레이저 용접조건이 극저온환경용 금속재료의 용접 비드 형상에 미치는 영향에 대한 연구Part I : 고망간강
Research for Correlation Between Shape of Bead on Plate and Laser Welding Condition of Cryogenic Materials Part I : High Manganese Steel
As demand for eco-friendly energy increases, demand for natural gas and Liquefied natural gas (LNG) storage technologies continues to increase. LNG is a cryogenic environment with a temperature of -163°C, so ordinary metals cannot be used due to brittleness. Accordingly, IGC Code designates the cryogenic materials such as Invar, STS304L, Al5083-0, and High Manganese Steel. For fabricating those materials, research on welding possibility is the most important. Thus this study focused on the possibility of laser welding of the cryogenic materials. The weldability of High Manganese Steel was researched in this paper, the shape and the dimensions of the beads after bead on plate (BOP) welding were observed. The experiment was conducted on a total of 25 cases with laser power and welding speed of 5 cases each, and the width, height, and penetration of the beads were confirmed. It was confirmed that the paramenter of bead increased linearly with the laser power, and the paramenters of bead increased linearly with decreasing welding speed. Based on this study, high manganese steel can be applied in various industries by applying it to butt welding.
목차
ABSTRACT 1. 서론 2. 실험 방법 2.1 실험 장비 2.2 용접 시편 2.3 용접 변형부 측정 3. 실험 결과 4. 결과 분석 4.1 Bead 형상 분석 4.2 레이저 전력에 따른 영향 4.3 용접 속도에 따른 영향 5. 결론 References
키워드
고망간강레이져 용접비드 온 플레이트극저온용 소재High manganese steelLaser weldingBOPCryogenic material
저자
김지선 [ Ji-Sun Kim | Korea Institute of Industrial Technology. ]
김재웅 [ Jae-Woong Kim | Korea Institute of Industrial Technology. Resrarcher ]
Corresponding Author