轻压下改善重轨钢铸坯成分均匀性的生产试验

特殊钢 ›› 2009, Vol. 30 ›› Issue (3): 28-30.

轻压下改善重轨钢铸坯成分均匀性的生产试验

李峰¹，刘平¹，白月琴¹，史凤武¹，董珍¹，张家泉²

1包头钢铁集团公司技术中心，包头014010；
2北京科技大学.北京100083

收稿日期:2008-11-27 出版日期:2009-06-01 发布日期:2022-11-24
作者简介:李峰<(1971-),男，博士，高级工程师，炼钢工艺研究

Pilot Production with Dynamic Soft Reduction to Improve Composition Uniformity in Cast Bloom of Heavy Rail Steels

Li Feng¹, Liu Ping¹ , Bai Yueqin¹ , Shi Fengwu¹, Dong Zhen¹ ，Zhang Jiaquan²

1 Technology Center, Baotou Iron and Steel Group Corp, Baotou 014010；
2 University of Science and Technology, Beijing 100083

Received:2008-11-27 Published:2009-06-01 Online:2022-11-24

摘要/Abstract

摘要： 包钢在5~#280 mm×380 mm方坯连铸机上安装了一套国产动态轻压下设备、对重轨钢U71 Mn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。

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

Abstract: A set of domestic dynamic soft reduction equipment was installed at No5 280 mm x 380 mm bloom concast- ing line at Baotou Steel, bv which the pilot production for heavy steels U71 Mn and U75 V has been carried out for more than one vear. 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 chenii- cal composition deviation of steel rail also decreased.

Key words: Bloom Concasting, Dynamic Soft Reduction, Carbon Segregation Index, Carbon Element Deviation Index

李峰, 刘平, 白月琴, 史凤武, 董珍, 张家泉. 轻压下改善重轨钢铸坯成分均匀性的生产试验[J]. 特殊钢, 2009, 30(3): 28-30.

Li Feng, Liu Ping, Bai Yueqin, Shi Fengwu, Dong Zhen, Zhang Jiaquan. Pilot Production with Dynamic Soft Reduction to Improve Composition Uniformity in Cast Bloom of Heavy Rail Steels[J]. Special Steel, 2009, 30(3): 28-30.

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