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首页> 外文期刊>ISIJ international >Deformation Behavior of Longitudinal Surface Flaws in Flat Rolling of Steel Wire
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Deformation Behavior of Longitudinal Surface Flaws in Flat Rolling of Steel Wire

机译：钢丝扁平轧制纵向表面缺陷的变形行为

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摘要

The deformation behavior of a longitudinal V-shaped surface flaw was investigated during the flat wire rolling process using finite element analysis. The effects of process conditions, material properties, and initial position of the flaw on the deformation behavior of surface flaws were evaluated to understand the deformation behavior of flaws and to find solutions to decrease flaws. The surface flaw, that is, the ratio of the depth and width of the surface flaw (r ), decreased with increasing reduction in height per pass, roll diameter, and friction coefficient. Unfortunately, the surface flaw and strain homogeneity of the wire simultaneously decreased under similar process conditions. The surface flaw slightly decreased with the strain hardening exponent (n ) by increasing the width of the surface flaw. However, the effect of n value on the deformation of the surface flaw was not crucial. Higher strain at the flat surface induced an overlap-type surface flaw, whereas a small strain in the free surface induced an open-type surface flaw during the flat wire rolling process, which means that the surface flaw on the flat surface was much more detrimental than the surface flaw on the free surface. The deformation behavior of the surface flaw in flat-rolled wire was highly related to the strain inhomogeneity and lateral spreading of the wire. As the strain inhomogeneity of the flat-rolled wire increased, the lateral spreading of the wire increased, resulting in a decrease in the surface flaw, i.e. , the r value.
机译：使用有限元分析在扁平线轧制过程中研究了纵向V形表面缺陷的变形行为。评估了工艺条件，材料特性和缺陷对表面缺陷变形行为的初始位置的影响，以了解缺陷的变形行为，并找到减少缺陷的解决方案。表面缺陷，即表面缺陷（ r）的深度和宽度的比率随着每次通过的高度，辊直径和摩擦系数的增加而降低。不幸的是，在类似的工艺条件下，线的表面缺陷和应变均匀性同时降低。通过增加表面缺陷的宽度，表面缺陷随着应变硬化指数（ n）略微降低。然而， n值对表面缺陷变形的影响并不至关重要。平坦表面的较高应变诱导重叠型表面缺陷，而自由表面中的小菌株在扁平线轧制过程中诱导开放式表面缺陷，这意味着平坦表面上的表面缺陷更具损害比自由表面上的表面缺陷。扁平轧制线上表面缺陷的变形行为与电线的应变不均匀性和横向扩展具有高度相关。随着扁平轧制线的应变的不均匀性增加，线的横向扩散增加，导致表面缺陷的减少，

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