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| Process optimization of high carbon tool steel slab continuous casting |
| SU Rui-xian1，SU Zhi-jian2 |
（1. Meishan Steel Company Steelmaking Plant， Nanjing 210039， Jiangsu， China
2. Northeast University， Shenyang 110819， Liaoning， China） |
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Abstract Combined with the high temperature mechanical experiments of steel grades， the production process of high carbon steel BJS55C was optimized in a steel plant. The secondary cooling intensity of bending section was weakened， and the distribution of cooling water in each zone was adjusted to avoided the brittle temperature range. As a result， the incidence of corner cracks of slab was reduced by 41%. The dynamic soft reduction zone was optimized. Meanwhile， the reduction increased by 15%. As a result， the macrostructure index of slab improved from 2.6 to 2.0. The melting point of high carbon steel mold flux was decreased from 1 100 ℃ to 980 ℃， and the viscosity of mold flux at 1 300 ℃ decreased from 0.14 Pa·s to 0.08 Pa·s. The melting effect and permeability of mold flux were obviously improved. Some key problems in the production of high carbon steel slab were solved， and the batch stable production of high carbon steel by continuous casting was realized.
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Received: 07 December 2018
Published: 28 February 2019
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| [1] |
任迅．减少高碳钢质量异议的攻关实践[J]．连铸, 2003,(5): 37
|
| [2] |
刘国梁等．高碳钢板坯表面缺陷控制技术研究[J]．2016年（第十九届）全国炼钢学术会议论文集, 286-292
|
| [3] |
朱苗勇, 祭程, 罗森．连铸坯的偏析机器控制[M]．北京：冶金工业出版社,2015
|
| [4] |
杨学富．宝钢1930mm连铸生产高碳钢技术探讨[J]．2005年中国钢铁年会论文集, 398-400
|
| [1] |
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| [2] |
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| [3] |
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| [4] |
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| [5] |
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| [6] |
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2019, Vol. 38 
