| Q345D钢板探伤不合的原因分析及改进措施 |
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| 引用本文： | 赵庆宇. Q345D钢板探伤不合的原因分析及改进措施[J]. 宽厚板, 2010, 16(5): 22-24 |
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| 作者姓名： | 赵庆宇 |
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| 作者单位： | 唐山中厚板材有限公司 |
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| 摘 要： | 为了分析Q345D钢板探伤不合的原因,利用数码相机、扫描电镜、能谱仪和金相显微镜对钢板低倍、夹杂物和显微组织进行了观察分析。采用钢板轧制后堆垛缓冷的方法,提高了探伤合格率;通过对比,介绍了探伤合格的机理。
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| 关 键 词： | 超声波探伤 中心偏析 缓冷 |
Causes Analysis and Corrective Measures of Nonconformity in Ultrasonic Flaw Detection of Q345D Steel Plate |
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| Zhao Qingyu. Causes Analysis and Corrective Measures of Nonconformity in Ultrasonic Flaw Detection of Q345D Steel Plate[J]. Wide and Heavy Plate, 2010, 16(5): 22-24 |
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| Authors: | Zhao Qingyu |
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| Affiliation: | Zhao Qingyu (Tangshan Heavy Plate Co |
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| Abstract: | In order to investigate the causes of nonconformity in ultrasonic flaw detection of Q345D steel plate, observation and analysis have been made on the maerostructure, inclusions and microstructure of steel plate by means of digital camera, scanning electron microscope （SEM） , energy disperse spectroscopy （EDS） and metallographic microscope. Conformity ratio of ultrasonic flaw detection is improved by means of plate piling for slow eoohng after rolling. The mechanism of ultrasonic flaw detection is described by comparison. |
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| Keywords: | Ultrasonic flaw detection Center segregation Slow cooling |
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