Specific Features of the Stressed State and Estimation of the Lifetime of Stamped-and-Welded Elbows Used in Hot Reheat Steam Lines of 500-MW Power Units

A. B. Popov

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Specific Features of the Stressed State and Estimation of the Lifetime of Stamped-and-Welded Elbows Used in Hot Reheat Steam Lines of 500-MW Power Units

机译：500 MW机组热再热蒸汽管线用压焊弯头的应力状态特征及寿命估算

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Results obtained from calculations of the stressed and strained state of stamped-and-welded elbows having geometrical peculiarities in the zone of weld joints are presented. It is shown that relatively low calculated stresses in weld joints correspond to the actual degree of microdamage in elbows that have been in operation for 164000 h. Recommendations for extending the service life of elbows are given.

机译：给出了通过计算在焊接接头区域具有几何特性的冲压焊接肘部的应力和应变状态获得的结果。结果表明，焊接接头中相对较低的计算应力对应于已运行164000 h的弯头的实际微损伤程度。给出了延长弯头使用寿命的建议。

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《Thermal engineering》 |2010年第11期|p.982-988|共7页
作者
A. B. Popov;
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OAO Enel OGK-5 Wholesale Generating Company, Chetvertyi Setun'skiiproezd 10a, str. 2, Moscow, 119136 Russia;

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Specific Features of the Stressed State and Estimation of the Lifetime of Stamped-and-Welded Elbows Used in Hot Reheat Steam Lines of 500-MW Power Units

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