Effect of bottom blowing argon flow on temperature and solidification of molten metal during casting

Gen Yunfei; Zhong Liangcai; Yang Xiaomeng; Yang Shicun; Zhang Ling; He Longlong

doi:10.7513/j.issn.1004-7638.2022.02.020

Volume 43 Issue 2

May 2022

Turn off MathJax

Article Contents

Article Navigation > IRON STEEL VANADIUM TITANIUM > 2022 > 43(2): 133-139

Gen Yunfei, Zhong Liangcai, Yang Xiaomeng, Yang Shicun, Zhang Ling, He Longlong. Effect of bottom blowing argon flow on temperature and solidification of molten metal during casting[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(2): 133-139. doi: 10.7513/j.issn.1004-7638.2022.02.020

Citation:

Gen Yunfei, Zhong Liangcai, Yang Xiaomeng, Yang Shicun, Zhang Ling, He Longlong. Effect of bottom blowing argon flow on temperature and solidification of molten metal during casting[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(2): 133-139. doi: 10.7513/j.issn.1004-7638.2022.02.020

Citation:

Gen Yunfei, Zhong Liangcai, Yang Xiaomeng, Yang Shicun, Zhang Ling, He Longlong. Effect of bottom blowing argon flow on temperature and solidification of molten metal during casting[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(2): 133-139. doi: 10.7513/j.issn.1004-7638.2022.02.020

PDF( 1482 KB)

Effect of bottom blowing argon flow on temperature and solidification of molten metal during casting

doi: 10.7513/j.issn.1004-7638.2022.02.020

Key Laboratory of Ecological Metallurgy of Polymetallic Ore of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China

Received Date: 2021-04-07
Available Online: 2022-05-11
Publish Date: 2022-04-28

Abstract

Abstract

The low melting point Pb₁₈Sn₁₂In₂₁Bi₄₉ alloy (mass fraction) in a stainless steel ingot mold during casting with bottom argon blowing was used to investigate the effects of bottom argon blowing on the temperature of the molten alloy and the microstructure of the solidified phase during casting by measuring the temperature at different positions in the mold by thermocouples and observing the microstructure of the solidified phase by scanning electron microscope (SEM). The experimental results showed that the temperature of the central temperature measurement point in the horizontal direction decreased slowly in the casting process without bottom blowing, and the temperature dropped sharply to the isothermal platform temperature after casting. The central point temperature decreased to solidification at a faster drop rate in the casting process with bottom argon blowing. When there was no bottom blowing argon during casting, the liquid alloy was solidified from bottom to top in the vertical direction, while with the bottom argon blowing, the solidification began at all monitoring points almost simultaneously. Under the same cooling conditions, bottom argon blowing noteworthy delayed the solidification start time at the lower part of the model during the casting process. The average diameter of the Sn-rich phase on the detection cross-section was 2.58 μm without bottom argon blowing. In contrast, with bottom argon blowing, the particle size distribution of solidified phase can be effectively improved, the microstructure of as-cast alloy can be refined, and the average diameter of the Sn-rich phase on the cross-section was about 1.89～2.20 μm, which was reduced by 26.7%～14.7% compared with that without bottom blowing.
- mold casting,
- bottom argon bubbling,
- low melting point alloys,
- temperature,
- solidification phase microstructure

FullText(HTML)

References(12)

References

[1]	Du Yawei, Wen Guanghua, Tang Ping. Molded in large steel and special steel production in terms of comparative advantage[J]. Metal World, 2009,(5):48−52. (杜亚伟, 文光华, 唐萍. 模铸在大钢锭及特殊钢生产方面的比较优势[J]. 金属世界, 2009,(5):48−52. doi: 10.3969/j.issn.1000-6826.2009.05.017
[2]	马幼平, 许云华. 金属凝固原理与技术[M]. 北京: 冶金工业出版社, 2008. Ma Youping, Xu Yunhua. Metal solidification principle and technology[M]. Beijing: Metallurgical Industry Press, 2008.
[3]	Zhang Guozhi, Feng Yanhui, Zhang Xinxin, et al. Ammonium chloride aqueous solution of heat transfer in the directional solidification experiment analysis[J]. Journal of Thermal Science and Technology, 2007,6(2):113−118. (张国志, 冯妍卉, 张欣欣, 等. 氯化铵水溶液定向凝固实验的传热分析[J]. 热科学与技术, 2007,6(2):113−118. doi: 10.3969/j.issn.1671-8097.2007.02.004
[4]	Tan F L. An experimental study on channels formation during solidification of aqueous ammonium chloride[J]. Applied Thermal Engineering, 2005,25:2169−2192. doi: 10.1016/j.applthermaleng.2005.01.012
[5]	Bianchi M V A, Viskanta R. The effect of air bubbles on the diffusion-controlled solidification of water and aqueous solutions of ammonium chloride[J]. International Journal of Heat and Mass Transfer, 1999,42(6):1097−1110. doi: 10.1016/S0017-9310(98)00133-1
[6]	Shi Yufeng, Xu Qingyan, Gong Ming, et al. NH₄Cl - H₂O in the process of directional solidification dendrite growth numerical simulation[J]. Acta Metallurgica Sinica, 2011,(5):620−627. (石玉峰, 许庆彦, 龚铭, 等. 定向凝固过程中NH₄Cl-H₂O枝晶生长的数值模拟[J]. 金属学报, 2011,(5):620−627.
[7]	Zhang Xidong, Fan Yangyi. Wood's metal simulation of liquid steel bottom blowing research[J]. Journal of Shanghai Metal, 1994,(2):20−24. (张奚东, 樊养颐. 伍德合金模拟钢液的底吹研究[J]. 上海金属, 1994,(2):20−24.
[8]	张静. 连铸电磁搅拌结晶器内钢液流动的数值模拟与实验研究[D]. 沈阳: 东北大学, 2011. Zhang Jing. Electromagnetic stirring continuous casting crystallizer flow of molten steel in the numerical simulation and experimental research[D]. Shenyang: Northeastern University, 2011.
[9]	Chen Lin, Zong Yanbing, Cang Daqiang, et al. Ultrasonic treatment on wood's metal refining and the effect of porosity generated[J]. Journal of Materials Science and Engineering, 2008,26(3):339−341. (陈琳, 宗燕兵, 苍大强, 等. 超声处理对伍德合金细化及气孔生成的影响[J]. 材料科学与工程学报, 2008,26(3):339−341.
[10]	Hua Junshan, Zhang Yongjie, Wang Engang, et al. The electromagnetic properties under the pulse magnetic field research: solidification experiment[J]. Journal of Northeastern University (Natural Science), 2011,32(2):258−261. (华骏山, 张永杰, 王恩刚, 等. 脉冲磁场下电磁力特性研究: 凝固实验[J]. 东北大学学报(自然科学版), 2011,32(2):258−261. doi: 10.3969/j.issn.1005-3026.2011.02.026
[11]	Li Hang, Li Jie, Xia Yunjin, et al. Pulse electric field inoculation effect on wood's metal solidification organization[J]. Journal of Anhui University of Technology (Natural Science), 2016,33(1):10−13. (李航, 李杰, 夏云进, 等. 脉冲电场孕育处理对伍德合金凝固组织的影响[J]. 安徽工业大学学报(自然科学版), 2016,33(1):10−13.
[12]	王利君. 水冷模铸扁锭凝固过程及工艺参数探究的数值模拟[D]. 沈阳: 东北大学, 2013. Wang Lijun. Water-cooled mould casting slab ingot solidification process and the numerical simulation of the process parameters to explore[D]. Shenyang: Northeastern University, 2013.