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Gimaletdinov R. H. Gulakov A. A. Tukhvatulin I. H. Petrov A. V. Filippov V. S. 《Metallurgist》2021,65(1-2):160-168
Metallurgist - Within enterprises manufacturing rolled product important tasks are improvement of manufacturing efficiency and reducing cost. Improving production efficiency and reducing costs are... 相似文献
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或工艺参数选择。但是作为技术探讨,仍列出基本工艺参数共参考。1.3.1砂轮速度>粗、精磨钢质轧辊25~35米/秒;>粗、精磨冷硬铸铁轧辊20~25米/秒。1.3.2轧辊速度>粗磨时30~50米/分; 相似文献
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T Roll vortices, which often appear when cold air outbreaks over warm ocean surfaces, are an important system for energy and substance exchange between the land surface and atmosphere. Numerical simulations were carried out in the study to simulate roll vortices in the convective boundary layer (CBL). The results indicate, that with proper atmospheric conditions, such as thermal instability in the CBL, stable stratification in the overlying layer and suitable wind shear, and a temperature jump between the two layers in a two-layer atmosphere, convective bands appear after adding initial pulses in the atmosphere. The simulated flow and temperature fields presented convective bands in the horizontal and roll vortices in the crosswind section. The structure of the roll vortices were similar to those observed in the cloud streets, as well as those from analytical solutions. Simulations also showed the influence of depth and instability strength of the CBL, as well as the stratification above the top of the CBL, on the orientation spacing and strength of the roll vortices. The fluxes caused by the convective rolls were also investigated, and should perhaps be taken into account when explaining the surface energy closure gap in the CBL. 相似文献
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在建立弯辊液压系统的数学模型的基础上,采用伺服阀加压力传感器控制液压缸实现对板形的控制,并通过仿真分析液压缸的控制效果。 相似文献
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介绍了复合粘结硬质合金轧辊的结构特点、技术参数,对复合粘结硬质合金轧辊使用情况进行了分析,总结了在棒材生产线应用所取得的效果,并提出了在使用复合粘结硬质合金轧辊过程车削的方法和提高轧辊使用寿命的措施。 相似文献
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论述工作辊消耗高的原因、改进措施及实施效果,通过优化工作辊材质和硬度,改进操作,提高磨削质量,优化辊型设计和完善轧辊的无损检测,保证轧辊使用安全,最终达到保证正常生产、提高产品质量、降低生产成本的目的。 相似文献
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压型板辊弯成型过程数值模拟 总被引:10,自引:0,他引:10
针对压型板辊弯成型过程中带材变形复杂、成型规律难于掌握的问题,应用显式动态有限元模块ANSYS/LS-DYNA对压型板辊弯成型的全过程进行模拟分析。动态分析板带从前一架进入下一架的成型过程,板料可在两架间同时各自变形。发现应力的集中区域存在于变形过渡区和辊缝中心线下的主要变形区;横向弯曲应变大都集中于弯曲角处,应变值随成型角增大而增大。模拟结果证实通过有限元模拟探索冷弯成型规律的可行性。该方法对于分析其他复杂断面型钢的成型特点具有一定的理论和实际意义。 相似文献
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双边剪夹送辊在实际生产中的运动分析 总被引:1,自引:0,他引:1
文章从理论上分析了夹送辊夹持钢板时的运动情况,结合夹送辊运输钢板的状态解释了几种常见钢板跑偏现象,为夹送辊的跑偏调整提供了一些理论依据。 相似文献
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