Influence of entrance nozzle structure on mould powder entrapment during filling process of large steel ingot mould

被引：0

作者：

Zhang C.-J. ^{[1
]}

Bao Y.-P. ^{[1
]}

Wang M. ^{[1
]}

Zhang L.-C. ^{[1
]}

机构：

[1] State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing

来源：

Gongcheng Kexue Xuebao/Chinese Journal of Engineering | 2016年 / 38卷

关键词：

Mould filling; Mould powder entrapment; Numerical simulation; Steel ingot;

D O I：

10.13374/j.issn2095-9389.2016.s1.022

中图分类号：

学科分类号：

摘要：

A model for fluid and heat transfer of early stage of filling of a 19 ton ingot mould was built, and the flow and temperature distribution characteristics during early stage of filling were investigated. Numerical simulations of mould filling with a series of entrance nozzles with the different top diameters and bottom diameters were carried out, and the effects of entrance nozzle structure on mould powder entrapment during early stage of filling were investigated. The results show that level fluctuation in molten steel is strong and solidified shell grows fast so that mould powder can be entrapped easily. When top-end interior diameter is larger than bottom-end, the velocity of molten steel stream depends on the bottom-end interior diameter, and decreases with the increasing of op-end interior diameter. As for 19 ton steel ingot, the risk of mould powder entrapment can be greatly decreased when the bottom-end interior diameter is larger than 90 mm. © All right reserved.

引用

页码：129 / 133

页数：4

共 10 条

[1]

Eriksson R., Jonsson L., Jonsson P.G., Effect of entrance nozzle design on the fluid flow in an ingot mold during filling, ISIJ Int, 44, 8, (2004)

[2]

Yang J., Hu B., Zhang J.M., Et al., Study on non-metallic inclusions in Q420 steel, Foundry Technology, 32, 1, (2011)

[3]

Liu X.H., Dong L.R., Yang Z.J., Et al., Type and source of large oxide inclusions, Iron Steel Vanadium Titanium, 6, 3, (1985)

[4]

Sun R.X., Yang Z.J., Dong L.R., Et al., Source and removal methods of large inclusions in steel, Steelmaking, 3, 2, (1987)

[5]

Zhang W., Zhong Y.B., Wang Y., Et al., Numerical simulation of influence of entrance nozzle diameters on filling and solidification process of large steel ingot, Special Casting & Nonferrous Alloys, 30, 9, (2010)

[6]

Yu Z.Y., Design and application of dilated entrance nozzle of ingot mould, CISC Technology, 35, 1, (1992)

[7]

Fang D.D., Shi H.Y., Zhu R.T., Et al., Research on the forming mechanism of large inclusions in wheel steel, J of East China University of Metallurgy, 17, 2, (2000)

[8]

Ho K., Pehlke R.D., Metal-mold interfacial heat transfer, Mater Trans B, 16, 3, (1985)

[9]

Xiao Z.Q., Peng Y.C., Mathematical modeling of entrapment phenomena at slag/metal interface in gas-stirred ladle, Iron Steel, 24, 10, (1989)

[10]

Jonsson L., Jonsson P., Modeling of fluid flow conditions around the slag/metal interface in a gas-stirred ladle, ISIJ Int, 36, 9, (1996)

← 1 →