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Numerical simulation of 3D electromagnetic–thermal phenomena in an induction heated slab

《钢铁研究学报:英文版》2020年 第4期 | He-ping Liu Xian-hui Wang Liang-ying Si Jian Gong   Central Iron and Steel Research Institute Beijing 100081 China Shougang Zhixin Qian’an Electromagnetic Material Co. Ltd. Qian’an 064404 Hebei China
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摘 要:A mathematical model was developed to get an insight into 3D electromagnetic–thermal phenomena in an induction heated steel slab with a large width/thickness ratio by solving a fully coupled Maxwell equations and energy conservation equation.The spatial heat radiation between the slab surface and the refractory wall in an induction furnace was considered.The electromagnetic induction and temperature distribution features inside the slab with time evolution were described.The effects of electromagnetic induction parameters,thermal conductivity of the material and process parameters on the induction heating process were theoretically examined.Numerical results show that the spatial distribution of induction heat generation inside the slab is non-uniform.The high work frequency and the low heat conductivity of slab increase the non-uniformity of slab induction heating process.The radiative heat loss and heat transfer between the slab and the metal parts used for holding the slab have an important effect on the slab surface temperature.It is necessary to separately control the current input in the multi-layer coil windings along the height direction of furnace and adopt the multi-step heating strategies with time evolution to improve the homogenization of the slab temperature.
【分 类】【工业技术】 > 金属学与金属工艺 > 金属学与热处理
【关键词】 SLAB Electromagnetic feld Induction heating Numerical simulation
【出 处】 《钢铁研究学报:英文版》2020年 第4期 420-432页 共13页
【收 录】 中文科技期刊数据库