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| Analysis on stopper rod erosion mechanism and improvement for aluminum bearing cold heading steel |
| XU Tao，ZOU Chang-dong，ZHAO Jia-qi，LIU Fei |
| （Institute of Research of Iron and Steel of Jiangsu Province（Shasteel），Zhangjiagang 215625，Jiangsu，China） |
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Abstract The cause of stopper rod erosion and improving measures have been presented by analyzing the materials of stopper refractory，observing the element distribution within the erosion layer and the thermodynamic calculation. The research results show that the main reason for the stopper rod erosion was the high mass of C and SiC in the stopper rod refractory and the calcium-aluminates with low melting point produced by the reaction of high persent [Ca] in the liquid steel and Al2O3，SiO2，C in the stopper rod refractory，and the stopper rod erosion can dramatically be reduced by adjusting calcium treatment and replacing magnesia carbon stopper rod refractory. Through these improving measures， the working life of stopper increased from 286-824 min to 460-1 020 min，the average working life increased from 495 min to 802 min，the problem of stopper rod erosion has been basically solved.
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Received: 18 May 2016
Published: 09 December 2016
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| [1] |
I L.M. Aksel'rodImproving the endurance of graphite-containing submerged nozzles for CCM[J].Refractories and Industrial Ceramics, 1996, 37(5,6):207-
|
| [1] |
I L.M. Aksel'rodImproving the endurance of graphite-containing submerged nozzles for CCM[J].Refractories and Industrial Ceramics, 1996, 37(5,6):207-
|
| [2] |
孙毅杰，刘晓峰，高祝兵等．钢水可浇性引起连铸机非计划断浇原因分析[J]，连铸，2011(4)：38．
|
| [2] |
孙毅杰，刘晓峰，高祝兵等．钢水可浇性引起连铸机非计划断浇原因分析[J]，连铸，2011(4)：38．
|
| [3] |
SUN Yi-jie, Liu Xiao-feng, Gao Zhu-bing, et al.Analysis for casting machine casting off of non-program caused by pouring of molten steel [J].Continuous Casting，2011(4)：38.
|
| [3] |
SUN Yi-jie, Liu Xiao-feng, Gao Zhu-bing, et al.Analysis for casting machine casting off of non-program caused by pouring of molten steel [J].Continuous Casting，2011(4)：38.
|
| [4] |
Yoshiaki KUSANO, Yuji KAWAUCHI, MasamiWAJIMA, et al.Calcium treatment technologies for special steel bars and wireRods[J].ISIJ International, 1996, 36(Suppl):455-459
|
| [4] |
Yoshiaki KUSANO, Yuji KAWAUCHI, MasamiWAJIMA, et al.Calcium treatment technologies for special steel bars and wireRods[J].ISIJ International, 1996, 36(Suppl):455-459
|
| [5] |
Somnath BASU, Shiv Kumar CHOUDHARY, Narendra U.GIRASENozzle clogging behavior of Ti-bearing Al-killed ultra low carbon steel[J].ISIJ International, 2004, 44(10):1653-1660
|
| [5] |
Somnath BASU, Shiv Kumar CHOUDHARY, Narendra U.GIRASENozzle clogging behavior of Ti-bearing Al-killed ultra low carbon steel[J].ISIJ International, 2004, 44(10):1653-1660
|
| [6] |
许可． A12O3- C质整体塞棒在钙处理钢中的应用[J]，四川冶金，2012，34(1)：16-20．
|
| [6] |
许可． A12O3- C质整体塞棒在钙处理钢中的应用[J]，四川冶金，2012，34(1)：16-20．
|
| [7] |
XU Ke.The application of Alumina graphite stopper in casting calcium-treated steel[J].Metallurgy of Sichuang, 2012, 34(1):16-20
|
| [7] |
XU Ke.The application of Alumina graphite stopper in casting calcium-treated steel[J].Metallurgy of Sichuang, 2012, 34(1):16-20
|
| [8] |
Katsuhiro SASAI, YoshimasaMIZUKAM.Reaction Rate between Alumina Graphite Immersion Nozzle and low Carbon Steel [J], ISIJ International, 1995，35(1)：26-33.
|
| [8] |
Katsuhiro SASAI, YoshimasaMIZUKAM.Reaction Rate between Alumina Graphite Immersion Nozzle and low Carbon Steel [J], ISIJ International, 1995，35(1)：26-33.
|
| [9] |
Ryoji TSUJINO, Arata TANAKA, Akira IMAMURA, Daijo TAKAHASH, et al.Mechanism Immersion of Deposition of Inclusion and Nozzle of Continuous Casting[J].ISIJ International, 1994, 34(11):853-858
|
| [9] |
Ryoji TSUJINO, Arata TANAKA, Akira IMAMURA, Daijo TAKAHASH, et al.Mechanism Immersion of Deposition of Inclusion and Nozzle of Continuous Casting[J].ISIJ International, 1994, 34(11):853-858
|
| [10] |
Yang Jun, Wang Xinhua, Jiang min, et al.Effect of Calcium Treatment on Non-metallic Inclusions in Ultra-low Oxygen Steel Refined by Basicity High Al2O3 Slag[J].Journal of Iron and Steel Research International, 2011, 18(7):8-14
|
| [10] |
Yang Jun, Wang Xinhua, Jiang min, et al.Effect of Calcium Treatment on Non-metallic Inclusions in Ultra-low Oxygen Steel Refined by Basicity High Al2O3 Slag[J].Journal of Iron and Steel Research International, 2011, 18(7):8-14
|
| [11] |
苏笃星, 马建超, 赵伟杰, 等.改善低碳铝镇静钢可浇性的研究[J].上海金属, 2014, 36(3):42-46
|
| [11] |
苏笃星, 马建超, 赵伟杰, 等.改善低碳铝镇静钢可浇性的研究[J].上海金属, 2014, 36(3):42-46
|
| [12] |
SU Du-xing, Ma Jian-chao, Zhao Wei-jie, et al.Improvenment of the pourability of low carbon Al-killed steel[J].Shanghai Metals, 2014, 36(3):42-46
|
| [12] |
SU Du-xing, Ma Jian-chao, Zhao Wei-jie, et al.Improvenment of the pourability of low carbon Al-killed steel[J].Shanghai Metals, 2014, 36(3):42-46
|
| [13] |
张广智, 苏留记.连铸用复合式镁炭质塞头及水口的使用性能分析[J]. 耐火材料, 1995(6):321-323．
|
| [13] |
张广智, 苏留记.连铸用复合式镁炭质塞头及水口的使用性能分析[J]. 耐火材料, 1995(6):321-323．
|
| [14] |
Zhang Guang-zhi, Su liu-ji, et al.Analysis on service performance of compound magnesia carbon stopper head and nozzle [J]. Refractory Materials, 1995(6):321-323．
|
| [14] |
Zhang Guang-zhi, Su liu-ji, et al.Analysis on service performance of compound magnesia carbon stopper head and nozzle [J]. Refractory Materials, 1995(6):321-323．
|
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2016, Vol. 51 
