摘要
利用超声临界振折射纵波法,通过对城际列车铝合金车体侧墙可能产生鼓包(或凹陷)的部位,在不同生产制造工序下(包括原材料、原材料预组装、侧墙组焊后、大部件调修后、总成焊接、总成焊后调修)残余应力的快速测试,获得大部件在不同生产工序过程下的残余应力的大小和分布规律,以及相同区域残余应力随工序变化的规律,分析铝合金侧墙大部件鼓包(或凹陷)的原因及影响因素,并提出相应的改进措施,为提高铝合金车体生产制造的质量提供参考,以及为后续研究残余应力对车体结构安全可靠性的影响提供基础数据支撑。
Using the ultrasonic critical vibration refraction longitudinal wave method,through the rapid test of the residual stress in the parts of the side wall of the aluminum alloy car body of the intercity train that may have bulges(or depressions)under different production and manufacturing processes(including raw materials,raw material pre assembly,side wall assembly welding,large parts after repair,assembly welding,assembly welding after base note repair),the size and distribution of the residual stress of large parts under different production processes,as well as the rule of the residual stress in the same area changing with the process,the causes and influencing factors of the bulges(or depressions)of large parts of the aluminum alloy side wall are analyzed,and the corresponding improvement measures are proposed to provide a reference for improving the production and manufacturing quality of the aluminum alloy car body and provide basic data support for the subsequent study of the impact of residual stress on the safety and reliability of the car body structure.
作者
张可可
Zhang Ke-ke(CRRC Guangdong Rail Transit Vehicle Co.,Ltd.,Guangdong Jiangmen 529100)
出处
《内燃机与配件》
2026年第3期26-28,共3页
Internal Combustion Engine & Parts
关键词
超声波
高速列车
铝合金车体
残余应力
Ultrasound
High speed train
Aluminum alloy vehicle body
Residual stress
