Effect of Gap between Steel Sheet and Electrode on Resistance Spot Welding

Sho Matsui; Chisato Wakabayashi; Shinji Kodama

doi:10.4028/www.scientific.net/MSF.941.158

Paper Titles

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TMP as an Effective Technique to Produce Ultra-Fine Grained Steels
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Critical Conditions of Cold Cracking in High Strength Steel Weld Based on the Local Stress Distribution and Hydrogen Accumulation
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Effect of Gap between Steel Sheet and Electrode on Resistance Spot Welding
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Effect of Coiling Temperature on the Hardening Mechanisms of a High-Ti Steel
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Novel Hot-Rolled Structural Plate Steels with Yield Strength of 700 Mpa and Excellent Usability
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Deformation Structures in a Duplex Stainless Steel
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Development of the Projection Welding Technology for High-Strength Steel Sheets
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HomeMaterials Science ForumMaterials Science Forum Vol. 941Effect of Gap between Steel Sheet and Electrode on...

Effect of Gap between Steel Sheet and Electrode on Resistance Spot Welding

Abstract:

If resistance spot welding (RSW) is conducted when there is a gap between a steel sheet and an unmovable electrode, the steel sheets are bended by a movable electrode, and the quality of RSW is influenced. Therefore, it is necessary to understand the effect of the gap on RSW. In this study, two high-tensile strength steel sheets were welded with the gap. In addition, cross-section observations and cross tension tests were conducted to verify the effect of the gap on weldability and joint strength. Consequently, two notable results were obtained. First, the observation indicated that deformation around the corona-bond was varied depending on the gap. Second, the cross tension tests showed that the gap decreased the joint strength even though the nugget was large enough. These result indicated that controlling the gap is important to ensure the quality of RSW.

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Periodical:

Materials Science Forum (Volume 941)

Pages:

158-163

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.941.158

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Online since:

December 2018

Authors:

Sho Matsui*, Chisato Wakabayashi, Shinji Kodama

Keywords:

Joint Strength, Resistance Spot Welding, Steel Sheet

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