共查询到19条相似文献,搜索用时 187 毫秒
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L.Vignolo G.DelFrate 《钢铁》2004,39(6):51-54
通过轧辊的交叉和轴向窜动的独创设计,达涅利6辊3C6^TM轧机实现了超大范围控制。除了中间辊弯辊和工作辊的正负弯辊外,轧机会在处于临界轧制状态时自动执行中间辊交叉。此外,机座还配备了工作辊轴向窜动,以便有效地控制带钢边部减薄。轧制力的有利分布,也优化了工作辊的磨损,从而降低了生产成本,提高了效率。 相似文献
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首钢6H3C单机架可逆式冷轧机组是目前世界上第一套通过中间辊交叉进行板型控制的轧机.也是世界上第一套投入工业生产的6H3C轧机。本文介绍了该机组的工艺、设备参数,技术特点,电气设备及自动化控制及生产状况,并提出了该机组可能存在的问题。 相似文献
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异步交叉轧制的轴向力研究 总被引:2,自引:0,他引:2
为阐明异步交叉轧制的轴向力特性,在自行研制的首架异步交叉轧机上进行了系统的实验研究。结果表明:在轧制过程中,支承辊和工作辊轴向皆呈非线性增长态势,且工作辊轴向力波形起伏较大,其起始时刻滞后于支承辊;交叉角和异步比等因素对工作辊轴向力Faw的的影响规律为交叉角增大,FAW增大,当交叉角大于临介交叉角以后,FAW下降、FAW随异步比增大而略有增加,在异步交叉轧制下,轧制运行无跑偏。 相似文献
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六辊3C技术—冷轧机设计新概念 总被引:1,自引:0,他引:1
N.Vazzoler 《冶金设备》2000,(4):42-46
为了适应冷轧带钢的市场需求和未来的发展趋势的需要 ,达涅利集团设计了六辊3C轧机。通过采用轧辊交叉新型设计配置六辊轧机 ,在轧制过程中实现了更高的控制能力。该种轧机通过合理利用机架传动装置提高生产灵活度和实现轧制力的合理分布 ,从而降低生产和维修费用并提高了设备生产效率。 相似文献
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六辊冷连轧机中间辊横移过程辊间接触压力分析 总被引:2,自引:0,他引:2
为了使轧机板形控制性能适应带钢规格材质变化,用于连续轧制高档冷轧薄带钢的六辊冷连轧机大都采取中间辊可横移技术。但是,中间辊横移必定使辊间接触压力分布更不均匀,导致出现接触压力尖峰。在中间辊横移过程中,辊间接触压力和横移阻力都会随横移速度的变化而发生改变,并可能导致辊间接触压力在轧辊端部形成更大的压力尖峰,从而造成轧辊磨损不均匀并缩短轧辊的使用周期。通过建立有限元仿真模型,以仿真模拟获得中间辊横移过程中辊间接触压力的变化规律后,优化设计轧辊辊形,并且提出使用非对称弯辊力的方法,实现了辊间接触压力的分布均匀化,降低了辊间接触压力尖峰值,并延长了轧辊的使用寿命。 相似文献
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宝钢1420冷轧机在轧制汽车板时,5/4机架间经常发生张力超调,张力超调下轧制的带钢占40%以上.造成该张力超调的主要原因是5/4机架间的张力环存在缺陷和4机架中工作辊与中间辊间出现打滑.文章提出了解决张力超调的方法和措施,在实际生产中实施后,处在张力超调下轧制的带钢量从40%以上减少到2%左右. 相似文献
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The calculation of force for a roll system has significant effects on cold rolled thin strip gauge adjustment of a 20-high Sendzimir mill. According to the rolling parameters and rolling plans of a ZR-22BS-42 Sendzimir mill in a silicon steel factory, the contact force and the resultant force of each roll in the roll system were calculated both in the static state and in the rolling state through C++ programs. It was found that the contact force between the second intermediate driven roll and the back-up rolls B and C was much lower than that between the other rolls in static state. The results also demonstrated that the resultant force are 59. 5% — 62%, 37. 7% —10. 3%, 87. 1% — 88. 7% and 53. 9% — 56. 7% of the rolling force at the second intermediate driven roll, the second intermediate idler roll, the back-up rolls B and C and the back-up rolls A and D, respectively. It was also revealed that the minimum contact force generated between the first intermediate roll and the second intermediate idler roll is 206. 7 kN on the first rolling pass, and that on the second rolling pass, the minimum contact force generated between the second intermediate driven roll and the back-up roll C is 470. 7 kN. 相似文献
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Roll crossing can be utilized as a method for profile and flatness control in a rolling mill. The estimation of the profile adjusting range by calculating the elastic roll-gap deflection reveals that roll crossing has a similar effect on the profile as positive bending. Under the assumptions made in the calculations roll crossing is an effective method as profile and crown actuator. Furthermore the effect of roll crossing on the flatness is qualitatively confirmed by rolling trials. Beyond the investigation of the effectiveness of roll crossing as profile and flatness actuator a 3-dimensional finite element simulation of the material flow in the roll gap was done. The results of these simulations, which were confirmed by rolling trials as well, showed that the rolled specimen warps out of the passline due to the crossing of the work rolls whereas the influence of roll crossing on the distribution of local plastomechanical values is negligible. Force components in axial direction are induced by crossing the rolls, which have to be compensated by additional bearings. For the determination of the amount of axial forces rolling trials on a laboratory four-high mill were carried out. 相似文献