Influence of half open coil structures on overall continuous induction heating of variable cross section pipe before quenching

IF 6.1 2区 工程技术 Q2 ENERGY & FUELS
Yaya zhao , Simeng Jiang , Li Wang , Kaixuan Chen , Yanlin Wang , Bo Dou , Xiaohua Chen , Zidong Wang
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引用次数: 0

Abstract

Resistance heating of variable cross-section pipes before quenching can cause austenite grain coarsening, leading to inferior properties in thin-wall segments. This method also suffers from low heating efficiency, high energy consumption, and is time-consuming. This study compared the effects of variable cross section (VCS) and equal cross section (ECS) coil structures on overall continuous induction heating, aiming to investigate rapid and uniform heating solutions for this type of pipe. The results showed that the workpiece could be heated to the quenching temperature of 890 °C within 30 min using both coils. The ECS coil demonstrated superior heating efficiency, while the VCS coil exhibited better heating quality along the axial direction. Optimizations in VCS coil, including dynamic power control and insulation measures significantly improved the heating quality, with the final temperature distribution of the workpiece basically meeting the quenching requirements. Furthermore, an induction heating experiment was conducted to validate the reliability of the analysis model, showing good alignment with the simulated results. Overall, the application of half-open coil induction heating for variable cross-section pipes is feasible, offering a high efficiency and qualified heating quality. However, this technology is better suited for large-scale manufacturing, as each coil structure can only match one product specification; otherwise, it could significantly increase equipment costs. Additionally, for heating large workpieces, the workshop should have sufficient electrical load capacity to meet the power supply requirements.
半开式线圈结构对变截面管淬火前整体连续感应加热的影响
变截面管材淬火前的电阻加热会导致奥氏体晶粒粗化,导致薄壁管件性能较差。该方法还存在加热效率低、能耗高、耗时长等缺点。本研究比较了变截面(VCS)和等截面(ECS)线圈结构对整体连续感应加热的影响,旨在探索这类管道快速均匀加热的解决方案。结果表明,两种线圈均可在30 min内将工件加热至890℃的淬火温度。ECS线圈表现出较好的加热效率,而VCS线圈表现出较好的轴向加热质量。对VCS线圈进行优化,包括动态功率控制和绝缘措施,显著提高了加热质量,最终工件的温度分布基本满足淬火要求。通过感应加热实验验证了分析模型的可靠性,与仿真结果吻合较好。总之,采用半开式线圈感应加热变截面管道是可行的,加热效率高,加热质量合格。然而,这种技术更适合大规模生产,因为每个线圈结构只能匹配一种产品规格;否则,可能会大大增加设备成本。此外,对于加热大型工件,车间应具有足够的电气负荷能力,以满足供电要求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Applied Thermal Engineering
Applied Thermal Engineering 工程技术-工程:机械
CiteScore
11.30
自引率
15.60%
发文量
1474
审稿时长
57 days
期刊介绍: Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.
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