EFFECT OF ADJACENT SAFE END TO PIPING WELD AND PREEMPTIVE WELD OVERLAY REPAIR ON RESIDUAL STRESSES ON NOZZLE TO SAFE END WELD

被引：0
|
作者：
Song, Tae-Kwang [1 ]
Kim, Yun-Jae [1 ]
Chun, Yun-Bae [1 ]
Oh, Chang-Yong [1 ]
Bae, Hong-Yeol [1 ]
Lee, Kyoung-Soo
Park, Chi-Yong
机构：
[1] Korea Univ, Dept Mech Engn, Seoul 136713, South Korea
来源：
PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, VOL 6, PTS A AND B | 2010年
关键词：
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this study, simplified nozzle geometry was proposed to quantify the effects of adjacent similar metal weld and weld overlay on residual stresses in dissimilar metal weld. Finite element analyses were conducted with various thickness ratios and safe end lengths and corresponding residual stresses were provided. According to the results, residual stresses in dissimilar metal weld were improved after adjacent similar metal welding. The effect of similar metal welding is more evident with shorter length of safe end. Thus, short length of safe end was recommended for new design of nozzle. Appropriate thickness of preemptive weld overlay reduces the conservative thickness recommended by ASME Code.
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页码：425 / 433
页数：9
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