(1. 鄭州大學(xué) 材料科學(xué)與工程學(xué)院，鄭州 450001；
2. 鄭州大學(xué) 現(xiàn)代分析與計算中心，鄭州 450001)
摘 要: 哈茲列特連鑄機(jī)結(jié)晶器中帶鰭支撐輥具有強(qiáng)磁性的目的是吸附鋼帶，保持鋼帶在鑄造過程中的平整，但磁場透過鋼帶在結(jié)晶器內(nèi)部產(chǎn)生的“漏磁”將導(dǎo)致連鑄過程流場紊亂，嚴(yán)重影響后期的板帶質(zhì)量。利用矢量合成法測量磁場，并通過有限元模擬及磁流耦合分析，揭示結(jié)晶器中磁場的分布規(guī)律與鋁熔體流動的電磁制動過程，進(jìn)一步探究連鑄生產(chǎn)過程中熔體紊流可能導(dǎo)致的鑄板坯表面質(zhì)量問題，為優(yōu)化磁場、改善產(chǎn)品組織提供指導(dǎo)。
關(guān)鍵字: 鋁熔體；漏磁；哈茲列特結(jié)晶器；有限元分析
（1. School of Materials Science and Technology, Zhengzhou University, Zhengzhou 450001, China;
2. Advanced Analysis & Computation Center, Zhengzhou University, Zhengzhou 450001, China）
Abstract:The high magnetic property of support roll in Hazelett Continuous casting mold was desired to absorb the steel strip and maintain the smooth of steel strip in the casting process. But a “magnetic flux leakage” produced in the mold leads to the disorder of the flow field in continuous casting process and which has a bad effect on the quality of the late plate. A vector synthesis method of measuring magnetic field was used. By the finite element simulation and magnetohydrodynamic (MHD) analysis, the distribution of magnetic field in the crystallizer and electromagnetic braking process was revealed, which further provides guidance to optimize magnetic field and improves product structure. Finally, surface quality defect of casting blanks caused by the disorder of the flow field was explored.
Key words: aluminum melt; magnetic leakage; Hazelett continuous casting mold; finite element simulation
