Abstract
The evolution of temperature field of the continual motion induction cladding and the depth of heat affected zone are studied in this study. A three-dimensional finite element model for the point type continual induction cladding is established to investigate temperature distributions of fixed and motion induction cladding modes. The novel inductor is designed for cladding of curved surfaces. The modeling reliability is verified by the temperature measurements. The influence of process parameters on the maximum temperature and the generation and transfer of heat are studied. Quantitative calculation is performed to its melting rate to verify the temperature distribution and microstructures. The results show that a good metallurgical bond can be formed between the cladding layer and substrate. The melting rate gradually falls from the top of the cladding layer to the substrate, and the grain size in the substrate gradually rises. The heat affected zone is relatively small compared to integral heating.
摘要
本文研究了连续运动感应熔覆层的温度场演变和热影响区的深度, 建立了点式连续移动感应熔覆的三维有限元模型以研究固定和移动感应熔覆模型的温度分布, 设计了一种适用于曲面熔覆的新感应器, 通过温度测量验证了模型的可靠性. 研究了工艺参数对最高温度的影响和热量的产生与传递. 对熔化速率进行了定量计算来验证温度的分布和显微组织的关系. 结果表明, 熔覆层与基体之间可形成良好的冶金结合, 从熔覆层顶部到基体熔化速率逐渐降低, 基体中的晶粒尺寸逐渐增大. 与整体加热相比, 连续移动局部感应熔覆热影响区相对较小.
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Foundation item: Project(51575415) supported by the National Natural Science Foundation of China; Project(2016CFA077) supported by the Natural Science Foundation of Hubei Province of China; Project(2018-YS-026) supported by the Excellent Dissertation Cultivation Funds of Wuhan University of Technology, China
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Liu, Sy., Qin, Xp., Zhang, Jp. et al. Temperature field evolution and heat transfer during continual local induction cladding. J. Cent. South Univ. 27, 1572–1586 (2020). https://doi.org/10.1007/s11771-020-4391-1
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DOI: https://doi.org/10.1007/s11771-020-4391-1