机械工程学报 >

2017 , Vol. 53 >Issue 22: 87 - 94

DOI: https://doi.org/10.3901/JME.2017.22.087

材料科学与工程

保护气体对高氮钢焊接熔滴过渡模式和气孔缺陷的影响研究

  • 崔博 ,
  • 张宏 ,
  • 刘佳 ,
  • 刘凤德 ,
  • 张福隆
展开
  • 1. 长春理工大学机电工程学院 长春 130022;
    2. 北华大学汽车与建筑工程学院 吉林 132013;
    3. 长春理工大学激光加工吉林省高等学校工程研究中心 长春 130022;
    4. 长春理工大学国家国际科技合作基地(光学) 长春 130022
崔博,男,1988年出生,博士研究生。主要研究方向为激光加工技术。E-mail:db0425@126.com;刘佳,男,1983年出生,博士,副教授,硕士研究生导师。主要研究方向为激光加工技术。E-mail:liujia@cust.edu.cn

收稿日期: 2017-03-13

  修回日期: 2017-09-12

  网络出版日期: 2017-11-20

收起

Study on the Impact of the Shielding Gas on the Droplet Transfer Mode and Blowhole Defect of High Nitrogen Steel Welding

  • CUI Bo ,
  • ZHANG Hong ,
  • LIU Jia ,
  • LIU Fengde ,
  • ZHANG Fulong
Expand
  • 1. College of Mechanical and Electric Engineering, Changchun University of Science and Technology, Changchun 130022;
    2. College of Automible and Civil Engineering, Beihua University, Jilin 132013;
    3. Engineering Research Center of Laser Processing for Universities of Jilin Province, Changchun University of Science and Technology, Changchun 130022;
    4. National Base of International Science and Technology Cooperation in Optics, Changchun University of Science and Technology, Changchun 130022

Received date: 2017-03-13

  Revised date: 2017-09-12

  Online published: 2017-11-20

Fold

摘要

采用激光-电弧复合热源对8 mm厚的高氮钢板进行焊接试验，研究不同保护气体组成对焊缝形貌、熔滴过渡特征和气孔缺陷的影响。结果表明，采用纯氩做保护气体时，熔滴过渡模式以射流过渡为主，并伴有少量排斥过渡；保护气体成分为Ar+N2混合气体时，熔滴过渡模式为短路过渡；保护气体成分为Ar+N2+O2混合气体时，熔滴过渡模式为射流过渡。保护气体的组成对焊缝气孔缺陷也存在一定的影响，保护气体为纯氩时，焊缝气孔率最大，其值为2.52%；保护气体为90% Ar+10% N2时，气孔率最低，仅为0.16%；Ar+N2中添加1%的O2后，气孔率略有升高，但与纯氩时相比，气孔率仍下降明显。采用Ar+N2+O2三元混合气作为保护气体时，能够有效抑制焊缝内气孔数量，同时可以改善熔滴过渡模式，提高焊接过程稳定性。

关键词： 复合焊接; 高氮钢; 保护气体; 焊接气孔; 熔滴过渡

本文引用格式

崔博 , 张宏 , 刘佳 , 刘凤德 , 张福隆 . 保护气体对高氮钢焊接熔滴过渡模式和气孔缺陷的影响研究[J]. 机械工程学报, 2017 , 53(22) : 87 -94 . DOI: 10.3901/JME.2017.22.087

