|
|
|
| Influence of Spraying Intensity on Solidification Structure of Continuous Casting Billet During Secondary Cooling |
| ZHU Shi-li1,2, ZHENG Guo-qu1, YE Jian-song2, HU Wen-hao2, CAO Hua-zhen1 |
1. College of Chemical Engineering and Materials Science， Zhejiang University of Technology， Hangzhou 310032，Zhejiang， China
2. Technology Center， Hangzhou Iron and Steel Group Co.， Hangzhou 310022， Zhejiang， China |
|
|
|
|
Abstract The relationship between spraying intensity and casting parameters was derived during secondary cooling of continuous casting, and the solidification structures of billets with two different sections were compared under different spraying intensities. The results showed that it was more accurate to express the relationship between solidification structures of billet and cooling parameters by using spraying intensity. Dendrite arm spacing was about 20 μm in the surface of billets and about 200-350 μm in the centre. The dendrites in diagonal area were tinier than those in lateral area at the same distance from surface of billet. Under the similar spraying intensity, the rules of solidification for billets showed that the structures in centre area were tiny for billets with cross-section of 200 mm×200 mm, but tiny structures existed in areas close to centre for billets with cross-section of 150 mm×150 mm. During solidification of billets, the left curve of solidification laws was obeyed basically from surface to center, but it was the right curve for centre area and areas close to centre when the cross-sections of billets were larger than 200 mm×200 mm.
|
|
Received: 08 October 2013
Published: 05 August 2014
|
|
|
|
| [1] |
ZHU Li-guang, ZHENG Shi-wei, ZHANG Qing-jun, CAO Sheng-li. Influence of oxide metallurgy and pulsed magnetic field parameters on steel microstructure[J]. Iron and Steel, 2020, 55(3): 74-79. |
| [2] |
LI Bo, YANG Fei-fei, LIU Hua-song, LUO Ming, ZHANG Zhong-hua, ZHANG Jia-quan. Effect of solidification structure on banded defects of high strength corrosion resistant tubes[J]. Iron and Steel, 2020, 55(3): 87-95. |
| [3] |
LAN Peng, TIE Zhan-peng, ZHANG Wei, MIAO Hong-sheng, YAN Qing-zhong, ZHANG Jia-quan. Research progress on spot segregation defects in continuously cast semi-products[J]. Iron and Steel, 2020, 55(2): 11-22. |
| [4] |
. Analysis and control of slag inclusion defect of low carbon steel slab[J]. , 2020, 45(2): 0-0. |
| [5] |
XIE shizheng. Effect of roller EMS on macrostructure and properties of high strength steel[J]. , 2020, 45(1): 0-0. |
| [6] |
ZHU Miaoyong. Some considerations for new generation of highefficiency #br# continuous casting technology development[J]. Iron and Steel, 2019, 54(8): 21-36. |
|
|
|
|
2014, Vol. 49 
