Original position statistic distribution analysis of carbon, silicon, manganese, phosphorus, sulfur, niobium, titanium, vanadium in the cross section of different middle and low alloy steel continuous casting slabs
LI Mei-ling, WANG Hui, YANG Zhi-gang, FENG Xiao-xu, CHEN Ji-wen, JIA Yun-hai, WANG Hai-zhou
Central Iron & Steel Research Institute, Beijing 100081, China
Abstract：The distribution, agglomeration and centerline segregation of C, Si, Mn, P, S, Nb, Ti, and V in the cross section of middle and low alloy steel continuous casting slabs from different production process with different thickness have been analyzed by original position statistic distribution analysis (OPA). Several typical centerline segregation forms were observed and described, such as, intermittent, continuous and positive-negative segregation in interlaced distribution. It was found that the centerline segregation modes of most elements were relative stable, i.e., they had stability along with the drawing direction in a certain thickness range. The characteristic values of OPA for quantitatively characterization of elemental distribution state were presented, such as maximum segregation degree and statistical segregation degree. The difficulty level of elements to form segregation in steel slabs and the common distribution modes were discussed. Sulphur segregation analysis results by OPA were also consistent with those from the traditional method (sulphur print). The results showed that OPA could be effectively applied to the composition distribution analysis and segregation analysis of middle and low steel slabs with wide content range and different thickness sizes. Moreover, the analysis results had good repeatability and reliability.
李美玲，王辉，杨植岗，冯晓旭，陈吉文，贾云海，王海舟. 原位统计分布分析技术分析不同中低合金钢连铸板坯横截面上碳、硅、锰、磷、硫、铌、钛、钒[J]. 冶金分析, 2011, 31(6): 1-8.
LI Mei-ling, WANG Hui, YANG Zhi-gang, FENG Xiao-xu, CHEN Ji-wen, JIA Yun-hai, WANG Hai-zhou. Original position statistic distribution analysis of carbon, silicon, manganese, phosphorus, sulfur, niobium, titanium, vanadium in the cross section of different middle and low alloy steel continuous casting slabs. , 2011, 31(6): 1-8.
