共查询到19条相似文献,搜索用时 62 毫秒
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本文分析了南钢2500mm四辊轧机辊系结构特点,并进行了辊系强度计算,结果表明其安全系数大于规定数值,完全满足技术条件要求。 相似文献
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介绍轧机机座弹跳组成,及轧机刚度定义,以φ300短应力线轧机刚度为例进行详细计算,凸显了短应力线轧机高刚度优势. 相似文献
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动态设定型变刚度厚控系统在2400中板轧机上的应用 总被引:1,自引:0,他引:1
改进的绝对值式动态设定型AGC在2400中板轧机上应用,使人工经验与控制方式结合起来,达到了同板差与异板差同时控制的目的,取得了较好的技术经济效果。 相似文献
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在测量和计算了产生轧钢机主传动系统扭振故障的轧制力矩基础上,分析了引起轧钢机主传动系统扭振的原因;设计了扭振监测、诊断和控制系统,这个系统在钢铁企业的应用取得了令人满意的效果。 相似文献
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In this paper, a method is proposed to extract the most representative surface topography from n surfaces. A criterion is proposed that allows rejecting irrelevant topographical maps. Then, this methodology is applied on the hot rolling process, on replicas of industrial surfaces. These analyses have shown the major difference between ICDP and HSS roll behavior in terms of topography. Carbides oxidation observations correlates lab studies from bibliography. We confirm that this methodology is relevant to industrial investigations, especially on phenomena requiring non-destructive protocol. 相似文献
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在分析了轧机在轧制过程中的力能参数基础上,测量并计算了500mm轧机的轧制力和轧制力矩。探讨了用力学模型确定轧制力的方法。用力学理论计算了轧制力和轧制力矩,并对轧制力和轧制力矩进行了比较分析。结果表明计算结果可以较好地反映实际轧制过程的特征。 相似文献
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Three dimensional thermal mechanical coupled simulation during hot rolling of aluminium alloy 3003 总被引:2,自引:0,他引:2
Rolling passes of a pass schedule supplied by an aluminium company and containing reliable measured data of roll load and torque is considered. Percentage reductions range from 6% to 20% and are analysed by a commercial thermo-mechanical coupled FEM program FORGE3 V5.3. An inverse analysis method is adopted to match the calculated rolling force and torque with the measured rolling force and torque by treating the friction law and the friction coefficient as free parameters. Three widely accepted friction laws are investigated; Tresca friction, Coulomb friction and viscoplastic friction. The use of viscoplastic friction is shown to yield both more reliable and more accurate results than other models. Significantly the friction coefficient can be traced to remain constant throughout the pass schedule of the breakdown rolling. The contact pressure distribution is then studied with different thickness reductions and compared with published experimental results. The predicted and experimental agreement is such that the load calculation can be regarded as satisfactory. Acceptable agreement is also obtained with the measured torque values. The distribution of equivalent strain, temperature and the stress in the roll gap and the lateral profile are discussed. 相似文献
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采用更新的Langrange方法及大变形热力耦合有限元法对热轧过程进行了热力耦合仿真分析,经过多道次轧制仿真后,得出了轧件的温度场和轧制力分布以及每道次轧件入口与出口温度大小及轧制力的大小,并进行了现场工业实验对仿真结果进行了验证,计算结果表明,仿真所得结果与实测结果误差很小,均在5%之内,从而证明模型是正确的,能够很好的运用于热轧过程的参数计算和研究,并对以后热轧工艺参数匹配规律研究以及板形控制研究提供重要的分析平台和起到重要的指导作用. 相似文献
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自动扶梯金属结构的强度与刚度分析 总被引:3,自引:3,他引:0
在采用有限元方法艰自动扶梯金属结构进行计算的基础上,对使用角钢和方管为主要构件的两种结构进行了强度与刚度分析比较,寻求合理的结构形式和最亿的性能价格比。计算结果表明,对于公共交通型和提升高度较高的普通型自动扶梯,宜选用强度、刚度的抗扭性较好的方管钢结构。 相似文献
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单机架可逆轧机在国内外轧钢厂广泛应用,但其结构形式各不相同,介绍一种四辊轧机,对其结构、工作原理进行阐述。 相似文献