Advanced Search
SUN Qingjie, ZHANG Qinghua, ZHAO Yongqing, GUO Jiawei, LI Tianyou, BAN Huakang, HOU Shaojun. Local dry underwater TIG welding process of positioning pin in nuclear power plant[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2024, 45(2): 7-12. DOI: 10.12073/j.hjxb.20230313003
Citation: SUN Qingjie, ZHANG Qinghua, ZHAO Yongqing, GUO Jiawei, LI Tianyou, BAN Huakang, HOU Shaojun. Local dry underwater TIG welding process of positioning pin in nuclear power plant[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2024, 45(2): 7-12. DOI: 10.12073/j.hjxb.20230313003

Local dry underwater TIG welding process of positioning pin in nuclear power plant

More Information
  • Received Date: March 12, 2023
  • Available Online: January 02, 2024
  • Taking the underwater welding of positioning pin in nuclear power plant as the research object, an underwater TIG welding gun with double-layer gas protection is developed. The motion trajectory is realized by DC motor driving the tungsten pole to rotate around a fixed diameter. The nuclear grade material Z2CN19-10 nitrogen-controlled stainless steel was welded. The weld formation of local dry underwater TIG welding was studied. The process parameters were optimized. The microstructure and mechanical properties of the joint were analyzed by combining the thermal cycle curve and arc shape. The results show that when the inner and outer layers are filled with argon, the weld is well formed and the arc shape is stable. Increasing the welding current or reducing the welding speed increases the weld penetration and the weld width. By comparing the underwater and onshore welded joints, it is found that the rapid cooling of water will promote the ferrite near the fusion line to change from dendritic to lath, reduce the austenite content and refine the grain. The microhardness and mechanical properties of underwater joints are slightly higher than those of onshore joints.

  • [1]
    Jia C B, Zhang Y, Zhao B, et al. Visual sensing of the physical process during underwater wet FCAW[J]. Welding Journal, 2016, 95(6): 202 − 209.
    [2]
    马兆炫, 刘一搏, 王建峰, 等. 双相不锈钢水下局部干法TIG焊接工艺[J]. 机械工程学报, 2022, 58(4): 48 − 54. doi: 10.3901/JME.2022.04.048

    Ma Zhaoxuan, Liu Yibo, Wang Jianfeng, et al. Underwater local dry tig welding of duplex stainless steel[J]. Journal of Mechanical Engineering, 2022, 58(4): 48 − 54. doi: 10.3901/JME.2022.04.048
    [3]
    韩雷刚, 钟启明, 陈国栋, 等. 局部干法水下焊接技术的发展[J]. 浙江大学学报, 2019, 53(7): 1252 − 1264.

    Han Leigang, Zhong Qiming, Chen Guodong, et al. Development of local dry underwater welding technology[J]. Journal of Zhejiang University, 2019, 53(7): 1252 − 1264.
    [4]
    沈相星, 程方杰, 邸新杰, 等. 水下局部干法焊接预热技术及专用排水罩的研制[J]. 焊接学报, 2018, 39(3): 112 − 116.

    Shen Xiangxing, Fangjie Cheng, Xinjie Di, et al. Local-dry underwater welding preheating technology and development of special drain cover[J]. Transactions of the China Welding Institution, 2018, 39(3): 112 − 116.
    [5]
    Wang Z M, Xie F X, Feng Y L, et al. Underwater robot local dry welding system[J]. China Welding, 2019, 28(4): 22 − 27.
    [6]
    Fu Y L, Guo N, Cheng Q, et al. Underwater laser welding for 304 stainless steel with filler wire[J]. Journal of Materials Research and Technology, 2020, 9(6): 15648 − 15661. doi: 10.1016/j.jmrt.2020.11.029
    [7]
    Liao H P, Li X Y, Chi P, et al. Effect mechanism of arc oscillation on microstructure and mechanical performance of SUS304 weld seams manufactured by local dry underwater double pulsed MIG welding[J]. Materials Science and Engineering, 2023, 887: 145752. doi: 10.1016/j.msea.2023.145752
    [8]
    Guo N, Fu Y L, Xing X, et al. Underwater local dry cavity laser welding of 304 stainless steel[J]. Journal of Materials Processing Technology, 2018, 260: 146 − 155. doi: 10.1016/j.jmatprotec.2018.05.025
    [9]
    Han L G, Wu X, Chen G D, et al. Local dry underwater welding of 304 stainless steel based on a microdrain cover[J]. Journal of Materials Processing Technology, 2019, 268: 47 − 53. doi: 10.1016/j.jmatprotec.2018.12.029
    [10]
    任伟, 吴冰洁, 邱阳, 等. 控氮304不锈钢热变形过程中的动态再结晶行为研究[J]. 西安交通大学学报, 2021, 55(3): 145 − 154.

