LNG연료추진탱크용 ASTM A553M-17 소재의 파이버 레이저 변수에 따른 Bead on Plate 특성 연구 (PART I : 레이저 출력)
Bead on Plate Characteristics Study According to Fiber Laser Parameters of ASTM A553M-17 Material for LNG Fueled Tank (Part I : Laser power)
Due to stricter environmental regulations of the International Maritime Organization (IMO), the number of ships fueled by Liquefied Natural Gas (LNG) is rapidly increasing. The International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code) limits the material of tanks that can store cryogenic substances such as LNG. Among the materials listed in the IGC Code, ASTM A553M-17 has been recently adopted as a material for LNG fuel tank projects because of its excellent mechanical properties at cryogenic temperatures. In shipyards, this material is being used to build tanks through Flux Cored Arc Welding (FCAW). However, there is a problem that magnetization occurs during welding and there is a big difference in welding quality depending on the welding position. In order to overcome this problem, this study intends to conduct basic research to apply laser welding to ASTM A553M-17 material. In Part I, the bead shape according to the welding output was analyzed and in PART II, the penetration phenomenon according to the welding speed was analyzed after Bead on Plate (BOP) test. As a result of analyzing the bead shape according to laser power performed in this study, it was confirmed that the laser power and penetration depth are proportional to some extent. In addition, a range of suitable welding power was proposed for the 6.1mm thickness material performed in this study.
목차
ABSTRACt 1. 서론 2. ASTM A553M-17소재 BOP test 3. BOP 실험 결과 분석 4. 결론 5. 사사 References
키워드
국제해사기구파이버 레이저 용접레이저 출력비드 형상IMOFiber laser weldingASTM A553M-17Laser powerBead shape
저자
김재웅 [ Jae-Woong Kim | Korea Institute of Industrial Technology, Researcher ]
Corresponding Author