Abstract

High-nitrogen steel plates with a thickness of 8 mm are welded with a laser-arc composite heat source for experiment to study the impact of different shielding gas compositions on the welding joint profile, droplet transfer features and blowhole defect. The results show that when the pure argon is used as the shielding gas, the droplet transfer mode is mainly shown as spray transfer, accompanied by a small amount of repulsion transfer. When the shielding gas is mixed by Ar+N2, the droplet transfer mode is short circuiting transfer; when the shielding gas is mixed by Ar+N2+O2, the droplet transfer mode is spray transfer. The shielding gas composition has some impact on the blowhole defect of the welding joint. When the shielding gas is pure argon, the blowhole defect rate of the welding joint is at its maximum and its value is 2.52%. When the shielding gas is 90% Ar+10% N2, the blowhole defect rate is the lowest, only 0.16%; when 1% of the O2 is added to the mixture of Ar+N2, the blowhole defect rate slightly rises, but compared with that of pure argon, the blowhole defect rate still drops significantly. When the ternary mixture of Ar+N2+O2 is used as the shielding gas, the number of blowholes in the welding joint can be effectively contained, and the droplet transfer mode can be improved to better the stability of the welding process.

Key words： hybrid welding; high nitrogen steels; shielding gas; welding porosity; droplet transfer

