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大方坯连铸温度场动态仿真系统的开发与应用王国新1,张家泉1,王玉昌2,赵殿清2(1.北京市北京科技大学 冶金与生态工程学院2.包头钢铁(集团)有限责任公司)摘 要:基于凝固传热学基本理论与对大方坯连铸工况进行分析,建立了大方坯动态铸坯温度场跟踪模型,动态工况模型和设备与工艺参数库,开发了大方坯连铸温度场动态仿真系统.利用包钢新建大方坯连铸机仿真系统对20#,45#,U75V三个钢种在不同工况下的温度场进行了模拟.射钉实验证明,仿真结果达到工艺要求的精度,仿真系统能够真实准确地模拟连铸浇铸全过程中铸坯温度场分布,......
Modeling and Simulation of Heat Transfer in Loaded Continuous Heat Treatment Furnace () 摘要:Continuous furnaces are widely used in the heat treatment of mass-produced parts. However, the heating up process of parts in continuous furnace is still decided by experience. In this paper the heat transfer in the continuous furnace is formulated firstly. The heat balance in each zone is discussed......
挤压12道次后, 铜的平均晶粒尺寸为400nm. 关键词: 铜; 连续等径角挤压; 超细晶; 有限元模拟 中图分类号: TG379; TG376 文献标识码: A Ultra-fine grain copper prepared by continuous equal channel angular press YUN Xin-bing1, 2, SONG Bao-yun2...) Abstract: The continuous equal channel angular pressing introduced is a new method to produce ultra-fine grain(UFG) materials, which applies continuous extrusion technology in ECAP technology......
2中可看出, 施加流动控制, 弯月面区域金属运动速度明显减小, 液面波动减轻, 且随着磁感应强度增加, 效果越明显. 图1 流动控制和拉速对弯月面区域速度场影响 Fig.1 Influence of flow control and casting speed on velocity field in meniscus zone (a) -V=0.53 m/min, B... Fig.3 Influence of casting speed and flow control on velocity field in nozzle zone (a) -V=0.38 m/min, B=0 T; (b) -V=0.38 m/min, B=0.125 T; (c) -V=0.53 m/min, B=0 T; (d) -V=0.53 m/min, B=0.060 T; (e......
temperature field showed that the highest temperature which appeared on the friction surface during braking was about 463 °C. Analysis regarding thermal-stress field showed that the highest thermal... behavior; temperature field; thermal-stress field 1 Introduction C/C-SiC composites, the carbon fibers reinforced carbon and silicon carbide dual matrices composites, are a new kind of high performance......
Water modeling of mold powder entrapment in slab continuous casting moldQiaotong Lu, Rongguang Yang, Xinhua Wang, Jiongming Zhang, and Wanjun Wang Metallurgical and Ecological Engineering School.... It was found that there are mainly three types of mold powder entrapment in slab continuous casting, i.e., the entrapment caused by the shearing flow near the narrow face of mold, the entrapment caused......
Trans. Nonferrous Met. Soc. China 25(2015) 2675-2685 Horizontal continuous casting process under electromagnetic field for preparing AA3003/AA4045 clad composite hollow billets Li WU1, Hui-jun KANG2... 2015 Abstract: A modified horizontal continuous casting process under the electromagnetic field was proposed for preparing AA3003/ AA4045 clad composite hollow billets. To investigate the effect......
in a planetary ball mill. The milled nanocrystalline powders were used to coat carbon steel tubes using high velocity oxygen fuel (HVOF) thermal spraying process. The characterization of the feedstock... velocity oxygen fuel 1 Introduction In most of the thermal power station, coal is burnt to convert water into steam which has been expanded through a turbine for the generation of electricity. Coal......
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