汽车罐用高强钢平整问题分析与对策
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摘要
为提升汽车罐用高强钢板形质量,以平整工序出现的问题为切入点,建立带材和工作辊模型,利用有限元方法,定量分析平整机前、后张力及工作辊直径对接触压力的影响。结合实验,确定轧制汽车罐用高强钢时平整液质量分数为6.3%,工作辊半径方向凸度为10μm,增加前、后张力50%,使用直径420～430 mm的工作辊,并配合窜辊与弯辊机构的协同作用,可保证汽车罐用高强钢的板形质量良好。
In order to improve the quality of high-strength steel for automotive tank, the problem existing in level process was taken as the entry point, and strip and work roll models were established. Using finite element methods, the influence of tension before and after level machine and the diameter of work rolls on the contact pressure was quantitative analyzed. Combining with experimental method, while high strength steel for automobile tank is rolled, the level emulsion mass fraction is 6.3%, work roll diameter direction crown is 10 μm, add forward and post tension 50%, adopt work roll diameter 420～430 mm, coordinate with the synergistic action of the shifting and bending roller mechanism, the shape quality of high strength steel for automobile tank was guaranteed.
In order to improve the quality of high-strength steel for automotive tank, the problem existing in level process was taken as the entry point, and strip and work roll models were established. Using finite element methods, the influence of tension before and after level machine and the diameter of work rolls on the contact pressure was quantitative analyzed. Combining with experimental method, while high strength steel for automobile tank is rolled, the level emulsion mass fraction is 6.3%, work roll diameter direction crown is 10 μm, add forward and post tension 50%, adopt work roll diameter 420～430 mm, coordinate with the synergistic action of the shifting and bending roller mechanism, the shape quality of high strength steel for automobile tank was guaranteed.
引文
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[2] 徐亮,王利,章敏,等.汽车罐车用17MnNiVNbR(WH590)钢板的性能[J].机械工程材料,2014(5):52-56.
[3] 王国文,杨文荣,刘小林.压力容器用XG630DR钢板的研制[J].压力容器,2015(10):8-16.
[4] 白振华,陈凤坡,蒋岳峰,等.双机架平整机延伸率分配模型研究[J].中国机械工程,2005(15):1332-1334.
[5] 白振华,康晓鹏,吴首民.双UCM平整机组板形参数在线设定技术[J].钢铁,2009(5):39-43.
[6] 张清东,李博,张晓峰.带钢平整轧制板形控制行为及效应的研究[J].机械工程学报,2014(8):45-52.
[7] 刘志亮,李文强,王英杰.动态板形辊平整机板形控制机理模型研究[J].中国机械工程,2011(13):1624-1628.
[8] 魏圣明.VC辊平整机板形调控性能的研究[J].武汉科技大学学报,2010(6):580-584.
[9] V.B.金兹伯格.高精度板带材轧制理论与实践[M].北京:冶金工业出版社,2000.
[10] 杨桂通.弹性力学简明教程[M].北京:清华大学出版社,2013.
[11] 任新意,王松涛,高慧敏,等.冷轧薄规格高强钢表面斜纹缺陷分析与控制[J].中国冶金,2017(10):59-64.
[12] 张,杨荃,何安瑞,等.连续退火线平整机辊形优化[J].工程科学学报,2012(3):342-347.
[13] 于孟,张清东,周俊,等.硬质薄规格镀锡板平整轧制变形行为与辊形技术[J].工程科学学报,2010(5):657-662.