参考文献

[1] HANS B. Manufacture and application of high nitrogen steels[J]. The Iron and Steel Institute of Japan,1996,36(7):909-914.
[2] 李冬杰,陆善平,李殿中,等. 高氮钢焊缝的组织和冲击性能研究[J]. 金属学报,2013,49(2):129-136. LI Dongjie,LU Shanping,LI Dianzhong,et al. Investigation of the microstructure and impact properties of the high nitrogen stainless steel weld[J]. Acta Metallurgica Sinica,2013,49(2):129-136.
[3] YUJI I,RIKIO N. Effect of thermo-mechanical treatment on mechanical properties of high-nitrogen containing Cr-Mn-Ni austenitic stainless steels[J]. The Iron and Steel Institute of Japan,1996,36(7):855-861.
[4] NAT M. Nitrogen containing austenitic stainless steels[J]. Materialwissenschaft Und Werkstofftechnik,2006,37(10):875-880.
[5] LANG Yuping,QU Huapeng,CHEN Haitao,et al. Research progress and development tendency of nitrogen-alloyed austentic stainless steel[J]. Journal of Iron and Steel Research,2015,22(2):91-98.
[6] STEIN G,HUCKLENBROICH I. Manufacturing and applications of high nitrogen steels[J]. Materials and Manufacturing Processes,2004,19(1):7-17.
[7] HERTZMAN S,WESSMAN S. An experimental and theoretical study of nitrogen flux in stainless steel TIG welds[J]. Materials Science Forum,1999,318-320:579-590.
[8] RAFFI M,MADHUSUDHAN R G,SRINIVASA R K. Microstructure and pitting corrosion of shielded metal arc welded high nitrogen stainless steel[J]. Defence Technology,2015,11(3):237-243.
[9] WOO I,KIKUCHI Y. Weldability of high nitrogen stainless steel[J]. Transactions of JWRI,2002,31(2):129-139.
[10] LI H B,JIANG Z H,FENG H,et al. Microstructure,mechanical and corrosion properties of friction stir welded high nitrogen nickel-free austenitic stainless steel[J]. Materials and Design,2015,84:291-299.
[11] KAMIYA O,CHEN Z W,KIKUCHI Y. Micro-porosity formation in partially melted zone during welding of high nitrogen austenitic stainless steels[J]. Journal of Materials Science,2002,37(12):2475-2481.
[12] GALLOWAY A M,MCPHERSON N A,BAKER T N. An evaluation of weld metal nitrogen retention and properties in 316LN austenitic stainless steel[J]. Proceedings of the Institution of Mechanical Engineers,Part L:Journal of Materials Design and Applications,2011,225(2):61-69.
[13] 赵琳,田志凌,彭云,等. 1Cr22Mn16N高氮钢激光焊接I.焊接保护气体组成和热输入对焊缝氮含量及气孔性的影响[J]. 焊接学报,2007,28(8):89-91,95. ZHAO Lin,TIAN Zhiling,PENG Yun,et al. Laser welding of high nitrogen steel 1Cr22Mn16N Ⅰ. Influence of shielding gas composition and heat input on N2 content and porosity of weld metal[J]. Transactions of the China Welding Institution,2007,28(8):89-91.
[14] HARZENMOSER M,RENNHARD C,HERETH M,et al. Recent developments on the weldability of a new high nitrogen stainless steel[J]. Materials Science Forum,1999,318(3):591-596.
[15] MIYANO Y,FUJⅡ H,SUN Yufeng,et al. Mechanical properties of friction stir butt welds of high nitrogen-containing austenitic stainless steel[J]. Materials Science and Engineering A,2011,528(6):2917-2921.
[16] 李陈宾,史吉鹏,刘黎明. 低功率脉冲激光-电弧复合热源高效焊接过程中的"匙孔"行为研究[J]. 机械工程学报,2016,52(2):41-46. LI Chenbin,SHI Jipeng,LIU Liming. Study on laser keyhole behavior in high-efficiency low power pulsed laser-TIG hybrid welding process[J]. Journal of Mechanical Engineering,2016,52(2):41-46.
[17] 刘凤德,张宏,杜劭峰,等. 激光功率对CO2激光-MAG电弧复合焊电弧与熔滴行为的影响[J]. 机械工程学报,2013,49(4):75-82. LIU Fengde,ZHANG Hong,DU Shaofeng,et al. Influence of laser power on arc and droplet behaviors in droplets on CO2 laser-MAG arc hybrid welding[J]. Journal of Mechanical Engineering,2013,49(4):75-82.
[18] 孙硕,刘双宇,贾冬生,等. 高氮钢激光-电弧复合焊焊缝成形多元非线性回归模型[J]. 机械工程学报,2015,51(8):67-75. SUN Shuo,LIU Shuangyu,JIA Dongsheng,et al. Multiple nonlinear regression model of weld bead shape for high nitrogen steel by laser-arc hybrid welding[J]. Journal of Mechanical Engineering,2015,51(8):67-75.
[19] 王立锋,刘凤德,刘薇娜,等. 高氮钢激光-电弧复合焊接气孔控制方法研究[J]. 机械工程学报,2016,52(20):51-59. WANG Lifeng,LIU Fengde,LIU Weina,et al. Study on control methods of welding porosity in laser-arc hybrid welding for high nitrogen steels[J]. Journal of Mechanical Engineering,2016,52(20):51-59.
[20] LU S P,FUJJI H,NOGI K,et al. Effect of oxygen content in He-O2 shielding gas on weld shape in ultra-deep penetration TIG[J]. Science and Technology of Welding and Joining,2013,12(8):689-695.
[21] 周业基. 焊接保护气体选择[J]. 广船科技,2000(3):20-24. ZHOU Yeji. The selection of shielding gas[J]. GSI Shipbuilding Technology,2000(3):20-24.
[22] LU S P,FUJJI H,NOGI K. Sensitivity of marangoni convection and weld shape variations to welding parameters in O2-Ar shielded GTA welding[J]. Scripta Materialia,2004,51(3):271-277.
[23] LU S P,FUJJI H,NOGI K. Marangoni convection and weld shape variations in Ar-O2 and Ar-CO2 shielded GTA welding[J]. Materials Science and Engineering A,2004,380(1-2):290-297.
[24] TUSEK J,SUBAN M. Experimental research of the effect of hydrogen in argon as a shielding gas in arc welding of high-alloy stainless steel[J]. Int. J. Hydrogen Energy,2000,25(4):369-376.
[25] HOWARD B C,SCOTT C H. Modern welding technology[M]. New Jersey:Pearson Education,2005.
[26] HERTZMAN S,PARRERSON R J,BLOM R,et al. Influence of shielding gas composition and welding parameters on the N-content and corrosion properties of welds in N-alloyed stainless Steel[J]. ISIJ International,1996,36(7):968-976.
Options
文章导航

/

〈 〉

版权所有 © 《机械工程学报》编辑部

技术支持：北京玛格泰克科技发展有限公司