Analysis and Elimination of Residual Stress in Single Layer and Single Channel of Arc Fuse Accumulation
QUAN Guozheng1, SHI Ruiju1, LIU Qiao1, ZHAO Jiang1, ZHOU Jie1, WANG Yueqiao2
1 College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China 2 Erzhong (Deyang) Heavy Equipment Co., Ltd., Deyang 618000, China
Abstract: In this paper, the finite element software SYSWELD was used to establish the three-dimensional model of single-track surfacing, and the double-ellipsoid heat source was used to simulate the temperature field and stress field of the welding process. Then the effect of welding parameters on residual stress was investigated. The results show that using lower line energy heat input, low material accumulating rate and high preheating temperature can effectively reduce the residual stress in a certain range. Based on ABAQUS software, the residual stress of accumulation material is introduced into the hammering model. The simulation analysis shows that the material will return to elastic deformation and finally form plastic contact deformation when the material deformation reaches the maximum during the hammering process. After hammering, the resi-dual stress in weld and heat affected zone decreases greatly, and the residual tensile stress in a certain depth of hammering surface changes into compressive stress. The hammering test proves that the hammering method can effectively reduce the residual stress of accumulation material and transform the local residual tensile stress into compressive stress in a certain depth range.
权国政, 施瑞菊, 刘乔, 赵江, 周杰, 王月乔. 电弧熔丝单层单道积材残余应力模拟分析及锤击消除研究[J]. 材料导报, 2020, 34(14): 14154-14160.
QUAN Guozheng, SHI Ruiju, LIU Qiao, ZHAO Jiang, ZHOU Jie, WANG Yueqiao. Analysis and Elimination of Residual Stress in Single Layer and Single Channel of Arc Fuse Accumulation. Materials Reports, 2020, 34(14): 14154-14160.
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2020, Vol. 34 
