弯月面热障涂层方法对结晶器传热及铸坯振痕形貌的影响

doi:10.11900/0412.1961.2015.00041

金属学报

2015, Vol. 51

Issue (9): 1145-1152 DOI: 10.11900/0412.1961.2015.00041

本期目录 | 过刊浏览

弯月面热障涂层方法对结晶器传热及铸坯振痕形貌的影响

侯晓光^1,²,王恩刚¹(

),许秀杰¹,邓安元¹,王万林³

2 宝山钢铁股份有限公司, 上海 201900
3 中南大学冶金与环境学院, 长沙 410083

EFFECT OF THERMAL BARRIER COATINGS ABOVE MOULD MENISCUS ON MOULD HEAT TRANSFER AND OSCILLATION MARK MORPHOLOGY OF STRANDS

Xiaoguang HOU^1,²,Engang WANG¹(

),Xiujie XU¹,Anyuan DENG¹,Wanlin WANG³

1 Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110819
2 Baoshan Iron & Steel Co., Ltd., Shanghai 201900
3 School of Metallurgy and Environment, Central South University, Changsha 410083

引用本文:

侯晓光,王恩刚,许秀杰,邓安元,王万林. 弯月面热障涂层方法对结晶器传热及铸坯振痕形貌的影响[J]. 金属学报, 2015, 51(9): 1145-1152.
Xiaoguang HOU, Engang WANG, Xiujie XU, Anyuan DENG, Wanlin WANG. EFFECT OF THERMAL BARRIER COATINGS ABOVE MOULD MENISCUS ON MOULD HEAT TRANSFER AND OSCILLATION MARK MORPHOLOGY OF STRANDS[J]. Acta Metall Sin, 2015, 51(9): 1145-1152.

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摘要:

提出了一种在结晶器弯月面上方涂敷热障涂层, 来抑制弯月面传热, 进而控制铸坯振痕形成的新方法, 称为弯月面热障涂层方法(TBCMM). 利用模拟结晶器弯月面一维传热的测试装置, 研究了热障涂层在结晶器弯月面的不同位置对传热的影响规律, 分析了热障涂层抑制振痕形成的机理; 在浸铸式连铸模拟机上, 分别进行了结晶器有、无热障涂层的低熔点Sn-12.5%Pb合金的模拟连铸实验, 获得了实测的弯月面温度波动曲线和铸坯, 对比分析了弯月面热流和铸坯表面振痕形貌, 证实了提出的TBCMM的有效性; 最后, 在中试实验连铸机上, 研究了热障涂层对钢连铸坯表面质量的影响, 获得了表面振痕减轻甚至消除的连铸钢坯.

关键词 ：热障涂层, 连铸, 弯月面, 振痕

Abstract：

Oscillation marks are closely related to the surface quality of bloom. Excellent surface quality of bloom is essential assurance of the technology of continuous casting and rolling. The improvement of heat transfer process through mold is beneficial to alleviate oscillation marks. A new method of inhibiting formation of oscillation marks in continuous casting, namely spraying or embedding thermal barrier coatings above mold meniscus (TBCMM) was proposed, by which the temperature and heat flux fluctuation of meniscus was reduced, and then the surface quality of strands was improved. Using an one-dimensional heat transfer simulating apparatus, the effect of location of thermal barrier coatings on heat transfer near meniscus was investigated, and the possible mechanism of TBCMM on inhibiting formation of oscillation marks was also discussed. With a dip simulator for continuous casting, lower melt point Sn-12.5%Pb alloy was casted with thermal barrier coating (TBC) and without TBC molds respectively, and the temperature fluctuation was also measured. The heat flux near meniscus in mold and the oscillation marks morphology on strands confirm the effectiveness of the proposed TBCMM. Finally, in a pilot continuous caster, casting experiments of steel with TBCMM was conducted, and the oscillation marks on billet surface were alleviated or removed.

