EFFICIENCY AND INFLUENCING FACTORS OF ELECTROMAGNETIC STEEL-TEEMING TECHNOLOGY

doi:10.3724/SP.J.1037.2009.00848

Acta Metall Sin

2010, Vol. 46

Issue (5): 634-640 DOI: 10.3724/SP.J.1037.2009.00848

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EFFICIENCY AND INFLUENCING FACTORS OF ELECTROMAGNETIC STEEL-TEEMING TECHNOLOGY

GAO Ao¹⁾; WANG Qiang¹⁾; LI Dejun¹⁾; JIN Baigang^{1; 2)}; WANG Kai¹⁾; HE Jicheng¹⁾

1) Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education); Northeastern University; Shenyang 110819
2) Bayuquan Iron and Steel Subsidiary; Angang Steel Company Limited; Yingkou 115007

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GAO Ao WANG Qiang LI Dejun JIN Baigang WANG Kai HE Jicheng. EFFICIENCY AND INFLUENCING FACTORS OF ELECTROMAGNETIC STEEL-TEEMING TECHNOLOGY. Acta Metall Sin, 2010, 46(5): 634-640.

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Abstract

A new method (electromagnetic steel-teeming method) using electromagnetic induction heating in slide-gate was proposed to overcome the disadvantage of the pollution of the traditional nozzle sand on the molten steel. The basic idea of this new process is to melt part of or the whole of the new ladle well-packing materials (i.e. Fe-C alloy with similar composition of the molten steel), which became the substitute of the traditional nozzle sand, and achieved smoothly molten steel-teeming. Experimental and numerical simulation methods were employed to investigate the surface temperature of the upper nozzle where the Fe-C alloy was used to replace the traditional nozzle sand. The calculated temperature is consistent with the experimental results. In addition, the effects of the induction parameters such as current intensity, frequency and diameter of the coil on teeming time were investigated. The results showed that the teeming time was decreased with the increases of current intensity and frequency, but with the decrease of coil diameter. The order of the factors affecting the teeming time is current intensity, frequency and diameter of the coil. The best parameters were found under the conditions of this research. The experimental results indicated that automatically teeming of the ladle would be achieved by using the electromagnetic steel-teeming technology.

Key words: nozzle sand electromagnetic metallurgy clean steel numerical simulation heat transfer

Received: 18 December 2009

Fund:

Supported by the Science and Technology Program of Liaoning Province (No.2008221015), Liaoning Bai Qian Wan Talents program, and the {\footnotesize\it 111} Project (No.B07015)

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https://www.ams.org.cn/EN/10.3724/SP.J.1037.2009.00848 OR https://www.ams.org.cn/EN/Y2010/V46/I5/634

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