| X70管线钢热轧卷唇状疤块缺陷分析 |
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| 引用本文： | 龚桂仙,吴立新.X70管线钢热轧卷唇状疤块缺陷分析[J].武汉工程职业技术学院学报,2009,21(3):22-23,39. |
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| 作者姓名： | 龚桂仙 吴立新 |
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| 作者单位： | 武汉钢铁(集团)公司研究院,湖北,武汉:430080 |
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| 摘 要： | 用金相显微镜等手段对X70管线钢热轧卷表面唇状疤块缺陷进行分析。结果表明：唇状疤块缺陷是在热轧过程中产生的，主要与部分喷头喷水量过大造成板面局部过冷有关。喷头冲蚀严重是引起喷水量过大的主要因素。通过更换冲蚀严重的喷头，控制好冷却速度，消除了板面唇状疤块缺陷。
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| 关 键 词： | 热轧卷 唇状疤块 板面过冷 |
Analysis of Lip-shaped Defects on the Hot Rolled Coil of X70 Pipeline Steel |
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| GONG Guixian,WU Lixin.Analysis of Lip-shaped Defects on the Hot Rolled Coil of X70 Pipeline Steel[J].Journal of University for Staff and Workers of Wuhan Iron and Steel(Group)Corporation,2009,21(3):22-23,39. |
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| Authors: | GONG Guixian WU Lixin |
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| Institution: | GONG Guixian WU Lixin |
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| Abstract: | The lip-shaped defects on the surface of the hot rolled coil of X70 pipeline steel were analyzed by using metallographic microscope, and the results indicated that such defects were formed in the process of hot rolling, mainly caused by partial overcooling due to excessive water spray. The lip-shaped defects were eliminated by replacing severely erodent nozzles to control the cooling speed. |
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| Keywords: | hot rolled coil lip-shaped defects overcool |
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