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| 1 | 有高温相变的电工钢热轧起浪的有限元分析显示文摘针对电工钢自由规程轧制过程起浪问题,开展电工钢不同冷却条件下的连续冷却相变转变温度分析测定和Gleeble热模拟实验,发现电工钢在975~875℃的奥氏体-铁素体两相区,随着轧制温度降低,变形抗力反而减小;电工钢大量同宽自由规程轧制下的工作辊出现严重的不均匀的箱型磨损和明显的热胀,综合辊形变化显著.考虑电工钢两相区变形抗力差异和综合辊形变化,建立电工钢热轧过程轧辊轧件的三维弹塑性耦合有限元模型,仿真分析轧制力、弯辊与窜辊对承载辊缝形状的影响,研究摩擦系数、压下量与轧制速度对带钢宽度方向内应力变化规律的影响,采用Shohet板形判据确定电工钢比例凸度残差变化路径,明确电工钢在“平坦死区”较大的上游机架出现“异常起浪”的生成过程.该方法为电工钢热轧板形的浪形控制提供了依据. | 曹建国 唐慧 杨光辉 温盾 周云松 赖金权 | 2016 | 哈尔滨工业大学学报2016，48，1： | 6 |
| 2 | A brief investigation on transversal temperature distribution during hot rolling显示文摘Temperature evolution of a working piece during hot rolling has a significant influence on the microstructure and final mechanical properties of the material. As the measurement technologies improve,on-line measurement of the temperature across the strip width has become accessible,and thus monitoring and control of the transversal temperature distribution during hot rolling can be realized.The scanning of the temperature across the strip width can help us to understand the state of the temperature variation at the strip edges and as a result help us improve the temperature homogeneity of the strip.In this paper,reaearch on temperature distribution along the strip width is reviewed first,and then the mechanism of the scanning measuring devices is introduced.With the temperature scanning measurement data taken from the finishing mill entry point and the down coiler entry point,the temperature distribution at the strip edges is analyzed.It is pointed out that the roughing process is the main contributor to the temperature inhomogeneity.Furthermore,the contribution of the edger heater to the temperature homogeneity is investigated. | SHAN Xuyi | 2012 | Baosteel Technical Research2012，6，4： | 0 |
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