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http://dx.doi.org/10.5781/KWJS.2009.27.1.102

A Study on Servo DC Resistance Spot Welding of Mg Alloy Sheet(1)  

Jung, Sun-Nyeo (Graduate School, Myongji University)
Chang, Hee-Seok (Department of Mechanical Engineering, Myongji University)
Lee, Mok-Young (Welding Center, RIST)
Publication Information
Journal of Welding and Joining / v.27, no.1, 2009 , pp. 102-107 More about this Journal
Abstract
Weldability of Mg alloy was investigated using servo-actuated DC resistance spot welder. Due to its uncommon electrical and mechanical properties, lots of voids and cracks were observed inside nugget with conventional weld schedule. Lobe curve was proposed to clarify proper electrode force and weld current, which guarantee reasonable weld strength and fatigue life. Macro structure of sectioned specimen was examined to count total number of void and crack. Post weld schedule is also proposed to reduce micro victors hardness value of weld zone.
Keywords
Mg alloy; Servo-actuated resistance Spot welder; Lobe curve; Dynamic resistance;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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