锻压技术

薄带钢卷取过程中屈曲缺陷生成机理

英文标题：Generation mechanism of buckling defects during coiling process for thin strip steel

单位：(1.武汉科技大学机械自动化学院湖北武汉 430081 2. 武钢有限技术中心湖北武汉 430080 3.武汉钢铁有限公司湖北武汉 430080)

分类号：TG306

出版年,卷(期):页码：2024,49(12):90-97

摘要：

摘要：针对薄带钢卷取过程中产生的横向屈曲缺陷问题，采用有限元软件ABAQUS建立了带钢卷取过程的动态仿真模型，并通过修改INP文件中带钢各个结点的坐标得到不同的初始板形，分析了带钢初始板形、卷取张力及带钢厚度对带钢横向屈曲缺陷的影响规律。研究结果表明：带钢厚度小于0.20 mm时，减小卷取张力能够改善四分浪、复合浪和中浪初始板形的带钢的横向屈曲缺陷；带钢厚度为0.20 mm时，中浪初始板形的带钢在卷取张力为25 MPa时最不易产生横向屈曲，减小和增大卷取张力均会增大其横向屈曲；当卷取张力一定时，各初始板形带钢的屈曲系数随带钢厚度增大而减小，即增大带钢厚度能够减小横向屈曲。具有双边浪形的带钢在不同卷取张力和带钢厚度下均保持在较小水平，未发现横向屈曲缺陷。

Abstract: For the transverse buckling defect problems in the coiling process of thin strip steel, the dynamic simulation model of the strip coiling process was designed by finite element analysis software ABAQUS, and the coordinates of each node of strip steel in the INP file were modified to obtain the different initial plate shapes.

The influence laws of initial plate shape, colling tension and the thickness of strip steel on the transverse buckring defect were analyzed.

The results show that when the thickness of the strip steel is less than 0.2 mm, reducing the coiling tension can improve the transverse buckling defects of the strip steel with the initial plate shape of the quarter wave, composite wave and medium-wave. When the thickness of the strip steel is 0.2 mm, the strip steel with the initial plate shape of the medium wave is the least prone to produce transverse buckling when the coiling tension is 25 MPa, and the transverse buckling is increased by decreasing and increasing the coiling tension. When the coiling tension is constant, the buckling coefficient of each initial strip steel decreases with increasing of thickness, that is, increasing the thickness reduces transverse buckling. The strip steel with double-sided wavy remains at a relatively low level under different tensions and thicknesses, and no transverse buckling defects were found.

基金项目：

基金项目:国家自然科学基金资助项目(52375117)

作者简介：王志强(1997-)，男，硕士研究生 E-mail：2439622718@qq.com 通信作者：吴宗武(1987-)，男，硕士，讲师 E-mail：421123a012n.cdb@sina.cn

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