| 焊后热处理消除P91钢管焊接残余应力的数值分析 |
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| 引用本文： | 曹德辉,戴晟. 焊后热处理消除P91钢管焊接残余应力的数值分析[J]. 电焊机, 2006, 36(12): 7-9 |
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| 作者姓名： | 曹德辉 戴晟 |
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| 作者单位： | 广东火电工程总公司,广东,广州,510730;三峡大学,机械与材料学院,湖北,宜昌,443002 |
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| 摘 要： | 根据2002／2004电力规程和P91钢工艺导论确定焊接工艺和焊后热处理工艺，建立P91钢管焊后热处理分析的有限元模型。研究热处理前后周向残余应力的分布。有限元结果表明焊后热处理能有效地改善P91钢管的焊接残余应力分布，降低应力峰值，消除残余应力效果较为明显，可提高接头的综合力学性能。
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| 关 键 词： | P91钢管 焊后热处理 焊接残余应力 消除 数值分析 |
| 文章编号： | 1001-2303(2006)12-0007-03 |
| 收稿时间： | 2006-11-09 |
| 修稿时间： | 2006-11-09 |
Numerical value analysis on reduction of welding residual stresses with postweld heat treatment on P91 pipes |
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| CAO De-hui,DAI Sheng. Numerical value analysis on reduction of welding residual stresses with postweld heat treatment on P91 pipes[J]. Electric Welding Machine, 2006, 36(12): 7-9 |
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| Authors: | CAO De-hui DAI Sheng |
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| Affiliation: | 1.Guangdong Power Engineering Corporation, Guangzhou 510730,China;2.College of Mechanical and Material Engineering,Three Gorges University,Yichang 443002,China |
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| Abstract: | According to 2002/2004 Power Rulers and P91 Steel's Processes Index,the welding processes and the postweld heat treatment processes of P91 steel are described and postweld heat treatment modeling of P91 pipe using the finite element method is presented.The distribution of circumferential residual stress of welding statuses and postweld heat treatment statuses are analyzed used by finite element method.The results of finite element analysis show that the postweld heat treatment process improves the distribution of welding residual stress of P91 pipes effectively and reduces stress peaks.It also could remove residual stress obviously and enhance joint's mechanics performance. |
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| Keywords: | P91 pipes postweld heat treatment residual stress reduction numerical value analysis |
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