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http://dx.doi.org/10.5916/jkosme.2012.36.8.1069

Characteristics of Fiber Laser Welding on STS304L for GTT MARK III Membrane  

Kim, Jong-Do (한국대학교 기관공학부)
Lee, Chang-Je (STX 조선해양(주) 기술연구소)
Song, Moo-Keun (한국해양대학교 대학원)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.36, no.8, 2012 , pp. 1069-1075 More about this Journal
Abstract
Laser is high density heat source, so it can make high speed welding with minimum heat input possible. Especially the high power fiber laser is recently commercialized and has high beam quality and the smallest system size compared with conventional laser due to it's unique oscillating mechanism. Because of these advantages it's thought that the most suitable heat source for LNG cargo tank welding precess which has to be conducted inside of ships. In this study fiber laser was used for welding of stainless steel for LNG carrier to applicate laser welding technique for shipbuilding industry. 1.2mmt STS304L of austenite stainless steel which apply to cargo tank was used for fiber laser welding. Butt and lap welding was conducted changing laser power, welding speed, then penetration characteristic was analyzed and optimal parameters for each materials. Consequently, we found that same or better mechanical properties were obtained in weld compared to base metal.
Keywords
Fiber laser welding; LNG cargo tank; Austenite stainless steel; Mechanical property;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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