Spot Welding Parameters Influence on the Assembled Structures Behavior
Abstract
Resistance spot welding (RSW) remains a critical joining technique in the automotive and aerospace industries due to its efficiency in assembling thin metallic sheets. However, the mechanical integrity of spot welds is often compromised by tensile stresses perpendicular to the weld plane, leading to premature failure. This study proposes a systematic experimental approach to quantify the influence of welding parameters, such as current intensity, electrode pressure, and welding time, on the tensile strength of welded joints. The novelty of this work lies in establishing a direct correlation between process parameters and joint performance to maximize weld strength without compromising microstructural integrity. Hardness tests confirmed that the hardness of the weld point depends on the initial microstructure of the base material and on the welding conditions. The results demonstrate that increasing current and welding time within controlled limits enhances nugget formation and joint resistance by up to 25% compared to conventional settings. These findings provide valuable insights for optimizing RSW processes to achieve reliable and high-quality assemblies.
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Papers accepted for publication become the copyrighted property of the Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology. No part of the publication may be reproduced or transmitted in any form, or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, except in limited quantities for the non-commercial purposes of scientific or educational advancement, without permission in writing from the Editorial Board.
