Advanced Search  
JWJ > Volume 26(5); 2008 > Article
Journal of KWJS 2008 October;26(5) :79-89.
Published online November 12, 2008.
Evaluation on Resistance Spot Weldability and Nugget Formation of Surface Roughness Treated Steel Sheet
Ki-Hong Kim, Yung-Min Choi, Young-Seok Kim, Young-Mok Rhym, Ji-Hun Yu, Nam-Hyun Kang, Yeong-Do Park






Correspondence:   Published online November 12, 2008
ABSTRACT
  With the increased use of surface textured steel sheet in body-in-white assembly, resistance spot weldability of these steels is considered to be an important subject. This study evaluated nugget formation and weldability by measuring dynamic resistance with various weld pressure, current, and weld time for steel sheet with two different surface roughnesses. The surface roughness for T-H steel (R<SUB>a</SUB>=1.79 ㎛) was higher than that for T-L steel (R<SUB>a</SUB>=1.33 ㎛), and resulted in increased contact resistance and heating for T-H steel spot welding. Therefore, at low weld current and weld cycle ranges, the T-H steel showed better weldability over the T-L steel. The evaluations of weld interface showed that the fusion zone in the T-H steel sheet was continuous in contrast to discontinuous fusion zone for T-L steel sheet at the same welding conditions. A comparison of dynamic resistance and tensile-shear strength (TSS) between T-H and T-L steel sheet suggested that high surface roughness provided larger heating at early cycle of welding and larger TSS.
Keywords: Resistance spot welding;Weld nugget;Surface roughness;Dynamic resistance;Cold rolled steel sheet
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
1,120
View
0
Download
Related articles
The Resistance Spot Weldability of a Stainless Steel/Aluminium/Low Carbon Steel 3-Ply Clad Sheet  2018 February;36(1)
Effects of Phosphorus and in-situ Post-heat Pulse Conditions on Resistance Spot Weldability of High Si DP980 Steel Sheet  2015 December;33(6)
Lobe Curve Characteristic Analysis of Resistance Spot Welding for Sheet Combination of 780MPa Steel Sheet Using Simulation  2012 December;30(6)
Evaluation of Corrosion Resistance and Weldability for the Butt Welding Zone of Hot Rolled Clad Steel Plates  2013 October;31(5)
A Comparison of Spot Weldability with Electrode Force Changes in Surface Roughness Textured Steel  2008 April;26(2)
The Resistance Spot Weldability of a Stainless Steel/Aluminium/Low Carbon Steel 3-Ply Clad Sheet  2018 February;36(1)
Effects of Phosphorus and in-situ Post-heat Pulse Conditions on Resistance Spot Weldability of High Si DP980 Steel Sheet  2015 December;33(6)
Lobe Curve Characteristic Analysis of Resistance Spot Welding for Sheet Combination of 780MPa Steel Sheet Using Simulation  2012 December;30(6)
Evaluation of Corrosion Resistance and Weldability for the Butt Welding Zone of Hot Rolled Clad Steel Plates  2013 October;31(5)
A Comparison of Spot Weldability with Electrode Force Changes in Surface Roughness Textured Steel  2008 April;26(2)
e-sciencecentral
Register for e-submission
Register here to access the e-submission system of Journal of KWJS for authors and reviewers.
Manuscript Submission
To submit a manuscript, please visit the Journal of KWJS e-submission management system at http://submit.e-jwj.org, read the Instructions for Authors, and log into the Journal of KWJS 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.