Key words： thermal barrier coating continuous casting meniscus oscillation mark

基金资助:*国家自然科学基金项目50834009和51474065, 教育部重大科技项目311014, 以及高等学校学科创新引智计划项目B07015资助

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https://www.ams.org.cn/CN/10.11900/0412.1961.2015.00041 或 https://www.ams.org.cn/CN/Y2015/V51/I9/1145

图1 结晶器一维传热测试装置示意图

图2 热障涂层在结晶器不同位置的示意图

图3 浸铸模拟机结晶器与热电偶分布示意图

图4 中试连铸机结晶器示意图

图5 不同位置热障涂层对Cu模实时温度的影响

图6 不同位置热障涂层对Cu模实时热流的影响

表1 Cu模结晶器的热阻

图7 Sn-12.5%Pb合金浸铸实验实时温度曲线

图8 Sn-12.5%Pb合金2次浸铸实验结晶器的输入热流曲线

图9 Sn-12.5%Pb合金2次浸铸实验获得的铸坯形貌

图10 弯月面热障涂层抑制铸坯振痕形成的作用机理示意图

图11 钢连铸坯表面振痕形貌

[1]	Brimacombe J K, Sorimachi K. Metall Trans, 1977; 8B: 489
[2]	Mintz B. ISIJ Int, 1999; 39: 833
[3]	Harada S, Tanaka S. ISIJ Int, 1990; 30: 310
[4]	Hwang B, Lee H S, Kim Y G, Lee S. Mater Sci Eng, 2005; A402: 177
[5]	Sengupta J, Thomas B G, Shin H J, Lee G G, Kim S H. Metall Trans, 2006; 37A: 1597
[6]	Takeuchi E, Brimacombe J K. Metall Trans, 1985; 16B: 605
[7]	Badri A, Natarajan T T, Snyder C C, Powers K D, Mannion F J, Cramb A W. Metall Trans, 2005; 36B: 360
[8]	Badri A, Natarajan T T, Snyder C C, Powers K D, Mannion F J, Cramb A W. Metall Trans, 2005; 36B: 379
[9]	Lei Z S, Ren Z M, Zhang B W, Deng K. Acta Metall Sin, 2002; 38: 8 (雷作胜, 任忠鸣, 张邦文, 邓康. 金属学报, 2002; 38: 8)
[10]	Gu K Z, Wang W L, Wei J, Matsuura H, Tsukihashi F, Sohn I, Dong J M. Metall Trans, 2012; 43B: 1393
[11]	Gu K Z, Wang W L, Zhou L J, Ma F J, Huang D Y. Metall Trans, 2012; 43B: 937
[12]	Zhou L J, Wang W L, Ma F J, Li J, Wei J, Matsuura H, Tsukihashi F. Metall Trans, 2012; 43B: 354
[13]	Wang W L, Zhou L J, Gu K Z. Met Mater Int, 2010; 16: 913
[14]	Wang W L, Gu K Z, Zhou L J, Ma F J, Sohn I, Min D J, Matsuura H, Tsukihashiet F. ISIJ Int, 2011; 51: 1838
[15]	Wang W L, Cramb A W. AIST Trans, 2008; 5: 155
[16]	Wang W L, Cramb A W. ISIJ Int, 2005; 45: 1864
[17]	Zhang H H, Wang W L, Zhou D, Ma F J, Lu B X, Zhou L J. Metall Trans, 2014; 45B: 1038
[18]	Zhou D, Wang W L, Zhang H H, Ma F J, Chen K, Zhou L J. Metall Trans, 2014; 45B: 1048
[19]	Yin H B, Yao M. Acta Metall Sin, 2005; 41: 638 (尹合壁, 姚曼. 金属学报, 2005; 41: 638)
[20]	Wang X D, Zang X Y, Du F M, Kong L W, Yao M. Foundry Technol, 2014; 35: 1474 (王旭东, 臧欣阳, 杜凤鸣, 孔令伟, 姚曼. 铸造技术, 2014; 35: 1474)
[21]	Qing L J, Wang X R, Li J, Sun L G. Hebei Enterprise, 2013; (9): 90 (齐力军, 王鑫荣, 李景, 孙立根. 河北企业, 2013; (9): 90)

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