{"title":"The Influence of Shielding Gas on GTAW Welding of Aluminium Thin Sheets","authors":"S. Solic, M. Bušić","doi":"10.1145/3459104.3459158","DOIUrl":null,"url":null,"abstract":"This paper investigates the influence of helium used as shielding gas in mixture with argon in GTAW of aluminium thin sheets. Pure argon has been used in contrary to argon mixture containing 50% of helium. Different welding speeds and different currents have been varied as welding parameters during welding of EN AW 5754 H22 2 mm thick test coupons. The heat input has been calculated and compared in all welds. Weld geometry has been analysed on macro sections of produced welds, along with the bend testing according to the standard EN ISO 5173:2012. The results show that type of shielding gas interacts weld geometry and structure deformation. The argon-helium mixture had higher thermal conductivity, with the same heat input calculated resulting with different weld geometry. This research can be used for data considering on GTAW of aluminium alloy EN AW 5754 H22.","PeriodicalId":142284,"journal":{"name":"2021 International Symposium on Electrical, Electronics and Information Engineering","volume":"39 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 International Symposium on Electrical, Electronics and Information Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/3459104.3459158","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
This paper investigates the influence of helium used as shielding gas in mixture with argon in GTAW of aluminium thin sheets. Pure argon has been used in contrary to argon mixture containing 50% of helium. Different welding speeds and different currents have been varied as welding parameters during welding of EN AW 5754 H22 2 mm thick test coupons. The heat input has been calculated and compared in all welds. Weld geometry has been analysed on macro sections of produced welds, along with the bend testing according to the standard EN ISO 5173:2012. The results show that type of shielding gas interacts weld geometry and structure deformation. The argon-helium mixture had higher thermal conductivity, with the same heat input calculated resulting with different weld geometry. This research can be used for data considering on GTAW of aluminium alloy EN AW 5754 H22.
本文研究了氦气作为保护气体与氩气混合使用对铝薄板GTAW的影响。用纯氩气代替含50%氦气的混合氩气。对ena5754 H22 2mm厚试样焊接过程中不同的焊接速度和不同的焊接电流作为焊接参数进行了研究。对所有焊缝的热输入进行了计算和比较。根据标准EN ISO 5173:2012，对生产焊缝的宏观截面进行了焊缝几何形状分析，并进行了弯曲测试。结果表明，保护气体类型对焊缝几何形状和结构变形有影响。氩氦混合物具有较高的热导率，计算的热输入相同，但焊缝几何形状不同。本研究可为enaw5754h22铝合金的GTAW研究提供数据参考。
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