锻压技术

连续退火炉内带钢的张力分布及瓢曲分析

英文标题：Analysis of strip buckling and tension distribution in continuous annealing furnace

作者：叶玉娟周旭东李俊胡广魁

关键词：带钢凸度辊瓢曲临界载荷退火炉

分类号：TG335.55

出版年,卷(期):页码：2010,35(3):131-134

摘要：

瓢曲是连续退火炉内普遍存在的问题。带钢在张力作用下经过旋转的凸度辊时，由于炉辊凸度、摩擦力及塑性积累效应等的综合影响，将发生瓢曲质量缺陷。运用有限元软件ABAQUS对运行中的带钢进行数值模拟，找出带钢上张力的分布情况、瓢曲临界载荷、带钢张力与瓢曲位置的关系。结果表明，带钢上存在横向压缩应力，8 mrad凸度辊的瓢曲临界载荷在18.0～20.5 MPa之间，带钢张力较小时圆柱部分带钢出现瓢曲，张力较大时圆柱部分与辊肩处均出现瓢曲。

Buckling is a common problem in continuous annealing furnace. Due to the combination of roll crown, friction,cumulation effect of plastic and other factors, when the strip runs over the rotating tapered rolls under tension, the quality defect of strip buckling would be occurred. Using finite element software ABAQUS to analyse the strip buckling in continuous annealing furnace, the distribution of tension on strip, buckling critical load, the relationship between the location of buckling and strip tension were found.The results show that there are compressive stresses on the strip.The buckling critical load of 8 tapered roll is between 18 MPa and 20.5 MPa. Buckling appears at the cylindrical part of furnace roll when strip tension is small,but if the tension is much larger, it appears at both cylindrical and shoulder of furnace roll.

基金项目：

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