액화수소 저장 탱크용 STS 304, STS 316L 소재의 레이저 용접 적용을 위한 기초 BOP 연구
A Study on the BOP Test for Laser Welding Application of STS 304 and STS 316L to Liquified Hydrogen Tank
Liquified hydrogen is considered a new energy resource to replace conventional fossil fuels due to environmental regulations by the IMO. When building tank for the storage and transportation of liquified hydrogen, materials need to withstand temperatures of -253°C, which is even lower than that of LNG (-163°C). Austenitic stainless steel mainly used to build liquified hydrogen tank. When building the tanks, both the base material and welding zone need to have excellent strength in cryogenic condition, however, manual arc welding has several issues due to prolonged exposure of the base material to high temperatures. Laser welding, which has some benefits like short period of exposure time and decrease of thermal affected zone, is used many industries. In this study, laser bead on plate welding was conducted to determine the laser butt welding conditions for STS 304 and STS 316L steels. After the BOP test, cross-section observations were conducted to measure and compare four bead parameters. These tendency result of laser BOP test can be used as conditions laser butt welding of STS 304 and STS 316L steel.
목차
ABSTRACT 1. 서론 2. 실험 재료 및 방법 2.1 실험 재료 2.2 레이저 BOP 수행 방법 2.3 단면관찰 분석 방법 3. 실험 결과 4. 결론 5. 사사 References
키워드
레이저 용접스테인리스 스틸 304스테인리스 스틸 316L액화 수소비드 온 플레이트Laser weldingSTS 304STS 316LLiquified hydrogenBead on plate
저자
하을용 [ Eul-Yong Ha | 한국생산기술연구원 ]
표창민 [ Changmin Pyo | 한국생산기술연구원 ]
김재웅 [ aewoong Kim | 한국생산기술연구원 ]
Corresponding Author