| 冷镦钢冷顶锻裂纹研究 |
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| 引用本文： | 黄晖, 黄乐枧, 殷兵, 易赟. 冷镦钢冷顶锻裂纹研究[J]. 失效分析与预防, 2014, 9(3): 167-171. DOI: 10.3969/j.issn.1673-6214.2014.03.009 |
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| 作者姓名： | 黄晖 黄乐枧 殷兵 易赟 |
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| 作者单位： | 1.方大特钢科技股份有限公司, 南昌 330012 |
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| 摘 要： | 生产的冷镦钢盘条出现冷顶锻开裂的质量问题，通过金相高倍观察、扫描电镜以及能谱等检测方法，对典型缺陷样品及其裂纹进行检测分析，确定了开裂的原因。结果表明：冷镦钢冷顶锻开裂原因是材料表层及次表层存在较大的夹杂物，以及轧制过程中造成了表面划伤。根据分析结果提出控制炼钢夹杂物和加强轧钢导卫调整等改进措施，改善了冷镦钢产品质量，提高其冷顶锻合格率。
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| 关 键 词： | 冷顶锻 裂纹 夹杂 表面质量 |
| 收稿时间： | 2014-03-03 |
| 修稿时间： | 2014-05-25 |
Research on Crack of Cold Heading Steels during Cold Upsetting |
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| HUANG Hui, HUANG Le-jian, YIN Bing, YI Yun. Research on Crack of Cold Heading Steels during Cold Upsetting[J]. Failure Analysis and Prevention, 2014, 9(3): 167-171. DOI: 10.3969/j.issn.1673-6214.2014.03.009 |
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| Authors: | HUANG Hui HUANG Le-jian YIN Bing YI Yun |
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| Affiliation: | 1.Fangda Special Steel Technology Co., Ltd., Nanchang 330012, China |
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| Abstract: | Cold upsetting cracking occurred to cold heading steel. Typical defect samples and their cracks were analyzed by metallographic examination, scanning electron microscopy and energy spectrum analysis. The results show that cold upsetting cracking of cold heading steel was mainly because there existed bigger inclusions at surface and subsurface, and surface scratches formed during rolling. According to the analysis results, some improvement measures were put forward to control inclusions during steelmaking and strengthen the guide adjustment during steel rolling. As a result, the quality of cold heading steel was improved, and the qualification rate of cold upsetting increased. |
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| Keywords: | cold upsetting cracks inclusions surface quality |
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