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解决薄带钢在拉伸矫直过程中出现的翘曲问题具有十分重要的现实意义.以两弯一矫拉矫机为例,全面分析了薄带钢在拉伸矫直过程中出现翘曲的原因.提出了改进的新结构,并取得了良好板型控制效果. 相似文献
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The ribbing problem has serious influence on the steel product quality, which produces additional shape waves on the surface of uncoiled steel strip on the process of curl. Nonlinear spline finite element method (n-spline FEM) is adopted to establish the relationship between the ribbing height and deflection of additional shape wave, for example, post-buckling deformation. The proposed spline FEM is more effective and convenient than traditional finite element method in the buckling analysis. Using the spline FEM, the shape wave caused by the ribbing is calculated, and then the ribbing values can be obtained which are difficult to measure in practice. At the same time, the judgment rule is also given for estimating the strip quality according to the ribbing value. 相似文献
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Using 3 D elastic plastic FEM, the cold strip rolling process in a 4 high mill was simulated. The elastic deformation of rolls, the plastic deformation of the strip, and the pressure between the work roll and the backup roll were taken into account. The distribution of rolling pressure along the strip width was obtained. Based on the simulation results, the peak value of rolling pressure and the location of the peak were analyzed under different rolling conditions. The effects of the roll bending force and the strip width on the distribution of rolling pressure along the width direction were determined. 相似文献
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介绍了南钢利用自炼的优良坯料资源进行轴承钢带钢的开发,以替代棒材轴承钢,简化了下游的制造工艺,降低了加工成本。通过对加热工艺、轧制工艺、冷却工艺的摸索,使产品的碳化物控制水平达到并超过了棒材的水平,实现对棒材成功替代。 相似文献
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介绍了国外几家公司接近产业化的薄带连铸技术的发展概况.根据国内外薄带连铸和薄板坯连铸的专利和生产实践,认为目前适合应用薄带连铸技术生产的碳钢为低碳硅锰镇静钢.也介绍了国外公司生产硅锰镇静钢的成分和性能.通过控制钢中的总氧含量,钢中可形成低熔点的夹杂物,并均匀地分布在铸带的厚度方向,从而有利于快速凝固过程中的高速传热.同时,还应该控制好钢中的碳、氮、氢含量,以获得表面质量良好的产品. 相似文献
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齐淑娥 《金属材料与冶金工程》2013,(5):8-10
冷轧带钢表面划伤问题是冷轧生产中经常遇到的技术性难题。介绍了攀钢冷连轧机生产过程中的带钢边部横向划伤现象,分析了横向划伤产生的原因,采取了相应的对策措施,成功解决了带钢边部横向划伤的难题。 相似文献
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对热轧带钢在冷轧过程中产生的"起筋"缺陷进行了分析.通过大量统计数据,分析了"起筋"位置、成因、"起筋"卷局部高点、凸度以及楔形之间的关系,并对热轧工艺进行了改进,取得了很好的效果,保证了断面适当的大凸度、小楔形和适当的局部高点,大大降低了带钢"起筋"率,改善了产品质量. 相似文献