共查询到18条相似文献,搜索用时 62 毫秒
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应用MARC/autoforge商用有限元软件,对长方形轧件在热轧粗轧过程的宽度变形过程进行热力耦合模拟。简介了宽展的种类及其组成,模拟研究中主要计算了板坯在粗轧过程中的宽展量。分析计算说明,采用有限元模拟的方法可以较好地反映板坯宽度变形的实际情况。 相似文献
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热轧板厂立辊采用短行程控制技术对热轧板材进行头尾宽度控制,通过对立辊轧制时的头尾辊缝进行调整来改善头尾形状,从而提高成材率。辊缝的调整主要是通过L1的跟踪执行、L2的模型计算及操作工微调步骤三个方面来实现。 相似文献
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为改善中厚钢板轧制平面形状,有效控制窄板坯轧制宽中厚钢板形度,减少切边、切员耗,秦板公司结合装机讥笑拈工了发立辊轧制新工艺实施立辊挤 板坯头尾和钢板边部进行修正轧制了中厚钢板轧制平面形状,减少了切损,提高了钢材综合成材率1.5~3.0%,取得较好效果。 相似文献
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厚板轧制平面形状控制和立辊轧制技术 总被引:2,自引:0,他引:2
本文介绍了国外厚板轧机轧制厚板的平面形状控制技术、采用立辊的轧制技术,及其应用效果。目的在于使我国在厚板轧机设计和生产中借鉴。 相似文献
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Finite Element Simulation of Hot Strip Continuous Rolling Process Coupling Microstructural Evolution 总被引:2,自引:0,他引:2
Using the nonlinear rigid viscoplastic finite element method (FEM), a finite element simulation of the hot strip continuous rolling process was done, which completely integrates different phenomena such as the metallurgical behavior of the strip and the thermo mechanics in the strip based on the physical metallurgical microstructural evolution law. By combining with the process parameters of certain 2 050 mm hot strip rolling, an actual rolling process of low carbon steel SS400 was simulated using the FEM model. Based on the simulation results, the distributions of the strain field, the temperature field, and the microstructure were presented. Meanwhile, the simulated rolling force, temperature, and microstructure are in good agreement with the measured results. 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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为了提高带钢宽度控制精度,开发了热连轧带钢的自动宽度控制技术。在对头尾短行程控制(SSC)和自动宽度控制(AWC)研究的基础上,采用了基于模糊PID控制器的轧制力反馈控制系统,用以调节立辊辊缝。仿真结果和现场应用情况表明,模糊PID控制使成材率由94%提高到97%。 相似文献