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http://dx.doi.org/10.5781/JWJ.2014.32.1.15

Evaluation on Mechanical Properties with Welding Processes for Off Shore Wind Tower Application  

Ji, Changwook (School of Materials Science and Engineering, Pusan National University)
Choi, Chul Young (School of Materials Science and Engineering, Pusan National University)
Nam, Dae-Geun (Dongnam Regional Division, Korea Institute of Industrial Technology)
Kim, Hyoung Chan (Dongnam Regional Division, Korea Institute of Industrial Technology)
Jang, Jae Ho (Dongnam Regional Division, Korea Institute of Industrial Technology)
Kim, Ki Hyuk (Plate Research Team and R&D Center, Dongkuk Steel)
Park, Yeong-Do (Department of Advanced Materials Engineering, Dong-Eui University)
Publication Information
Journal of Welding and Joining / v.32, no.1, 2014 , pp. 15-21 More about this Journal
Abstract
FCAW(Flux Cored Arc Welding), SAW(Submerged Arc Welding), EGW(Electro Gas Welding), and three-pole SAW are applicable in manufacturing the offshore wind tower. In this paper, mechanical properties of these welded-joints for TMCP steels were evaluated in all above welding processes. The tensile strength of welded-joints for all the welding methods satisfied the standard guideline (KS D 3515). No cracking on weldment was found after the bending test. Changes of weldedments hardness with welding processes were observed. In a weld HAZ (heat-affected zone), a softened HAZ-zone was formed with high heat input welding processes (SAW and EGW). However, the welded-joint fractures were found in the base metal for all cases and small decrease in welded-joint strength was caused by a softened zone. The multi-pole SAW welds exhibited similar mechanical properties comparing to the one with one-pole SAW process.
Keywords
FCAW; SAW; EGW; Wind tower; TMCP;
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Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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