Transient Simulations and Experiments on Compound Roll Produced by Electroslag Remelting Cladding
Transient Simulations and Experiments on Compound Roll Produced by Electroslag Remelting Cladding
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电渣重熔熔覆复合轧辊瞬态模拟与实验
DOI：
10.1007/s11663-020-02019-z
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发表时间：
2021-01
期刊：
影响因子：
--
通讯作者：
Yu-Long Cao
中科院分区：
文献类型：
--
作者：
Zhi-Wen Hou;Yan-Wu Dong;Zhou-Hua Jiang;Ke-An Yao;Yu-Shuo Li;Yu-Long Cao
采用动网格技术建立电渣重熔熔覆过程的瞬态数值模型，研究外加功率对熔覆层厚度沿着复合辊高度方向均匀性的影响。利用ANSYS参数化设计语言和Fluent仿真软件对多物理场进行求解。模拟结果表明，芯棒从渣池中吸收热量（Qmsi），在芯棒表面形成熔化层。芯轴和包覆层之间足够的冶金结合质量通过熔融层与包覆层的熔池的紧密接触来确认。此外，在早期和后期阶段分别使用高功率和低功率改善了熔化层深度沿着高度的均匀性。当在早期施加大功率（235 kW）时，未冶金结合的复合辊的高度降低到52 mm。在熔化层深度沿高度沿着增加到6 mm后，功率降低到187 kW。渣温和Qmsi迅速降低，因此，熔化层深度沿高度先减小后沿着略有增加。熔融层深度在52至260 mm的高度范围内是可接受的。通过半工业性试验得到的熔层深度沿着复合辊高的变化趋势与模拟结果一致，证明了该工艺的可靠性。此外，拉伸和夏比冲击试验结果表明，良好的冶金结合质量。本文研究的工艺有望有效地用于工业生产具有均匀熔化层深度的复合辊。
In this study, a comprehensive transient numerical model of electroslag remelting cladding process with dynamic mesh technology is simulated to study the effect of the applied power on the uniformity of melting layer depth along the height of the as-prepared compound roll. The multi-physics fields are solved by the ANSYS Parametric Design Language and Fluent simulation software. The simulation results show that the mandrel absorbs heat (Qmsi) from the slag pool and the melting layer is formed on the mandrel surface. A sufficient metallurgical bonding quality between the mandrel and the clad is confirmed by the close contact of the melting layer with the molten bath of the clad. In addition, the use of high and low power during the early and later stages, respectively, improves the uniformity of the melting layer depth along the height. When high power (235 kW) is applied during the early stage, the height of the compound roll without metallurgical bonding decreases to 52 mm. After the melting layer depth increases to 6 mm along the height, the power decreases to 187 kW. The slag temperature andQmsidecreases rapidly, and consequently, the melting layer depth initially decreases and then slightly increases along the height. The melting layer depth is acceptable within height of 52 to 260 mm. The change tendency of the melting layer depth along the height of the compound roll obtained by the semi-industrial experiment is in agreement with the simulation results, proving the reliability of the process. Moreover, the results of tensile and Charpy impact tests indicate good metallurgical bonding quality. The process investigated in this paper is expected to be efficient for industrial production of the compound rolls with a uniform melting layer depth.
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影响因子：
3.5
作者：
Yongmoon Lee;Taekyung Lee;B. H. Kim;C. Lee
通讯作者：
Yongmoon Lee;Taekyung Lee;B. H. Kim;C. Lee
DOI：
10.1017/cbo9781139207249.009
发表时间：
2012
期刊：
--
影响因子：
--
作者：
W. Marsden
通讯作者：
W. Marsden
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DOI：
10.1007/s11663-019-01690-1
发表时间：
2019-12-01
影响因子：
3
作者：
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通讯作者：
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影响因子：
3.4
作者：
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通讯作者：
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DOI：
10.1016/j.jmatprotec.2009.10.017
发表时间：
2010-02-01
影响因子：
6.3
作者：
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通讯作者：
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