Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2008.11a
- /
- Pages.88-93
- /
- 2008
Effect of preemptive weld overlay sequence on residual stress distribution for dissimilar metal weld of Kori nuclear power plant pressurizer
고리 원전 가압기 PWOL의 용접 방향이 이종금속용접부 잔류응력 분포에 미치는 영향
- Bae, H.Y. ;
-
Song, T.K.
;
- Chun, Y.B. ;
-
Oh, C.Y.
;
-
Kim, Y.J.
;
- Lee, K.S. ;
-
Park, C.Y.
- 배홍열 (고려대학교 기계공학과) ;
-
송태광
(고려대학교 기계공학과)
;
- 전윤배 (고려대학교 기계공학과) ;
-
오창영
(고려대학교 기계공학과)
;
-
김윤재
(고려대학교 기계공학과)
;
- 이경수 (고려대학교 기계공학과) ;
-
박치용
(한전 전력연구원)
- Published : 2008.11.05
Abstract
Weld overlay is one of the residual stress mitigation method which arrest crack. An overlay weld sued in this manner is termed a preemptive weld overlay(PWOL). PWOL was good for distribution of residual stress of dissimilar metal weld(DMW) by previous research. Because range of overlay welding is wide relatively, residual stress distribution on PWR is affected by welding sequence. In order to examine the effect of welding sequence, PWOL was applied to a specific DMW of KORI nuclear power plant by finite element analysis method. As a result, the welding direction that from nozzle to pipe is better good for residual stress distribution on PWR.
Keywords