| U75V钢轨轨腰探伤不合原因的分析 |
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| 引用本文： | 杨玉,陈昕,金纪勇,张序平,常宏伟.U75V钢轨轨腰探伤不合原因的分析[J].钢铁,2011,46(2):91-95. |
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| 作者姓名： | 杨玉 陈昕 金纪勇 张序平 常宏伟 |
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| 作者单位： | 1. 鞍钢股份技术中心,辽宁,鞍山,114009
2. 鞍钢股份产品制造部,辽宁,鞍山,114021 |
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| 摘 要： | 为查明U75V钢轨轨腰探伤不合原因,采用垂直探伤定位法准确定位缺陷后,利用光学显微镜、扫描电镜对定位的缺陷部位进行了非金属夹杂物、金相组织等检验分析.结果表明,在U75V钢轨轨腰探伤不合处存在长度超过2.0mm的异常大硅酸盐类非金属夹杂物和组织偏析,分析认为异常大硅酸盐类非金属夹杂物是导致探伤不合的主要原因.
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| 关 键 词： | 钢轨 探伤 非金属夹杂物 |
Analysis of the Failed Detection on U75V Rail Waists |
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| YANG Yu,CHEN Xin,JIN Ji-yong,ZHANG Xu-ping,CHANG Hong-wei.Analysis of the Failed Detection on U75V Rail Waists[J].Iron & Steel,2011,46(2):91-95. |
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| Authors: | YANG Yu CHEN Xin JIN Ji-yong ZHANG Xu-ping CHANG Hong-wei |
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| Affiliation: | YANG Yu1,CHEN Xin1,JIN Ji-yong1,ZHANG Xu-ping2,CHANG Hong-wei2(1.Technology Center of Angang Steel Co.,Ltd.,Anshan 114009,Liaoning,China,2.Product Manufacture Department of Angang Steel Co.,Anshan 114021,China) |
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| Abstract: | To find out the reason of the failed detection on U75V rail waists,after the defects was located by double vertical detection,non-metallic inclusions and metallurgical structure were investigated with the optical microscope and SEM.The results show that there are silicate inclusions with its size longer than 2 mm and micro segregation in the detect location,and it is believed that the exceptional silicate non-metallic inclusion is the main reason for failed detection. |
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| Keywords: | rail flaw detection non-metallic inclusion |
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