Browse > Article
http://dx.doi.org/10.3795/KSME-A.2006.30.5.481

Weldability and Optimum Welding Conditions on the 4 Lap Spot Welded Joint of High Strength Steel Sheets in Automobile  

Kwon Il-Hyun (전북대학교 정밀기계공학과, 자동차신기술연구센터)
Kim Hoi-Hyun (전북대학교 대학원 정밀기계공학과)
Baek Seung-Se (전북대학교 대학원 정밀기계공학과)
Yang Seong-Mo (전북대학교 정밀기계공학과, 자동차신기술연구센터)
Yu Hyo-Sun (전북대학교 대학원 정밀기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.30, no.5, 2006 , pp. 481-487 More about this Journal
Abstract
Spot-welding is a widely used manufacturing method for thin-sheet components, especially in mass-production industries such as the car industry. Automobiles are often constructed by multi-lap spot welding to secure the passenger from the accident, where optimisation of the welding conditions is a major economic consideration. This research is conducted to investigate weldability characteristics with various welding conditions on the 4-lap spot welded joint of structural steel sheets in automobile. The relationship between the tensile-shear strength and the indentation depth has been investigated to propose the optimum welding conditions. The welding current and the welding time have a greater effect on the welding characteristics than the electrode force. It was found that the electrode force has a relatively close relationship with the expulsion occurrence. The design curves for optimum welding are proposed for the 4-lap spot welded joint.
Keywords
Spot Welding; Indentation Depth; Weldability Characteristics; High Strength Steel Sheet; Zinc Coated Steel Sheet; 4-lap Spot Welded Joint;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Cho, S.M., 1997, 'Principle of Resistance Welding and Analysis of Monitoring Results,' Journal of KWS, Vol. 15, No. 2, pp. 1-10   과학기술학회마을
2 Seo, D.W., Yoon, H.C., Joen, Y.B., and Lim, J.K., 2003, 'Effect of 3pot Welding Conditions on Spatter and Mechanical Strength Properties,' Journal of KWS, Vol. 21, No. 2, pp. 200-205   과학기술학회마을
3 KS B 0850, 1996, 'Method of Inspection for Spot Weld,' pp. 1-7
4 Shin, H.I., and Kang, S.S., 1994, 'A Study on the Spot Weldability of High Strength Steel Sheet and Two Stories Zinc Coated High Strength Steel Sheet,' Journal of KWS, Vol. 12, No. 3, pp. 56-63   과학기술학회마을
5 Gdeon, S.A., 1984, 'Metallurgical and Process Variables Affecting the Resistance Spot Weldability of Galvanized Sheet Steels,' SAE 840113, pp. 14-28
6 Min, J.K., Oh, Y.K., and Kim, G.S., 1996, 'A Study on the Spot Weldability of Automotive Steel Sheet,' Journal of KWS, Vol. 14, No. 3, pp. 41-47   과학기술학회마을
7 Paik, J.K., Chung, J.Y., and Paik, Y.M., 1999, 'On Daynamic/Impact Tensile Strength Characteristics of Thin High Tensile Steel Materials for Automobile,' The Korean Society of Automotive Engineers, Vol. 7, No. 2, pp. 268-278
8 Chuko, W.L., and Gould, J.E., 2002, 'Development of Appropriate Resistance Spot Welding Practice for Transformation-Hardened Steels,' Welding Journal, pp. 1s-7s
9 Vandenbossche, V., 1977, 'Ultimate Strength and Failure Mode of Spot Welds in High Strength Steels,' SAE 770214, pp. 1-12
10 Lee, S.I, Kwon, I.H, Lee, B.J, Yu, H.S., 2001, 'A Study of Fatigue Life Prediction for Automotive Spot Weldment Using Local Strain Approach,' Transactions of the Korean Society of Mechanical Engineers, Vol. 25, No. 2, pp. 220-227   과학기술학회마을