摘要
激光电弧复合焊工艺具有熔透性好、焊接热输入小、变形易控制等优点,其在轨道客车转向架中厚板焊接中的应用解决了传统MAG焊接存在的一些不足。结合轨道客车转向架横梁钢管产品的结构特点,分析转向架横梁钢管激光电弧复合焊焊缝射线检测工艺难点,采用微焦点棒阳极技术对转向架横梁钢管激光电弧复合焊环焊缝进行周向曝光检测并在试验中得到了验证。结果表明,该技术可以准确地检测出焊缝内部各种缺陷,并找出影响激光电弧复合焊焊接质量的主要因素是离焦量,研究了微焦点棒阳极射线检测自动化检测技术在转向架横梁钢管中厚板焊缝检测方面的应用,实现了该焊缝的全覆盖,保证了焊缝质量。
Laser arc hybrid welding technology is one of the new technologies vigorously researched and promoted by various industries in recent years.It has a good application prospect with good penetration,small welding heat input,easy control deformation,and has been applied in many fields.The application of laser arc hybrid welding in the medium heavy plate of railway vehicle bogie solves some shortcomings of traditional MAG welding.Combining the structural charac-teristics of the steel tube products for railway bogie beam,the difficulties in radiographic inspection of laser arc hybrid weld of bogie beam steel tube analyzed and solved,the microfocus rod anode technology is used to carry out circumferential exposure detection for laser arc hybrid welding girth weld of steel tube for bogie beam,and it is verified in the actual test,all kinds of defects in the weld can be detected accurately,the main factors affecting the welding quality of laser arc hybrid welding are found.The application of microfocus rod anode automatic radiographic testing technology in the weld inspection of medium heavy plate of bogie steel tube is studied,full coverage of weld is realized and the quality of weld is guaranteed.
作者
田勐
张勇
王丽萍
李凯
郭立明
孙明辉
孟庆顺
吕健玮
TIAN Meng;ZHANG Yong;WANG Liping;LI Kai;GUO Liming;SUN Minghui;MENG Qingshun;LV Jianwei(RRC Changchun Railway Vehicles Co.,Ltd.,Changchun 130062,China)
出处
《电焊机》
2021年第6期68-71,I0006,共5页
Electric Welding Machine
关键词
激光电弧复合焊
微焦点棒阳极
横梁钢管
环焊缝
射线检测
laser arc hybrid welding
microfocus rod anode
beam steel tube
girth weld
radiographic testing