    Ren Wei, Wu Bingjie, Qiu Yang, et al. Dynamic recrystallization behavior of nitrogen-controlled 304 stainless steel in hot deformation[J]. Journal of Xi'an Jiaotong University, 2021, 55(3): 145 − 154.
  • Related Articles

    [1]LU Yi, HE Xiaocong, XING Baoying, ZHANG Xianlian. Effect of annealing treatment on the fatigue behavior of titanium alloy self-piecing riveted joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(3): 124-128. DOI: 10.12073/j.hjxb.2018380083
    [2]CHEN Zhongyi, QIAO Weichao, MA Yonglin, XING Shuqing. Finite element analysis on master cylinder welding stress field of 80,000 tons of die forging press[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(5): 1-6. DOI: 10.12073/j.hjxb.20170501
    [3]YU Huiping, YUAN Yue, HAN Changlu, LI Xiaoyang. Analysis of test about residual stress of super steel spot welding under different process[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(9): 35-38.
    [4]DING Sansan, LI Qiang, GOU Guoqing. Effect of residual stress on fatigue behavior of welded joint of A7N01 aluminum alloy for high-speed trcion[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(9): 23-28.
    [5]ZHAO Lun, HE Xiaocong, ZHANG Xianlian. Fretting wear mechanism and fatigue behavior of titanium alloy self-piercing riveted joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(7): 88-92.
    [6]XUE Bin, ZHANG Tianhui, XU Renping, WANG Shiyue. Effect of residual compressive stress field on fatigue crack growth of B780CF steel welded joints[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(6): 103-108.
    [7]ZHU Xiaogang, WANG Lianfeng, QIAO Fengbin, GUO Lijie. Fatigue failure analysis of 6061-T6 aluminum alloy refilled friction stir spot welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2014, 35(4): 91-94.
    [8]WU Liangchen, WANG Dongpo, WANG Sheng, DENG Caiyan. Fatigue behavior of welded joints under combined cycle fatigue with ultrasonic component[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (5): 9-12.
    [9]XU Wei, LIU Xuesong, FANG Hongyuan, XU Wenli, YANG Jianguo. Feasibility of controlling welding residual stress and distortion with tailing electromagnetic force[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (8): 65-68.
    [10]Gao Jiming, Huang Yuhua, Liu Romgxuan, Chen Jiaquan. Fatigue Crack Growth Rate in Weld Metal of Steel HQ-60 Under High Stress Ratio[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 1995, (4): 190-195.
  • Cited by

    Periodical cited type(3)

    1. 陈文斌. 铝钢搅拌摩擦焊接头显微组织及性能研究. 农机使用与维修. 2025(04): 21-24 .
    2. 湛利华,朱喜霖,杨有良,汤智茂. 2219铝合金搅拌摩擦焊接头的蠕变时效行为研究. 精密成形工程. 2024(07): 48-56 .
    3. 周进鹏,马杰,陆晓峰,朱晓磊,王健. 喷雾辅助FSW焊接RAFM钢数值模拟与性能. 焊接学报. 2022(09): 104-112+120 . 本站查看

    Other cited types(1)

Catalog

    Article views (179) PDF downloads (40) Cited by(4)

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return