Abstract：The segregation phenomena of elements would be observed in production of continuous casting billet due to the unreasonable setting of technological parameters. The defects such as crack and shrinkage cavity would be caused in severe cases. The continuous casting billet samples of 20MnSi steel with obvious longitudinal cracks were selected for original position statistic distribution analysis. The experimental results showed that the presence of cracks would cause the abnormal original position statistic results, thus influencing the statistic distribution analysis of elemental contents. The treatment of abnormal data by clipping function of OPA-200 software was a feasible processing method. The original position statistic distribution analysis of whole cross section of continuous casting billet of 20MnSi steel was conducted. The two-dimensional contour maps of contents of C, Si, Mn, P and S were displayed in central region. The elemental enrichment was observed in 1/4 position from edge of cross section. The quantitative analysis of statistic segregation indicated that the segregation of C, P and S was relatively serious, while the segregation of Si and Mn was not too serious. In addition, the sample was also drilled along the horizontal central line of cross section, and the content of C, P and S was analyzed. The results proved that the original position statistic distribution analysis was consistent with the traditional segregation analysis method.
左晓剑, 成国光, 李晶. 20MnSi钢连铸方坯的原位统计分布分析[J]. 冶金分析, 2018, 38(1): 9-15.
ZUO Xiao-jian, CHENG Guo-guang, LI Jing. Original position statistic distribution analysis of the continuous casting billet of 20MnSi steel. , 2018, 38(1): 9-15.
胡文豪,朱施利.连铸工艺参数对GCr15钢碳偏析的影响[J].钢铁,2010,45(11):48-52.HU Wen-hao,ZHU Shi-li.Effect of process parameters in continuous casting on carbon segregation in steel GCr15[J].Iron and Steel,2010,45(11):48-52.
[2]
周德光,傅杰,王平,等.工艺参数对连铸轴承钢坯碳偏析的影响[J].钢铁,1999,34(6):22-26.ZHOU De-guang,FU Jie,WANG Ping,et al.Effect of CC process parameters on carbon segregation of bearing steel[J].Iron and Steel,1999,34(6):22-26.
[3]
王海舟.材料组成特性的统计表征-原位统计分布分析[J].理化检验:化学分册,2006,42(1):1-5.WANG Hai-zhou.A new method of statistic characterization of specific properties of materials-original position statistic distribution analysis[J].Physical Testing and Chemical Analysis Part B: Chemical Analysis,2006,42(1):1-5.
[4]
王海舟.原位统计分布分析-材料研究及质量判据的新技术[J].中国科学:B辑,2002,32(6):481-485.WANG Hai-zhou.Original position statistic distribution analysis-new analytical method in quality evaluation and research of material[J].Science China:Series B,2002,32(6):481-485.
[5]
王海舟.原位统计分布分析—冶金工艺及材料性能的判据新技术[J].中国有色金属学报,2004,14(1):98-105.WANG Hai-zhou.Original position statistic distribution analysis-new analytical method in quality evaluation of process metallurgy and metal materials[J].The Chinese Journal of Nonferrous Metals,2004,14(1):98-105.
[6]
袁良经,胡畔,石小溪,等.火花源原位统计分布分析技术研究船板钢坯断口样品中碳元素的偏析[J].冶金分析,2010,30(7):1-5.YUAN Liang-jing,HU Pan,SHI Xiao-xi,et al.Segregation study of carbon in the fracture samples of shipbuilding steel plate by spark source original position statistic distribution analysis technique[J].Metallurgical Analysis,2010,30(7):1-5.
薛正良,左都伟,齐江华,等.连铸坯凝固偏析的原位统计分布分析[J].特殊钢,2007,28(1):13-15.XUE Zheng-liang,ZUO Du-wei,QI Jiang-hua,et al.Analysis of original position statistic distribution on solidification segregation of cast billet[J].Special Steel,2007,28(1):13-15.
[9]
王英.连铸方坯低倍组织及缺陷特性分析[J].江苏冶金,2003,31(6):35-37.WANG Ying.Macrostructure and defects analysis of continuous casting billet[J].Jiangsu Metallurgy, 2003,31(6):35-37.
