Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2008.11a
- /
- Pages.94-97
- /
- 2008
Effect of preemptive weld overlay on residual stress of repaired weldment in surge nozzle
예방 용접 overlay 가 밀림관 노즐 보수 용접부 잔류응력에 미치는 영향
-
Oh, Chang-Young
;
-
Song, Tae-Kwang
;
- Bae, Hong-Yeol ;
- Chun, Yun-Bae ;
-
Kim, Yun-Jae
;
- Lee, Kyoung-Soo ;
-
Park, Chi-Yong
-
오창영
(고려대학교 기계공학과)
;
-
송태광
(고려대학교 기계공학과)
;
- 배홍열 (고려대학교 기계공학과) ;
- 전윤배 (고려대학교 기계공학과) ;
-
김윤재
(고려대학교 기계공학과)
;
- 이경수 (한전 전력 연구원) ;
-
박치용
(한전 전력 연구원)
- Published : 2008.11.05
Abstract
In the welding process, weldments usually include repair weld during the manufacturing process. Repair welds is supposed to cause strong tensile residual stress. Moreover weldments, usually made by Alloy 82/182, is susceptible to PWSCC. Therefore, mitigation of welding residual stress in weldments is important for reliable operating. PWOL is one of the methods for mitigation and verified for over twenty years. In this paper, residual stress distribution of repaired weldments and the effect of PWOL on mitigation is examined for surge nozzle.
Keywords