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

页码：485 / 495

页数：11

共 43 条

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