The three-dimensional finite element model of 304 stainless steel T-joint was established to study the influence of welding sequence on thermal deformation and residual stress of T-joint during laser-arc hybrid welding. A composite heat source model combining Gaussian surface heat source and 3D Gaussian body heat source was used to simulate the laser and arc hybrid heat sources. The reliability of numerical simulation was verified by laser-arc hybrid build up welding test of 304 stainless steel. Numerical simulation results of weld section pool morphology are in good agreement with the actual welding experimental results, which indicates that the established heat source model can effectively simulate the coupling effect of laser-arc hybrid heat sources. The temperature field, residual stress and thermal deformation of 304 stainless steel T-joint under different welding sequence were analyzed. Experimental results show that the welding sequence has influence on the residual stress and thermal deformation of T-joint in laser-arc hybrid welding. In comparison of the residual stress and thermal deformation under different welding sequences, it is found that the sequential welding can effectively reduce the welding residual stress, and the thermal deformation of simultaneous reverse welding is minimum. Comprehensive analysis shows that the effect of sequence reverse welding for 304 stainless steel T-joint is the best.
GUI Xiaoyan
,
ZHANG Yanxi
,
YOU Deyong
,
GAO Xiangdong
. Numerical simulation and test for influence of laser arc hybrid welding sequence on 304 stainless steel T-joint[J]. Transactions of The China Welding Institution, 2021
, 42(12)
: 34
-39
.
DOI: 10.12073/j.hjxb.20210324005
[1] Han T, Gu S W, Xu L, et al. Study on stress and deformation of keyhole gas tungsten arc-welded joints[J]. China Welding, 2020, 29(1): 21 ? 29.
[2] 许欣欣, 梁晓光, 杨瑞生, 等. 焊接残余应力对2219铝合金熔焊接头承载能力的影响[J]. 焊接学报, 2020, 41(10): 17 ? 22
Xu Xinxin, Liang Xiaoguang, Yang Ruisheng, et al. Effect of welding residual stress on bearing capacity of fusion welded joint of 2219 aluminum alloy[J]. Transactions of the China Welding Institution, 2020, 41(10): 17 ? 22
[3] Liu F Y, Tan C W, Gong X T, et al. A comparative study on microstructure and mechanical properties of HG785D steel joint produced by hybrid laser-MAG welding and laser welding[J]. Optics and Laser Technology, 2020, 128: 106247.
[4] Mondal A K, Biswas P, Bag S. Prediction of welding sequence induced thermal history and residual stresses and their effect on welding distortion[J]. Welding in the World, 2017, 61(4): 711 ? 721.
[5] Shadkam S, Ranjbarnodeh E, Iranmanesh M. Effect of sequence and stiffener shape on welding distortion of stiffened panel[J]. Journal of Constructional Steel Research, 2018, 149: 41 ? 52.
[6] Chen Z, Chen Z C, Shenoi R A. Influence of welding sequence on welding deformation and residual stress of a stiffened plate structure-science direct[J]. Ocean Engineering, 2015, 106: 271 ? 280.
[7] Han S, Ahn J, Na S. A study on ray tracing method for CFD simulations of laser keyhole welding: progressive search method[J]. Welding in the World, 2016, 60(2): 247 ? 258.
[8] Liang W, Deng D. Influences of heat input, welding sequence and external restraint on twisting distortion in an asymmetrical curved stiffened panel[J]. Advances in Engineering Software, 2018, 115: 439 ? 451.
[9] Yi J, Zhang J M, Cao S F, et al. Effect of welding sequence on residual stress and deformation of 6061-T6 aluminium alloy automobile component[J]. Transactions of Nonferrous Metals Society of China, 2019, 29(2): 287 ? 295.
[10] Gao X D, Wang L, You D Y, et al. Synchronized monitoring of droplet transition and keyhole bottom in high power laser-mag hybrid welding process[J]. Sensors Journal, IEEE, 2019, 19(9): 3553 ? 3563.
[11] 严春妍, 易思, 张浩, 等. S355钢激光-MIG复合焊接头显微组织和残余应力[J]. 焊接学报, 2020, 41(6): 12 ? 18
Yan Chunyan, Yi Si, Zhang Hao, et al. Investigation of microstructure and stress in laser-MIG hybrid welded S355 steel plates[J]. Transactions of the China Welding Institution, 2020, 41(6): 12 ? 18
[12] Zhu Z W, Ma X Q, Wang C M, et al. Modification of droplet morphology and arc oscillation by magnetic field in laser-MIG hybrid welding[J]. Optics and Lasers in Engineering, 2020, 131: 106138.
[13] 吴向阳, 徐剑侠, 高学松, 等. 激光-MIG复合焊接热过程与熔池流场的数值分析[J]. 中国激光, 2019, 46(9): 91 ? 102
Wu Xiangyang, Xu Jianxia, Gao Xuesong, et al. Numerical simulation of thermal process and fluid flow field in Laser-MIG hybrid weld pools[J]. Chinese Journal of Lasers, 2019, 46(9): 91 ? 102
[14] Zhou S J, Bu H C, Gao Q Y, et al. Effect of power distribution on the temperature evolution in laser-MIG hybrid welding for Q235 steel[J]. Modern Physics Letters B, 2019(4): 1950405.
[15] Gao X D, Wang L, Chen Z Q, et al. Process stability analysis and weld formation evaluation during disk laser-mag hybrid welding[J]. Optics and Lasers in Engineering, 2020, 124(1): 105835.1 ? 105835.13.
[16] 高向东, 冯燕柱, 桂晓燕, 等. 激光入射角影响焊接熔池匙孔瞬态行为数值模拟[J]. 机械工程学报, 2020, 56(22): 82 ? 89
Gao Xiangdong, Feng Yanzhu, Gui Xiaoyan, et al. Numerical simulation of effects of laser incident angle on transient behaviors of molten pool and keyhole during laser welding[J]. Journal of Mechanical Engineering, 2020, 56(22): 82 ? 89
[17] Hou Z L, Liu L M, Lü X Z, et al. Numerical simulation for pulsed laser–gas tungsten arc hybrid welding of magnesium alloy[J]. Journal of Iron and Steel Research International, 2018, 25: 995 ? 1002.
[18] Zhan X H, Liu Y, Ou W M, et al. The numerical and experimental investigation of the multi-layer laser-MIG hybrid welding for Fe36Ni Invar alloy[J]. Journal of Materials Engineering and Performance, 2015, 24(12): 4948 ? 4957.
[19] Fu G, Lourenco M I, Duan M L, et al. Influence of the welding sequence on residual stress and distortion of fillet welded structures[J]. Marine Structures, 2016, 46: 30 ? 55.
