| 高强船板中心偏析产生的原因分析及预防措施 |
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| 引用本文： | 刘现玲,朱开军,张植伟.高强船板中心偏析产生的原因分析及预防措施[J].河北冶金,2011(4):24-27. |
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| 作者姓名： | 刘现玲 朱开军 张植伟 |
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| 作者单位： | 1. 河北钢铁集团邯钢公司三炼钢厂,河北邯郸,056015
2. 河北钢铁集团邯钢公司连铸连轧厂,河北邯郸,056015 |
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| 摘 要： | 从工艺及设备两个方面分析中心偏析产生的原因,结合生产现场存在的主要问题,采取控制钢水过热度、恒定拉速、优化二冷配水、加大凝固末端辊缝收缩量等措施,改善铸坯内部质量,取得了良好效果,高强船板断口分层改判率由原来的3.09%下降为1.09%。
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| 关 键 词： | 中心偏析 断口分层 浇注速度 二次冷却 辊缝 |
REASON ANALYSIS AND PRECAUTIONS FOR CENTRAL SEGREGATION OF HIGH-STRENGTH SHIP STEEL |
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| Liu Xianling,Zhu Kaijun,Zhang Zhiwei.REASON ANALYSIS AND PRECAUTIONS FOR CENTRAL SEGREGATION OF HIGH-STRENGTH SHIP STEEL[J].Hebei Metallurgy,2011(4):24-27. |
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| Authors: | Liu Xianling Zhu Kaijun Zhang Zhiwei |
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| Affiliation: | Liu Xianling1,Zhu Kaijun1,Zhang Zhiwei2(1.No.3 Steelworks,Handan Iron and Steel Company,Hebei Iron and Steel Group,Handan,Hebei,056015,2.Continuous Casting and Rolling Mill,056015) |
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| Abstract: | From two fields: technology and equipment,it is analyzed the reason the central segregation takes place on high-strength ship steel board.According the main problems on the production site,measures are adopted: controlling overheat extent of molten steel,keeping drawing speed not change,optimizing second cooling water,increasing shrinking quantity of roll gap at solidification end,and so the inner quality of casting billet improved. |
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| Keywords: | central segregation fracture surface layering casting speed second cooling roll gap |
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