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논문 기본 정보

자료유형
학술저널
저자정보
Jun-Sub Yeo (Korean Register) Moo-Keun Song (Korea Maritime & Ocean University) Jong-Do Kim (Korea Maritime & Ocean University)
저널정보
한국마린엔지니어링학회 Journal of Advanced Marine Engineering and Technology (JAMET) 한국마린엔지니어링학회지 제46권 제1호
발행연도
2022.2
수록면
15 - 22 (8page)
DOI
10.5916/jamet.2022.46.1.15

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초록· 키워드

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The materials that make up pipes of exhaust gas cleaning systems (EGCS) installed in ships must have remarkable corrosion-resistant properties. Austenitic stainless steel has been widely utilized for such pipes owing to its excellent corrosion resistance. Recently, the demand for super duplex stainless steel (SDSS) has increased, which exhibits higher strength, hardness, and corrosion resistance than austenitic stainless steel. In response to this demand, considerable research on the application of SDSS to pipes in ships should be conducted. In this study, keyhole welding based on the plasma arc welding (PAW) process, which does not require bevel or filler metal, was applied to the SDSS used for a sulfur oxide (SOx) EGCS in eco-friendly ships. A tungsten inert gas (TIG) welding heat source was included to increase the welding quality and durability. To examine the welding properties of SDSS, the penetration characteristics of the PAW and TIG heat sources affecting SDSS were analyzed. The effects of various process parameters in PAW-TIG hybrid tandem bead welding and butt welding of SDSS were also evaluated. The experimental results verified the effects of welding variables (e.g., welding current, voltage, and velocity) on the penetration depth and bead width. A mechanical test conducted on butt weldments confirmed the integrity of the weldments.

목차

Abstract
1. Introduction
2. Experimental Materials and Method
3. Results and Discussion
4. Conclusions
References

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