Temperature field evolution and heat transfer during continual local induction cladding
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Temperature field evolution and heat transfer during continual local induction cladding LIU Si-yu(刘思宇)1, 2, QIN Xun-peng(秦训鹏)1, 2, ZHANG Jin-peng(张进朋)1, 2, ZHAN Jun(詹军)3 1. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China; 2. Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan 430070, China; 3. Hubei Sanhuan Intelligent Technology Co., Ltd., Wuhan 430074, China © Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020 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. Key words: profile repair; induction cladding; continual motion; temperature field evolution; heat transfer Cite this article as: LIU Si-yu, QIN Xun-peng, ZHANG Jin-peng, ZHAN Jun. Temperature field evolution and heat transfer during continual local induction cladding [J]. Journal of Central South University, 2020, 27(5): 1572−1586. DOI: https://doi.org/ 10.1007/s11771-020-4391-1.
1 Introduction High-frequency induction cladding is a process to heat alloy powder in the prefabricated layers with different compositions, magnetic permeabilities by means of the electromagnetic induction eddy current so that the melted alloy powder and surface of the workpiece substrate may be metallurgically bonded and a cladding layer with better performances shall be obtained [1]. The threedimensional point type continual induction cladding, which is different from the traditional induction
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cladding processes for only performance of heating plane or cylindrical substrates, may be utilized to perform local continual cladding of threedimensional complex space faces, and it is a new process for local repairing of curved parts [2]. The current methods for preparing composite coatings primarily include oxyacetylene flame cladding, arc spraying, induction cladding, laser cladding, laser induction composite cladding and plasma cladding [3−5]. Moreover, the induction cladding technology takes advantages of internal heat source heating, fast heating rate
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