Effect of adjacent safe end to piping weld and preemptive weld overlay repair on residual stresses on nozzle to safe end weld

Tae Kwang Song, Yun Jae Kim, Yun Bae Chun, Chang Yong Oh, Hong Yeol Bae, Kyoung Soo Lee, Chi Yong Park

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルProceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication
ページ425-433
ページ数9
PART A
DOI
出版ステータスPublished - 2010 6月 7
外部発表はい
イベント2009 ASME Pressure Vessels and Piping Conference - Prague, Czech Republic
継続期間: 2009 7月 262009 7月 30

出版物シリーズ

名前American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
番号PART A
6
ISSN(印刷版)0277-027X

Conference

Conference2009 ASME Pressure Vessels and Piping Conference
国/地域Czech Republic
CityPrague
Period09/7/2609/7/30

ASJC Scopus subject areas

  • 機械工学

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