JWJ > Volume 32(2); 2014 > Article
Journal of Welding and Joining 2014 April;32(2) :196-201.
Published online May 14, 2014.
Resistance Spot Welding Characteristics of Mg Alloy Applying Current Waveform Control
Dong-Soon Choi*, In-Sung Hwang*, Dong-Cheol Kim*, Jae-Wook Ryu**, Moon-Jin Kang*
*Advanced Welding & Joining R&BD Group, KITECH, Incheon 406-840, Korea
**Korea Metal Material Research Association, Seoul 138-950, Korea
Correspondence: In-Sung Hwang  Email: hisman@kitech.re.kr
  Published online May 14, 2014
ABSTRACT
In automotive industry, applying of Mg alloy to autobody has been issued recently as a light metal. But poor resistance spot weldability of Mg alloy is blocking commercialization. So studies on improving resistance spot weldability of Mg alloy is increasing continuously. For reduce loss of heat input during welding, inverter DC power source is considered because of short rise time to target welding current. But rapid rising of welding current can increase temperature rapidly in nugget and oxide film between electrode and base metal, and that causes generating expulsion on low welding current range. In this study, for increase optimum welding current range and prevent generating expulsion, applicate various types of welding current waveform controls during resistance spot welding. For analysis effects of each current waveform control, acceptable welding current regions according to electrode force and welding time is determined and lobe diagram is derived. In result, pre heat is proposed as optimum type of welding current waveform control.
Keywords: Resistance spot welding | Mg alloy | Current waveform control | Weldability
TOOLS
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
CrossRef TDM  CrossRef TDM
  E-Mail
Share:      
METRICS
858
View
2
Download
Related articles
Laser Welding Characteristic of Dissimilar Metal for Aluminum to Steel  2017 September;35(5)
A Study of Characteristics of Vertical-up SMA Welding by Short Circuit Control  2017 October;35(5)
A Study on Welding Process Algorithm through Real-time Current Waveform Analysis  2015 August;33(4)
Evaluation of Gas Metal Arc Welding Characteristics according to Contact Tip Materials  2014 December;32(6)
Laser Welding Characteristics of Aluminum and Copper Sheets for Lithium-ion Batteries  2013 December;31(6)
Laser Welding Characteristic of Dissimilar Metal for Aluminum to Steel  2017 September;35(5)
A Study of Characteristics of Vertical-up SMA Welding by Short Circuit Control  2017 October;35(5)
A Study on Welding Process Algorithm through Real-time Current Waveform Analysis  2015 August;33(4)
Evaluation of Gas Metal Arc Welding Characteristics according to Contact Tip Materials  2014 December;32(6)
Laser Welding Characteristics of Aluminum and Copper Sheets for Lithium-ion Batteries  2013 December;31(6)
e-sciencecentral
Register for e-submission
Register here to access the e-submission system of Journal of Welding and Joining for authors and reviewers.
Manuscript Submission
To submit a manuscript, please visit the Journal of Welding and Joining e-submission management system at http://submit.e-jwj.org, read the Instructions for Authors, and log into the Journal of Welding and Joining e-submission system. For assistance with manuscript submission, please contact: koweld@kwjs.or.kr.
Free archive
Anyone may access any past or current articles without logging in.
Editorial Office
The Korea Science and Technology Building, New B/D, Room 503
Teheran-ro 7-gil, 22(635-4, Yeoksam-Dong), Gangnam-gu, Seoul 06130, Korea
TEL : +82-2-538-6511    FAX : +82-2-538-6510   E-mail: koweld@kwjs.or.kr
Browse Articles |  Current Issue |  For Authors and Reviewers |  About
Copyright© by The Korean Welding and Joining Society. All right reserved.