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http://dx.doi.org/10.3744/SNAK.2016.53.6.473

Effects of Reduction Groove Angle on Strength Characteristics of FCAW Weldment  

Lee, Sang-Chul (STX Offshore & Shipbuilding)
Jo, Sung Woo (Dept. of Naval Architecture and Ocean Engineering, Pusan National University)
Yang, Jong Soo (STX Offshore & Shipbuilding)
Choi, Kyu Won (STX Offshore & Shipbuilding)
Seo, Jung Kwan (The Korea Ship and Offshore Research Institute, Pusan National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.53, no.6, 2016 , pp. 473-481 More about this Journal
Abstract
Thick plate is currently widely used in shipbuilding due to the increasing of size of ships. However, its use has increased welding groove angles and volume. The welder's technique must be good enough to improve productivity while preventing defects. Generally, the groove angle can be reduced to less than a flux-cored arc welding (FCAW) machine setting of $35{\pm}5^{\circ}$, requiring fewer welding passes while maintaining high productivity and reduced heat input. Therefore, welding technique can be prevented by improved mechanical properties and welding deformation. Welding defects such as lack of fusion (LF), lack of penetration (LP) and hot cracking should be considered when reducing the groove angle for related applications. In this study, a welding groove angle of $25{\pm}5^{\circ}$ is verified as suitable for FCAW design and fabrication. The experimental results confirm the effects on the strength characteristics of FCAW weldment when reducing groove angle to improve the productivity of shipbuilding industries.
Keywords
Groove angle; Thick plate; Strength Characteristic; FCAW(Flux Cored Arc Welding);
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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