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首页> 外文会议>Proceedings 2015 Innovation amp; Commercialization of Medical Electronic Technology Conference >Evaluation of nugget formation in resistance spot welding of dissimilar materials
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Evaluation of nugget formation in resistance spot welding of dissimilar materials

机译：异种材料电阻点焊中熔核形成的评估

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摘要

The scope of this research work focuses on resistance spot welding (RSW) for different material combination where the nugget formation process and microstructure were investigated using both finite element method (FEM) and experimental measurement. The finite element code SYSWELD was utilized for the simulation of a two dimensional axis-symmetric finite element model using customized electrode meshing inorder to develop a thermal-mechanical-electrical characteristic of the spot welds. The model was developed for welding dissimilar metals 1.2 mm low carbon steel and 1.0 mm DP600. The RSW simulation parameters such as welding current, electrode force, welding time and the temperature distribution of the welded sheets and electrodes were considered throughout the study. For the experimental process, similar welding parameters as used in the simulation were applied to the RSW machine. It was found that the weld nugget and HAZ size from numerical simulations were in good agreement with experimental results. Whereas for the microstructure, reasonable results were achieved between the predicted results and experimental observation.
机译：这项研究工作的重点是针对不同材料组合的电阻点焊（RSW），其中使用有限元方法（FEM）和实验测量方法研究了熔核形成过程和微结构。有限元代码SYSWELD用于使用定制的电极网格对二维轴对称有限元模型进行仿真，以开发点焊的热机械电特性。该模型是为焊接异种金属1.2毫米低碳钢和1.0毫米DP600而开发的。在整个研究过程中，都考虑了RSW模拟参数，例如焊接电流，电极力，焊接时间以及被焊接的板和电极的温度分布。对于实验过程，将模拟中使用的类似焊接参数应用于RSW机。通过数值模拟发现焊缝熔核和热影响区尺寸与实验结果吻合良好。而对于微观结构，在预测结果和实验观察之间取得了合理的结果。

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