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A Feeding Strategy in Inner L-Shape Ring Hot Rolling Process

机译：L型环内热轧工艺中的进给策略

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摘要

In order to make the inner L-shape ring polling process with a closed die structure (ILRRCDS) on the top and bottom of the driven roll stable, at first, this paper established the mathematical model for ILRRCDS. Then, the plastic penetration and biting-in conditions for ILRRCDS were deduced based on plain ring rolling theory. Moreover, a feeding strategy that can realize a constant growth of the ring's outer radius was proposed and the reasonable value ranges of the feed rate of themandrel were determined. The numerical simulation model for ILRRCDS is established based on ABAQUS software. Finally, the equivalent plastic strain (PEEQ) and temperature distributions of rolled ring were obtained. The results indicated that the proposed feeding strategy can realize a stable ILRRCDS. At the end of ILRRCDS, the PEEQ at the inner radius surface of the ring ismaximum, the PEEQ at the outer radius surface of the ring takes the second place, and the PEEQ at the middle part of ring is minimum. With the increase of rolling time, the higher temperature zone of the rolled ring gradually moves from the center part of the ring to the " inner corner zone" of the ring.
机译：为了使从动辊顶部和底部具有闭模结构（ILRRCDS）的内部L形环轮询过程稳定，首先，建立了ILRRCDS的数学模型。然后，根据平环滚动理论推导了ILRRCDS的塑性渗透和咬入条件。此外，提出了一种可实现环外径不断增长的进给策略，并确定了其进给率的合理取值范围。基于ABAQUS软件建立了ILLRDCS的数值模拟模型。最后，获得了等效塑性应变（PEEQ）和轧制环的温度分布。结果表明，所提出的喂养策略可以实现稳定的ILRRCDS。在ILRRCDS的末尾，环的内半径表面的PEEQ最大，环的外半径表面的PEEQ排第二，而环的中间部分的PEEQ最小。随着轧制时间的增加，轧制环的较高温度区域从环的中心部分逐渐移至环的“内角区域”。

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  • 来源
    《Mathematical Problems in Engineering》 |2017年第9期|4218289.1-4218289.17|共17页
  • 作者

    Meng Wen; Wang Feifan; Guan Yanjin;

  • 作者单位

    Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R China;

    Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat Proc Technol, Minist Educ, Beijing 100084, Peoples R China;

    Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Shandong, Peoples R China;

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