Optimum Composition of CaO-SiO2-Al2O3-MgO Slag for Spring Steel Deoxidized by Si and Mn in Production
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- 作者：Hulin Yang ; Jiansong Ye ; Xiaoliang Wu…
- 刊名：Metallurgical and Materials Transactions B
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：47
- 期：2
- 页码：1435-1444
- 全文大小：2,117 KB
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Jiansong Ye (1)
Xiaoliang Wu (1)
Yongsheng Peng (1)
Yi Fang (3)
Xinbing Zhao (2)
1. Technology Centre of Hangzhou Iron & Steel Group Company, Hangzhou, 310022, Zhejiang, China
2. Department of Materials and Ecological Engineering, Zhejiang University, Hangzhou, 310007, Zhejiang, China
3. Electric Furnace Co., LTD., Hangzhou Iron & Steel Group Company, Hangzhou, 310022, Zhejiang, China - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Materials Science
Manufacturing, Machines and Tools
Metallic Materials
Operating Procedures and Materials Treatment
Characterization and Evaluation Materials
Numerical and Computational Methods in Engineering - 出版者：Springer Boston
- ISSN：1543-1916
文摘
The relations between plasticity of inclusions and contents of oxygen, aluminum, and sulfur in molten steel were overall discussed by thermodynamics and FactSage software. Then, the optimum compositions of slag were obtained and the activities of components of refining slag system were analyzed. Finally, experiments were carried out based on the results of calculation. According to the relations, it could achieve better effect to improve basicity R (R = CaO/SiO2 by mass pct) and C/A (C/A = CaO/Al2O3 by mass pct) in the low melting temperature [≤1673 K (≤1400 °C)] region of refining slag as far as possible. For the CaO-SiO2-Al2O3-MgO slag, the optimum compositions are MgO: 5–9 pct, CaO: 47.4–50.2 pct, SiO2: 41.9–45.6 pct and Al2O3: ≤2.79 pct, respectively, in which the basicity is at the range of 1.0 to 1.19 and C/A is above 9.0. It is proved by experiments that the plasticity of inclusions and the contents of [O], [Al], and [S] can be controlled effectively by the optimum composition of refining slag, and the high cleanness is achieved in spring wire rods.