Effect of Calcium Treatment on the Non-Metallic Inclusions of Pipeline Steel
LUO Lei1，SUN Yan-hui1，CHEN Yong2，WU Guo-rong2
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. Panzihua Iron and Steel Group Co., Panzhihua 617062, Sichuan, China
Abstract：In order to improve the cleanliness of pipeline steel, the behavior of non-metallic inclusions after calcium treatment in pipeline steel produced by the process of BOF-LF-RH-CC in Pangang was quantitative analyzed. The law of types and sources of inclusions in different processes was found. The reasonable amount of calcium for improving the cleanliness of pipeline steel was put forward. The results show that, the calcium silicon line is feed too much, leading to some high melting point inclusions which is not easily removed by floatation in the existing technology condition. At the same time, the redundant of calcium in liquid steel produces the large amount of CaS and CaO inclusions, which causes the pollution of liquid steel. In accordance with Ca/S equal to 2.0, reasonable amount of Si-Ca is 600m.
罗磊 孙彦辉 陈永 吴国荣. 钙处理工艺对管线钢非金属夹杂物的影响[J]. 钢铁, 2013, 48(1): 42-45.
LUO Lei，SUN Yan-hui，CHEN Yong，WU Guo-rong. Effect of Calcium Treatment on the Non-Metallic Inclusions of Pipeline Steel. Iron and Steel, 2013, 48(1): 42-45.
2013, Vol. 48 
