Study on inhibition of clogging of submerged entry nozzle by electric pulse technology
YANG Xin1, ZHANG Yuan-yuan1, HE Zhi-Jun1, ZHANG Jun-hong1, ZHAN Wen-long1, YU Jing-kun2
1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China; 2. School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
Abstract:The spontaneous electric field exists on the surface of the submerged entry nozzle during the pouring process,which will cause interface effects such as electrowetting and electrochemical reaction to seriously affect the clogging of the nozzle. Industrial tests were carried out on the continuous casting platform,and the results showed that the thickness of clogging in the inner cavity of the nozzle can reach 10 mm without electric field treatment,and the tapping hole is seriously blocked; After the electric pulse treatment,the inner cavity of the nozzle is smooth,and there are no obvious clogging in the tapping hole. The interface effect caused by the spontaneous electric field on the surface of the nozzle can be weakened or eliminated by electrical pulse treatment so that the clogging of the nozzle is effectively suppressed and the service life of the nozzle is extended.
杨鑫, 张媛媛, 何志军, 张军红, 湛文龙, 于景坤. 基于电脉冲技术抑制连铸水口结瘤堵塞的研究[J]. 钢铁, 2021, 56(4): 52-56.
YANG Xin, ZHANG Yuan-yuan, HE Zhi-Jun, ZHANG Jun-hong, ZHAN Wen-long, YU Jing-kun. Study on inhibition of clogging of submerged entry nozzle by electric pulse technology[J]. Iron and Steel, 2021, 56(4): 52-56.
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