| 宽厚板中碳合金钢铸坯中间裂纹的控制策略研究 |
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| 引用本文： | 蔡可森,缪春锋,耿建林,李海军,张炯明.宽厚板中碳合金钢铸坯中间裂纹的控制策略研究[J].中国冶金,2011,21(5):36-39. |
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| 作者姓名： | 蔡可森 缪春锋 耿建林 李海军 张炯明 |
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| 作者单位： | 1.南京钢铁股份有限公司中厚板卷厂，江苏南京 210035; 2.北京科技大学冶金与生态工程学院，北京 100083 |
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| 摘 要： | 通过酸浸低倍等手段，获取中间裂纹产生的位置和规律。采取提高铸机辊缝精度、优化二冷水强度、调整动态轻压下区间等手段，降低了中间裂纹的发生率，改善了中心偏析和中心疏松，提高了铸坯的质量。
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| 关 键 词： | 中间裂纹 中碳低合金钢 动态轻压下 内部质量 |
Study on the Control Tactics of Halfway Cracks in Slab for Wide Thick Plate |
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| CAI Ke-sen,MIAO Chun-feng,GENG Jian-lin,LI Hai-jun,ZHANG Jiong-ming.Study on the Control Tactics of Halfway Cracks in Slab for Wide Thick Plate[J].China Metallurgy,2011,21(5):36-39. |
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| Authors: | CAI Ke-sen MIAO Chun-feng GENG Jian-lin LI Hai-jun ZHANG Jiong-ming |
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| Affiliation: | 1. Wide Plate and Coil Plant， Nanjing Iron and Steel Co.， Ltd.， Nanjing 210035， Jiangsu， China; 2. School of Metallurgy and Ecology， University of Science and Technology Beijing， Beijing 100083， China |
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| Abstract: | Methods of acid etch test for macro-structures was adopted to get the halfway cracks location and regularity.By improving precision of conticaster roll gap,optimizing the intensity of second cooling water,adjusting the zone of dynamic soft reduction and so on,the incidence rate of halfway cracks was reduced from 66.7% to 11.7%,center segregation and center porosity were improved,the quality of the slab was raised to a much higher level. |
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| Keywords: | halfway cracks alloy medium carbon steel dynamic soft reduction internal qualities |
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