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外层氧气引入对GPCA-TIG焊焊缝性能的影响

黄勇, 郭卫, 王艳磊

黄勇, 郭卫, 王艳磊. 外层氧气引入对GPCA-TIG焊焊缝性能的影响[J]. 焊接学报, 2016, 37(9): 5-8.
引用本文: 黄勇, 郭卫, 王艳磊. 外层氧气引入对GPCA-TIG焊焊缝性能的影响[J]. 焊接学报, 2016, 37(9): 5-8.
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HUANG Yong, GUO Wei, WANG Yanlei. Effects of oxygen outer gas on weld properties of gas pool coupled activating TIG welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(9): 5-8.
Citation: HUANG Yong, GUO Wei, WANG Yanlei. Effects of oxygen outer gas on weld properties of gas pool coupled activating TIG welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(9): 5-8.
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外层氧气引入对GPCA-TIG焊焊缝性能的影响

  • 1.

    兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室, 兰州 730050

  • 2.

    海芙德建筑产品(上海)有限公司, 上海 201601

基金项目: 国家自然科学基金资助项目（51265029）

Effects of oxygen outer gas on weld properties of gas pool coupled activating TIG welding

  • 1.

    State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China

  • 2.

    Hymetal Building Components(Shanghai) Co. Ltd., Shanghai 201601, China

摘要

    摘要
  • 摘要: 针对SUS304不锈钢，采用传统TIG焊和GPCA-TIG焊进行工件表面熔焊，对外层气体引入氧气的GPCA-TIG焊和传统TIG焊焊缝的氧含量、显微组织、拉伸性能和低温冲击韧性进行了测定. 结果表明，GPCA-TIG焊焊缝组织主要为奥氏体和铁素体，铁素体形态以骨架状和板条状为主. 外层引入氧气时，焊缝中的氧含量增加，耦合度为+2时焊缝中的氧含量高于耦合度为0时的，焊缝的抗拉强度均略低于母材的. 耦合度为0的GPCA-TIG焊焊缝冲击性能与传统TIG焊的相同，耦合度为+2的焊缝低温冲击韧性有所降低，达到传统TIG焊的85%.
    Abstract: Based on SUS304 stainless steel, bead-on-plate experiments for both ordinary TIG welding and GPCA-TIG welding using O2 as the outer gas were made to evaluate the oxygen content in the weld, micro-structure, the tensile properties and low temperature impact-toughness of the weld. The results show that, the weld micro-structure of GPCA-TIG welding mainly composites of austenite and ferrite. The morphology of ferrite is lacy and vermicular. Oxygen introduced as the outer gas makes the weld oxygen content increase. When the coupling degree is +2, the weld oxygen content is higher than that of coupling degree 0. The tensile strengths of the weld are all slight lower than those of the parent metal. The low temperature impact-toughness of the weld with coupling degree 0 is almost the same with that of TIG welding, while the low temperature impact-toughness value for coupling degree +2 is decreased and only reaches 85% of traditional TIG welding.
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    • 参考文献(7)
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    [2] 黄勇, 刘瑞琳, 樊丁, 等. 气体熔池耦合活性TIG焊方法[J]. 焊接学报, 2012, 33(9): 13-14. Huang Yong, Liu Ruilin, Fan Ding, et al. Gas pool coupled activating TIG welding method[J]. Transactions of the China Welding Institution, 2012, 33(9): 13-14.
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    [5] Sato Y, Kuwana T. Mechanical properties of extremely low oxygen steel weld metal[J]. Quarterly Journal of the Japan Welding Society, 1993, 11(1): 113-119.
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    [7] 樊丁, 刘自刚, 黄勇, 等. 电弧辅助活性TIG焊焊缝组织及性能分析[J]. 焊接学报, 2014, 35(4): 1-5. Fan Ding, Liu Zigang, Huang Yong, et al. Structure and properties of arc assisted activating TIG welding[J]. Transactions of the China Welding Institution, 2014, 35(4): 1-5.
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  • 收稿日期:  2015-05-06

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