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试验ML20Cr钢280 mm×325 mn连铸坯的生产流程为80 t顶底复哄转炉-LF-CC工艺。借助Gleeble1500热模拟试验机测试了试验钢连铸坯的650~1 200℃热塑性曲线.许分析了添加0.029Ti-0.002 3B对ML20Cr钢(/%:0.21~0.22C.0.22~0.235i,0.74~0.76Mn,0.015~0.017P,0.002~0.003S,0.95~0.96Cr.0.034~0.036A1,0.005 0~0.005 1N)热塑性的影响。结果表明,在650~