[ISMT2021] Effect of parameters on penetration properties in butt welding of super duplex stainless steel using PAW-TIG heat source
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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. Re-cently, 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.
Abstract
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. Re-cently, 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.
참고문헌 (18)
- S. Jo, "A Study on Air Pollutant Emission Characteristics of Ships by Vessel Speed Reduction", Master, Department of Marine Engineering, pp.2020
- 박인영, "A study on corrosion of distance piece on Exhaust Gas Cleaning Systems (EGCS) discharge water line", 한국마린엔지니어링학회지, 44(6), pp.453~456 (2020), 한국마린엔지니어링학회[DOI]
- Official journal of the European Union, "Directive 2014", 90, 98, pp.EC, European Union, 2014[DOI]
- Official journal of the European Union, "Regulations commission implementing regulation (EU) 2020", 1170 of 16July 2020 on design, construction and performance requirements and testing standards for marine equipment and repealing Implementing Regulation (EU) 2019, European Union, (EU)2020, pp.1170, 2020[DOI]
- IMO, "Resolution MEPC.184(59) adopted on 17 July 2009_2009 guidelines for exhaust gas cleaning systems", IMO, MEPC.184(59), ~ (2009)
- IMO, "Resolution MEPC.259(68) adopted on 15 May 2015_2015 guidelines for exhaust gas cleaning systems", IMO, MEPC.259(68), ~ (2015)
- J. H. Lee, "Understanding of Stainless Steel" (2016), Myungjin Publishing Company
- Korean Register, "Exhaust Gas Cleaning Systems Technical Information for Ship-Owner and Surveyor" (2018), Korean Register
- Korean Register Technology Team, "Ship-Owner’s Guide to Respond for Enhanced Global SOx Regulatory" (2018), Korean Register
- 정진아, "Electrochemical and on-site tests for the application of cathodic protection on the inner surface of seawater pipes", 한국마린엔지니어링학회지, 43(8), pp.610~617 (2019), 한국마린엔지니어링학회[DOI]
- BSI Standards Publication, "Welded steel tubes for pressure purposes – Technical delivery conditions- Part 7: Stainless steel tubes" (2014), EN
- 최우현, "Application of Plasma Arc Welding for Anti-Corrosive Material with High Molybdenum Content", 대한용접접합학회지, 38(3), pp.248~253 (2020), 대한용접접합학회[DOI]
- 정성훈, "A6061 알루미늄합금 판재의 맞대기 TIG용접에서 반응표면법을 이용한 최적용접조건선정에 관한 연구", 대한용접접합학회지, 36(3), pp.1~7 (2018), 대한용접접합학회[DOI]
- The Korean Welding and Joining Society, "Welding and Joining Manual" (2007), GS Intervision Publishing Company
- J. D. Kim, "Familiar Welding and Joining Engineering" (2010), Dasom Publishing Company
- BSI Standards Publication, "Metallic materials - Tensile testing - Part 1: Method of test at room temperature" (2016), EN
- BSI Standards Publication, "Destructive tests on welds in metallic materials - Bend tests" (2011), EN
- J. -S. Yeo, "Effect of parameters on penetration properties in butt welding using PAWTIG heat source with super duplex stainless steel", Proceedings of the International Symposium on Marine Engineering and Technology 2021 (2021)