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Application of high efficiency SAW process in erection joint of ship

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2010년도 춘계 학술발표대회 발표초록, 2010년 5월, 서울 KWJS 2010-Spring

선체 탑재 이음부의 고능률 SAW 적용

윤 광희, 김 진용, 허 만주

대우조선해양 산업기술연구소

Application of high efficiency SAW process in erection joint of ship

Kwanghee Yun, Jinyong Kim, Manjoo Huh

Industrial Application R&D Institute, Daewoo Shipbuilding & Marine Engineering

Abstracts 선박건조에 있어서 대형 블록의 조립이 이루어지는 선행 탑재 및 탑재 단계에서 Tank Top과 Upper Deck의 V 개선 용접은 FCAW+SAW의 복합용접이 실시되고 있다.  그러나가장 범용적 모재 두께인 18~20t의 경우 SAW 시공에만 약 5~6Pass가 소요됨으 로써 다급한 진수 일정에 많은 지장을 초래하고 있다. 또한 능률 향상을 목적으로 용착 량 증가효과를 얻기 위해 철분말이나 절선와이어를 개선면내에 충진하고 용접을 수행하 나 획기적인 용접능률을 기대하기 어렵고 용접사 기량에 따라 용접 결함이 발생될 수  있다.   이에 따라 용접패스 수를 줄이고 결함 발생이 없는 용접기법 개발이 절실히 필요하 였다. 이를 위해 매우 간단하고 효율적인 위빙장치를 제작하여 선탑/탑재 아래보기 용 접이음에 1~2패스의 SAW 용접법을 개발하여 용접생산성은 물론 용접품질까지 획기적 으로 향상시키는 기술 개발을 완료하였다. 52

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