| 65钢拉簧断裂原因分析及改进措施 |
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| 引用本文： | 罗新中,林晏民,曾虎.65钢拉簧断裂原因分析及改进措施[J].河南冶金,2014(6):20-21. |
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| 作者姓名： | 罗新中 林晏民 曾虎 |
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| 作者单位： | 宝钢集团韶关钢铁有限公司质量检测中心; |
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| 摘 要： | 65钢硬线盘条在拉拔后弯曲成弹簧的过程中出现断裂。针对这个问题,对断裂试样的化学成分、力学性能、金相组织、夹杂物进行分析,对断口进行扫描电镜及能谱分析。结果表明：断裂试样的化学成分、力学性能、非金属夹杂物均达到国标要求。拉簧断裂的主要原因是盘条存在表面缺陷,次要原因是控轧控冷过程中造成的索氏体含量偏低,并针对以上原因提出了相应的改进措施。
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| 关 键 词： | 盘条 拉簧 断裂 表面缺陷 索氏体 |
ANALYSIS OF BREAK CAUSE OF 65 STEEL DURING DRAWING |
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| Lno Xinzhong,Lin Yanmin,Zeng Hu.ANALYSIS OF BREAK CAUSE OF 65 STEEL DURING DRAWING[J].Henan Metallurgy,2014(6):20-21. |
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| Authors: | Lno Xinzhong Lin Yanmin Zeng Hu |
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| Affiliation: | (Testing and Analysis Center of Shaoguan Iron and Steel Co. , Ltd ) |
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| Abstract: | The fracture of high carbon 65# wires occurred during drawing. In view of this problem,the break wires were analyzed by means of chemical composition,mechanical properties,microstructure and inclusion while the fracture surface is scanned by SEM and EDS. The results show that the chemical composition,mechanical properties,inclusion of the sample is qualified. The main reason of breaking is bulk defects. The secondary cause of the bending fracture is that sorbite is lower during rolling. Improvements are proposed aiming at the corresponding reasons. |
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| Keywords: | wire rod drawing fracture surface defect sorbite |
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