摘要
包钢在5^#280mm×380mm方坯连铸机上安装了一套国产动态轻压下设备。对重轨钢U71Mn和U75V进行了一年多的生产试验。结果表明，在合理工艺条件下，采用轻压下可显著改善重轨钢的中心碳偏析，横断面中心碳偏析指数≤1．08，铸坯纵向中心线碳偏析指数波动明显减小，钢轨成分偏差也随之减小。
A set of domestic dynamic soft reduction equipment was installed at No5 280 mm × 380 mm bloom concasting line at Baotou Steel, by which the pilot production for heavy steels U71Mn and U75V has been carried out for more than one year. Results showed that with suitable process conditions, the central carbon segregation in heavy rail steels improved obviously by using soft reduction technology ： the index of central carbon segregation in cross section of bloom was ≤ 1.08, the fluctuation of index of carbon segregation along longitudinal central line of bloom appreciably decreased and the chemical composition deviation of steel rail also decreased.
出处
《特殊钢》
北大核心
2009年第3期28-30,共3页
Special Steel
关键词
大方坯连铸
动态轻压下
碳偏折指数
碳元素偏差指数
Bloom Concasting, Dynamic Soft Reduction, Carbon Segregation Index, Carbon Element Deviation Index
