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Spot welding

About: Spot welding is a research topic. Over the lifetime, 12491 publications have been published within this topic receiving 89845 citations. The topic is also known as: Spot_welding.


Papers
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Journal ArticleDOI
TL;DR: In this article, a 2D finite element model is developed based on fully coupled electrical-thermal and incrementally coupled thermal-mechanical analysis to study the growth rate of the weld nugget as a function of welding time and current.

33 citations

Journal ArticleDOI
TL;DR: In this paper, 1.5mm thick 6061-T6 aluminum alloy plates were subjected to friction stir spot welding (FSSW) at a very low rotation speed of 30, 40 and 50 rpm, aiming to prevent the hardness reduction in the heat affected zone (HAZ) of this precipitate hardening Al joints.

33 citations

Journal ArticleDOI
Jing Bi1, JianLing Song, Qiang Wei, Yu Zhang1, Yang Li1, Zhen Luo1 
TL;DR: In this paper, the authors reported the shunting characteristics of dissimilar aluminum alloys 2219/5A06 of unequal-thickness for the resistance spot welding (RSW) process.

33 citations

Journal ArticleDOI
TL;DR: In this article, a high-speed video imaging system was employed to directly measure the electrode displacement of the small scale resistance spot welding (SSRSW) process, which eliminates a number of potential error sources inherent in other electrode displacement measuring techniques.
Abstract: A high-speed video imaging system was employed to directly measure the electrode displacement of the small scale resistance spot welding (SSRSW) process. This measurement technique was chosen because it eliminates a number of potential error sources inherent in other electrode displacement measuring techniques. Careful observation of the heating and cooling portions of the electrode displacement curves revealed that each is comprised of two identifiable segments. Distinct high-velocity segments of the displacement curves were thought to correspond to solid-liquid phase transitions in the weld nugget, while lower-velocity portions corresponded to thermal expansion or contraction of solid material. It was found that the magnitudes of the high speed portions of the electrode displacement were more closely correlated with the weld nugget thickness than was the overall magnitude of the electrode displacement. Furthermore, all measures of electrode displacement were more closely correlated to weld nugget thickness than to nugget diameter.

33 citations

Journal ArticleDOI
TL;DR: In this paper, seam welding of Al/Fe sheets is reported to be difficult and little reported in literature, and it is recommended to use seam welding rather than spot welding in order to ensure good weld strength and joint tightness.
Abstract: Aluminium (Al), despite its low melting point, has a high electric conductivity and thermal conductivity but poor heating efficiency, ranking as a hard-to-weld material. It is routinely necessary to weld aluminium sheets to sheets made of a dissimilar metal, such as steel sheets (Fe). In this case, it is advisable to use seam welding than spot welding in order to ensure good weld strength and joint tightness. However, seam welding of Al/Fe sheets is difficult and little reported in literature.

33 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023208
2022415
2021355
2020620
2019739
2018744