电焊机2025，Vol.55Issue(3)：65-71,7.DOI:10.7512/j.issn.1001-2303.2025.03.08
高速列车铝合金车体焊接变形的多维度协同控制
Multidimensional Coordinated Control of Welding Deformation Control of Aluminum Alloy Carbody for High-Speed EMUs
耿明 1孙明双 1安志飞 1范明保1
作者信息
- 1. 中车长春轨道客车股份有限公司,吉林 长春 130062
- 折叠
摘要
Abstract
Due to the large amount of welding and high coefficient of thermal expansion,the aluminum alloy carbody of high-speed trains is prone to significant welding deformation.Traditional adjustment methods are difficult to correct,se-verely affecting manufacturing precision and efficiency.Taking the Fuxing Hao intelligent EMU carbody as the research ob-ject,through analyzing the deformation mechanism of key dimensions of the whole vehicle,a multidimensional coordinated control strategy is proposed:for the contour deformation of the carbody,optimize the combination of sidewall and roof anti-deformation amount(width direction+4～+6 mm,height direction+5～+7 mm);for the deflection deformation,adopt the equal anti-deformation presetting of the underframe and sidewall(+8mm);combined with the optimization of internal posi-tioning tooling and adjustment of symmetrical welding sequence,achieve active control of welding deformation.Tests show that this method can effectively suppress the bending and contour deformation of the carbody,significantly improve the sta-bility of key dimensions after welding,and greatly reduce the adjustment workload.The research results provide a reusable process scheme for the high-precision welding of high-speed train aluminum alloy carbody.关键词
高速列车/铝合金车体/焊接变形控制/反变形优化/工装设计Key words
high-speed EMU/aluminum alloy carbody/welding deformation control/anti-deformation optimization/fixture design分类
金属材料引用本文复制引用
耿明,孙明双,安志飞,范明保..高速列车铝合金车体焊接变形的多维度协同控制[J].电焊机,2025,55(3):65-71,7.
