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首页> 外文期刊>Journal of Materials Engineering and Performance >Suggestion of an Indicator to Evaluate Material Deposition in Resistance Spot Welding: Weld–Surface Interaction Index
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Suggestion of an Indicator to Evaluate Material Deposition in Resistance Spot Welding: Weld–Surface Interaction Index

机译：评估电阻点焊材料沉积的指示器的建议：焊接表面相互作用指数

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摘要

Resistance spot welding (RSW) is still leading joining process in the automotive industry due to the simplicity and speed of the process. On the other hand, galvanized steel sheets provide improvement in corrosion resistance of the auto body. Material deposition has an influence on the corrosion resistance and weld strength; however, in the literature very little effort has been made to identify any weld–surface interaction numerically. In this study, a numerical approach called “Weld–Surface Interaction Index” (I~(WSI)) has been introduced to investigate the effect of material deposition on the corrosion sensitivity of the welding zone and its periphery. A systematic investigation was carried out to better understand the effects of an electrode cap–galvanized steel sheet interface on the corrosion resistance of spot-welded steel. The chemical composition of DP600 steel sheet and Z-Trode electrode cap was analyzed by using a spectrometer. The specimens were then joined by using same caps up to 1200 welds. SEM–EDS analysis was also performed on the chosen specimens to determine the weight percentages (wt.%) of Fe, Zn and Cu. EDS analysis results and coefficient of variation wt.% of Fe, Zn and Cu were used to compose I~(WSI)formula. In the proposed formula, wt.% of Zn represented resistivity of the cover to corrosion, while wt.% of Fe represents the vulnerability.
机译：由于过程的简单性和速度，电阻点焊（RSW）仍然是在汽车行业中的加入过程。另一方面，镀锌钢板提供了汽车体腐蚀性的提高。材料沉积对耐腐蚀性和焊接强度有影响;然而，在文献中，已经努力识别数值识别任何焊接表面相互作用。在该研究中，已经引入了一种称为“焊接表面相互作用指数”（I〜（WSI））的数值方法，以研究材料沉积对焊接区及其周边腐蚀性敏感性的影响。进行了系统的调查，以更好地了解电极盖镀锌钢板界面对点焊钢的耐腐蚀性的影响。通过使用光谱仪分析DP600钢板和Z级电极盖的化学组成。然后通过使用相同的盖子连接标本，该样品高达1200焊缝。还对所选择的试样进行SEM-EDS分析，以确定Fe，Zn和Cu的重量百分比（wt。％）。 EDS分析结果和变异系数Wt。使用Fe，Zn和Cu的％，组成I〜（WSI）公式。在所提出的公式中，WT。Zn的％代表盖子的电阻率腐蚀，而WT％。FE代表漏洞。

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