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

doi:10.11900/0412.1961.2015.00041

Acta Metall Sin

2015, Vol. 51

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

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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

Cite this article:

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. Acta Metall Sin, 2015, 51(9): 1145-1152.

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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

Fund: Supported by National Natural Science Foundation of China (Nos.50834009 and 51474065), Key Project of Ministry of Education of China (No.311014) and Program of Introducing Talents of Discipline to Universities (No.B07015)

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	Xiaoguang HOU
	Engang WANG
	Xiujie XU
	Anyuan DENG
	Wanlin WANG

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https://www.ams.org.cn/EN/10.11900/0412.1961.2015.00041 OR https://www.ams.org.cn/EN/Y2015/V51/I9/1145

Fig.1 Schematic of 1D mold heat transfer measure device with infrared radiation heat source (BC—boundary condition)

Fig.2 Schematic of different positions of thermal barrier coating (TBC) on mold

Fig.3 Schematic of dip simulator mold and distribution of thermal couples

Fig.4 Schematic of pilot continuous caster mold with TBC

Fig.5 Effects of different positions of TBC on Cu mold responding temperature

Fig.6 Effects of different positions of TBC on Cu mold responding heat flux

Table 1 Heat resistance of Cu mold

Fig.7 Temperature evolution of selected responding temperatures in Sn-12.5%Pb alloy dip casting without (a) and with (b) TBC mold

Fig.8 Input heat flux curves in Sn-12.5%Pb alloy dip casting without and with TBC

Fig.9 Obtained samples in Sn-12.5%Pb alloy dip casting without (a) and with (b) TBC (d₁ and d₂—spacings between depression marks)

Fig.10 Schematic of effect of TBCMM on the forming mechanism of oscillation mark (NST—negative strip time, v_c—casting speed)

Fig.11 Oscillation marks of steel continuous casting

[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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