The present paper aims to study the behaviour of Metal Active Gas (MAG) tailor welded blanks during the single point incremental forming process (SPIF) from an experimental point of view. The single point incremental forming process was chosen for manufacturing truncated cone and truncated pyramid shaped parts. The same material (S355) and the same thickness (0.9 mm) were selected for the joining of blank sheets because the main goal of the paper was to study the influence of the MAG welding process throughout the SPIF process. A Kuka robot, equipped with a force transducer and an optical measurement system were used for manufacturing and evaluating the parts by SPIF. The selected output data were major and minor strain, thickness reduction, forces and springback at the SPIF process. Another line test was performed to evaluate the formability in SPIF. The main conclusion of the paper is that during the SPIF process, fractures occur in one side welded blanks even at moderate wall angles, while in the case of double side welded blanks there is a decrease of formability but parts can still be produced at moderate angles (55 degrees) without any problems.

中文翻译：

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单点增量成形过程中金属活性气体定制缝焊毛坯性能的实验研究

本文旨在从实验的角度研究金属活性气体（MAG）定制焊接毛坯在单点增量成形过程（SPIF）中的行为。选择了单点增量成型工艺来制造圆锥台和圆锥台。选择相同的材料（S355）和相同的厚度（0.9 mm）用于连接空白板，因为本文的主要目的是研究MAG焊接工艺在整个SPIF工艺中的影响。使用配备力传感器和光学测量系统的Kuka机器人通过SPIF生产和评估零件。所选的输出数据是SPIF过程中的主要和次要应变，厚度减小，力和回弹。进行了另一条线测试以评估SPIF中的可成型性。该论文的主要结论是，在SPIF过程中，即使在中等角度的情况下，一侧焊接的毛坯也会发生断裂，而在双面焊接的毛坯的情况下，成形性降低，但仍可以在中等角度下产生零件（55度）没有任何问题。