  • Zhigang Wei,
  • Qingyao Tan,
  • Yanchun Zhai,
  • Fanguang Bu,
  • Youqiang Wang

摘要

Surface profile has a significant impact on the quality of ultrasonic rolling, which is generally caused by cutting pre-treatment. In this paper, the surface material flow characteristics and deformation mechanism of 7N01 aluminum alloy with different cutting surface profiles during ultrasonic rolling were studied. By analyzing the non-coordinated contact mechanism between the rolling ball and cutting profile and combined with the dynamic impact experiment, the finite element model of 7N01 aluminum alloy composite cutting–ultrasonic rolling process(CURP) was established, which involves the surface profile of cutting. The flow and stress of different surface profiles under the coupling of ultrasonic vibration and rolling effect were studied, and the effect of surface forming was evaluated experimentally. The results show that the reduction ratio of the height of the trapezoidal rough peak after ultrasonic rolling is the largest, which is 36.4%, followed by the circular arc rough peak 31.7%, and the triangular rough peak is the least, which is 22.4%. The stress level generated by the arc-shaped rough peak is lower than that of the other two surface profiles. Due to the existence of the contour turning point, the stress of the triangular and trapezoidal surface profiles reaches a large level at the vertex at the beginning of the deformation, and the plastic flow occurs, which plays a role in coordinating the deformation and avoiding the surface damage.