This work is aimed at the analysis of the dynamic resistance, electrical energy and behavior of the force between electrodes (including thermal expansion) during welding at optimized parameters, referring to the process of spot welding using additive manufacturing (AMSW). For comparative purposes, this analysis also includes the conventional resistance spot welding process (RSW). The experiments were done on low carbon-zinc-coated sheets used in the automotive industry. The results regarding the welding process using additive manufacturing (AMSW), in comparison to the conventional resistance spot welding (RSW), showed that the dynamic resistance presented a different behavior due to the collapse of the deposition at the beginning of the welding, and that a smaller magnitude of electrical energy (approximately <3.35 times) is required to produce a welding spot approved in accordance with the norm. No force of thermal expansion was observed during the passage of the current, in contrast, there was a decrease in the force between the electrodes due to the collapse of the deposition at the beginning of the welding.

中文翻译：

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增材制造电阻点焊中动电阻，电能和电极间力的行为分析

这项工作旨在分析在优化参数下焊接过程中的动态电阻，电能和电极之间的力行为（包括热膨胀），涉及使用增材制造（AMSW）的点焊过程。为了进行比较，该分析还包括常规的电阻点焊工艺（RSW）。实验是在汽车工业中使用的低碳锌涂层板上完成的。与常规电阻点焊（RSW）相比，使用增材制造（AMSW）进行焊接工艺的结果表明，动态电阻由于在焊接开始时沉积物的塌陷而表现出不同的行为，并且较小的电能（大约<3。35次）以生产出符合规范的焊接点。在电流通过期间未观察到热膨胀力，相反，由于在焊接开始时沉积物的塌陷，电极之间的力减小了。