| 1 000 MW超超临界塔式锅炉T23钢管焊接接头裂纹分析 |
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| 引用本文： | 钟飞,张春雷.1 000 MW超超临界塔式锅炉T23钢管焊接接头裂纹分析[J].电力建设,2012,33(4):90-92. |
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| 作者姓名： | 钟飞 张春雷 |
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| 作者单位： | 广东电网公司电力科学研究院 |
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| 基金项目： | 南方电网重点科技项目(K-GD2011-435) |
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| 摘 要： | 针对某电厂1 000 MW超超临界塔式锅炉T23钢管焊接接头发生泄漏的问题，对接头裂纹进行了宏观检查和微观组织分析。分析表明，水冷壁管焊缝附近裂纹的形成原因主要是由焊接残余应力和焊接结构本身的拘束应力共同作用造成的。
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| 关 键 词： | T23 焊接接头 裂纹分析 塔式锅炉 超超临界 |
| 收稿时间： | 2011-11-07 |
Crack Analysis of T23 Steel Tube Welded Joints for 1 000 MW Ultra Supercritical Tower-type Boiler |
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| ZHONG Fei
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ZHANG Chun-lei.Crack Analysis of T23 Steel Tube Welded Joints for 1 000 MW Ultra Supercritical Tower-type Boiler[J].Electric Power Construction,2012,33(4):90-92. |
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| Authors: | ZHONG Fei ZHANG Chun-lei |
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| Affiliation: | (Electric Power Research Institute of Guangdong Power Grid Corporation,Guangzhou 510080,China) |
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| Abstract: | The macro-inspection and microstructure analysis of cracks for welded joints were investigated,according to the leakage of T23 Steel tube welded joints in a 1 000 MW ultra supercritical tower-type boiler.The result shows that the water-wall tube weld cracks are caused by residual stress and structural binding stress of welded joints. |
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| Keywords: | T23 welded joints crack analysis tower-type boiler ultra supercritical |
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