| SS400热轧H型钢翼缘开裂成因及控制措施 |
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| 引用本文： | 王克锋,宋介中,李明贤,何力国,赵锐.SS400热轧H型钢翼缘开裂成因及控制措施[J].钢铁,2011,46(9):96-100. |
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| 作者姓名： | 王克锋 宋介中 李明贤 何力国 赵锐 |
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| 作者单位： | 1. 日照钢铁有限公司质量部， 山东 日照 276806 2. 日照钢铁有限公司技术中心， 山东 日照 276806 |
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| 摘 要： | 以842炉次SS400热轧H型钢为研究对象，借助金相、扫描电镜等对SS400热轧H型钢翼缘开裂缺陷进行了分析。结果表明，连铸坯表层夹杂、皮下气泡及角部裂纹是造成H型钢翼缘开裂的主要原因。通过采取钢水脱氧、提高锰/硫比、保证软搅拌时间和中间包烘烤时间、降低中间包钢水过热度、调整结晶器的工艺参数等措施，有效地解决了SS400热轧H型钢翼缘开裂问题。
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| 关 键 词： | H型钢 翼缘开裂 铸坯钢坯 角部裂纹 皮下气泡 表层夹杂 |
| 收稿时间： | 2010-12-02 |
Analysis of Flange Crack on Hot-Rolled H Section Steel of SS400 |
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| WANG Ke-feng,SONG Jie-zhong,LI Ming-xian,HE Li-guo,ZHAO Rui.Analysis of Flange Crack on Hot-Rolled H Section Steel of SS400[J].Iron & Steel,2011,46(9):96-100. |
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| Authors: | WANG Ke-feng SONG Jie-zhong LI Ming-xian HE Li-guo ZHAO Rui |
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| Affiliation: | 1. Quality Division, Rizhao Steel Co., Ltd.， Rizhao 276806, Shandong, China 2. Technology Center, Rizhao Steel Co., Ltd.， Rizhao 276806, Shandong, China |
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| Abstract: | Based on 842 heats of SS400,the flange crack of hot-rolled H section steel of SS400 was analyzed by using optical microscope,scanning electron microscopy and other methods.The results indicated that the blister,edge crack,surface inclusion and skin blowhole are the main factors causing the flange crack defect.The measures for improving H section steel quality were put forward such as controlling chemical compositions and stirring time,increasing the ratio of manganese and sulphur,decreasing inclusions and e... |
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| Keywords: | H section steel flange crack continuous casting billet surface inclusion skin blowhore edge crack |
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