Browse > Article

A Study on Effects of Welding Clearance on Spot Weldability  

임재규 (전북대학교 기계공학부, 자동차 신기술연구소)
양승현 (전북대학교 대학원 기계설계학과)
국중하 (전북대학교 대학원 기계설계학과)
Publication Information
Journal of Welding and Joining / v.20, no.1, 2002 , pp. 55-61 More about this Journal
Abstract
The automobile is made up of about twenty thousand parts. Some parts are formed by pressing and combined by spot welding. Among them, steel palate of fuel tank is formed in the metal mold and bending parts are jointed by spot and seam welding. To find weldability conditions of spot welding, clearance between two welding steel plates was made and after spot welding, weldability is evaluated by means of tensile shear load, nugget size and shape. Specimen used in this study was a mild steel of 1.2mm thickness and electrode was Cu-Cr alloy of 6mm diameter. When spot welding started, the clearance of two steel plates was changed 0mm, 3mm and 5mm step by step. The fractured surface of specimen after this test was observed by Optical Microscope to measure microstructure and nugget shape. When clearance of two specimen was 3mm and 5mm, strength and nugget size was decreased and nugget shape was not clear.
Keywords
Spot welding; Weldability; Clearance; Tensile shear test; Fracture surface; Nugget;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 The Study on Microstructures and Mechanical Properties of Mild Steel Joined with Various Spot Welding Conditions /
[ Yeon Chel Kang ] / Journal of KWS   과학기술학회마을
2 /
[ I. C. Kang ] / Modern Welding Engineering
3 A Study on the Spot Weldability of Hot-dip Galvannealed Steel Sheet /
[ Won Cheol Shin;Joon Key Min; Chang Che Shur ] / Journal of the Korean Inst. of Met. & Mater.
4 Principle of Resistance Welding and Analysis of Monitoring Results /
[ S. M. Cho ] / J. Of KWS.
5 Effect of Weldability Condition on Spot Welding of Galvanized Steel Sheet /
[ Jun Soo Lee;Eog Yong Chin ] / Journal of the Korean Inst. of Met. & Mater.
6 /
[] / Welding Handbook(Sixth Edition)
7 /
[ O. P. Gupta ] / Journal of Manufacturing Science and Engineering