Bending deformation control in a laser-welded long straight structure by elastic pre-bending technique

被引：5
|
作者：
Dai, Peiyuan [1 ]
Mi, Dawei [2 ]
Guo, Baochao [2 ]
Yue, Xuelai [2 ]
Sun, Junhao [3 ]
Li, Zhuguo [3 ]
Deng, Dean [1 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Shanghai 1 Machine Tool Works Co Ltd, Shanghai 201308, Peoples R China
[3] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China
来源：
JOURNAL OF MANUFACTURING PROCESSES | 2023年 / 107卷
关键词：
Laser beam welding; Welding deformation; Elastic pre-bending; Welding simulation; WELDING RESIDUAL-STRESS; NUMERICAL-SIMULATION; ANGULAR DISTORTION; EXTERNAL RESTRAINT; GROOVE TYPE; STEEL; JOINT; TEMPERATURE; SEQUENCE; PREDICTION;
D O I：
10.1016/j.jmapro.2023.10.062
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Longitudinal bending deformation is the most typical mode of welding deformation in long-straight welded structures with asymmetric cross-sections. It is very critical for manufacturing accuracy to control the longitudinal bending deformation during the welding assembly stage. The objective of this study is to propose an elastic pre-bending technique to control the longitudinal bending deformation induced by welding heat input. Both numerical simulation technology and experimental method are employed to investigate the longitudinal bending deformation in a large-straight structure made of SUS304 stainless steel. In the current study, the effectiveness of the proposed elastic pre-bending method is verified by experiment. Simulation results show that the longitudinal bending deformation caused by welding could be reduced by >90 % by setting an appropriate value of prebending deformation. In addition, based on theoretical analysis and simulation results, the control mechanism of longitudinal bending deformation is clarified.
引用
收藏
页码：485 / 495
页数：11
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