| 高强度容器板探伤不合原因分析 |
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| 引用本文： | 李连任,高伟,杜海涛,孙成龙.高强度容器板探伤不合原因分析[J].山东冶金,2011(5):104-106. |
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| 作者姓名： | 李连任 高伟 杜海涛 孙成龙 |
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| 作者单位： | 济南钢铁股份有限公司中厚板厂; |
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| 摘 要： | 针对某高强度容器板探伤不合的情况,运用金相检验、扫描电镜等分析手段,对钢板探伤不合部位取样进行观察和分析,发现组织中有中心裂纹、夹杂物等缺陷,分析认为,钢坯原始裂纹、锰偏析造成的钢板轧后裂纹及钙铝酸盐夹杂物是造成容器板探伤不合格的主要原因。通过提高钢水洁净度、减少钢坯内部原始裂纹、降低夹杂物数量及夹杂物的聚集等,可改善高强度容器板探伤合格率。
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| 关 键 词： | 高强度容器板 探伤不合 中心裂纹 夹杂物 |
Cause Analysis of Ultrasonic Flaw Detection Disqualification of High Strength Vessel Plates |
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| LI Lian-ren,GAO Wei,DU Hai-tao,SUN Cheng-long.Cause Analysis of Ultrasonic Flaw Detection Disqualification of High Strength Vessel Plates[J].Shandong Metallurgy,2011(5):104-106. |
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| Authors: | LI Lian-ren GAO Wei DU Hai-tao SUN Cheng-long |
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| Affiliation: | LI Lian-ren,GAO Wei,DU Hai-tao,SUN Cheng-long(The Medium and Heavy Plate Plant of Jinan Iron and Steel Co.,Ltd.,Jinan 250101,China) |
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| Abstract: | Aiming at ultrasonic flaw detection disqualification phenomena of high strength vessel plates,sampling in the ultrasonic flaw detection disqualification site carried out metallographic examination and SEM analysis. The results showed that center cracks and inclusions etc exist in the microstructure. Analysis consider that the main reasons of ultrasonic flaw detection disqualification are the original cracks in the slab,the cracks after rolling caused by the manganese segregation and the calcium-aluminates i... |
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| Keywords: | high strength vessel plate ultrasonic flaw detection disqualification center crack inclusion |
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