In order to explore the way to reduce energy threshold in X-shape welding formation of TC4 sheet, the influence of surfactant type, coating thickness and coating position on back reflection induced synergistic laser welding was systematically analyzed in this paper. The results show that the effect of different kinds of surfactant were different. Among them, coating NaCl and NaF is conducive to the formation of back reflection plume effects, while coating TiO2 has some weak effect. At the same time, the back reflection plume effect was further enhanced the increase of the surfactant coating thickness NaF was more sensitive to the coating thickness than NaCl. In addition, there is little effect when coating surfactant on the back of weld. It is concluded that the effect of surfactant on the back reflection induced synergistic laser welding of TC4 sheet is mainly due to the gain of laser energy absorption.
WANG Hongyu
,
DING Rui
,
CHAO Shuan
,
LI Le
. Effect of surfactant on TC4 sheet with back reflection induced synergistic laser welding[J]. Transactions of The China Welding Institution, 2019
, 40(2)
: 73
-76
.
DOI: 10.12073/j.hjxb.2019400045
[1] 国家自然科学基金委员会. 机械工程学科发展战略报告(2011-2020)[M]. 北京:科学出版社, 2010.
[2] 程东海, 黄继华, 林海凡, 等. TC4钛合金激光拼焊接头显微组织及力学性能分析[J]. 焊接学报, 2009, 30(2):103-106 Cheng Donghai, Huang Jihua, Lin Haifan, et al. Microstructure and mechanical analysis of Ti-6Al-4V laser butt weld joint[J]. Transactions of the China Welding Institution, 2009, 30(2):103-106
[3] Gao X L, Zhang L J, Liu J, et al. A comparative study of pulsed Nd:YAG laser welding and TIG welding of thin Ti6Al4V titanium alloy plate[J]. Materials Science & Engineering A, 2013, 259:14-21.
[4] Peter S, Rudolf W, Thomas G, et al. Utilizing laser power modulation to investigate the transition from heat-conduction to deep-penetration welding[J]. Physics Procedia, 2011, 12:224-231.
[5] 陈俐, 胡伦骥, 巩水利. 薄板钛合金激光焊熔透稳定性临界条件的计算[J]. 焊接学报, 2005, 26(11):35-38 Chen Li, Hu Lunji, Gong Shuili. Mathematical model of the stable full penetration laser welding for titanium alloy sheet[J]. Transactions of the China Welding Institution, 2005, 26(11):35-38
[6] 董丽娜, 张建勋. Ti6Al4V激光焊接接头非均匀梯度特征研究现状[J]. 稀有金属材料与工程, 2013, 42(3):655-660 Dong Lina, Zhang Jianxun. Research status of heterogeneous gradient feature for laser welded joint of Ti6Al4V alloy[J]. Rare Metal Materials and Engineering, 2013, 42(3):655-660
[7] 孙昊, 张兆栋, 刘黎明. 镁合金的低功率激光活性焊[J]. 焊接学报, 2007, 28(4):49-52, 57 Sun Hao, Zhang Zhaodong, Liu Liming. Low power laser welding of magnesium alloy with activating flux[J]. Transactions of the China Welding Institution, 2007, 28(4):49-52, 57
[8] 王宏宇. 实现金属薄板单面焊接双面成形的高效激光深熔焊方法:中国, 201410225961.2[P]. 2014-05-26.
