电阻点焊超声在线监测
Ultrasonic Online Monitoring of Resistance Spot Welding
- 2023年53卷第8期 页码:138-143
DOI: 10.7512/j.issn.1001-2303.2023.08.18
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刘春秘,张佳莹,陈一淳,等.电阻点焊超声在线监测[J].电焊机,2023,53(8):138-143.
LIU Chunmi, ZHANG Jiaying, CHEN Yichun, et al.Ultrasonic Online Monitoring of Resistance Spot Welding[J].Electric Welding Machine, 2023, 53(8): 138-143.
电阻点焊质量决定了车身强度和车辆安全。超声无损检测方法常用于焊后抽检,但车身焊装完成后,结构内部诸多焊点难以触及,无法检测。针对上述问题,将超声检测技术应用于焊接过程监测,基于脉冲-回波超声探头与特征信号分析技术,研究点焊过程工件内部超声场瞬态分布情况;设计了新型内置超声波探头电极结构,将超声探头嵌入电极动臂水冷腔,进行脉冲电阻点焊超声在线监测试验,分析超声时程、焊接过程超声回波特征;利用声学信号实时记录焊核熔化和凝固过程,并研究点焊典型焊接缺陷虚焊的超声回波图特征,分析基于回波的虚焊焊点鉴别方法。研究结果表明,通过观察C扫描图像特征与A扫描信号的变化,能够很好地划分点焊接头的热影响区、熔合区、熔核区以及焊接缺陷。通过C扫描图像特征对虚焊焊点进行快速识别,进而实现点焊缺陷检测和熔核尺寸测量。
The quality of spot welding determines the strength and safety of the vehicle body. Ultrasonic non-destructive testing methods are commonly used for spot inspection after welding. But many welding points of the structure are difficult to reach and cannot be detected when the welding is completed. In order to address the problem, ultrasonic testing technology is applied to the monitoring of welding process. Based on pulse-echo ultrasonic probe and characteristic signal analysis technology, the transient distribution of ultrasonic field inside the workpiece during spot welding process is studied. A new type of built-in ultrasonic probe electrode structure is designed. The ultrasonic probe is embedded in the water-cooled cavity of the electrode boom, and the ultrasonic on-line monitoring test of pulse resistance spot welding is carried out. The characteristics of ultrasonic time history and ultrasonic echo diagram during welding process are analyzed. The melting and solidification process of the nugget is recorded in real time by using acoustic signals, and the characteristics of the ultrasonic echo diagram of the virtual welding of the typical spot welding defects are studied, and the identification method of the virtual welding spot based on the echo diagram is analyzed. The results show that the heat affected zone, fusion zone, nugget zone and welding defects of spot welded joints can be well divided by observing the characteristics of C-scan images and A-scan signals. The virtual welding spot can be quickly identified by the characteristics of the display diagram, and then the spot welding defect detection and nugget size measurement can be realized.
超声无损检测电阻点焊焊核熔化过程监测
ultrasonic non-destructive testingresistance spot weldingwelding core meltingmonitoring
刘庆祝,王洪潇,赵国新. 激光搭接焊工艺与电阻点焊工艺在轨道车辆不锈钢车体中的对比分析[J]. 电焊机,2018,48(10):44-47.
LIU Q Z,WANG H X,ZHAO G X. Laser lap welding and resistance spot welding process analysis on railway passenger cars[J]. Electric Welding Machine,2018,48(10):44-47.
Li G H,Zhou L,Shu F Y, et al.Statistical and Metallurgical Analysis of Dissimilar Friction Stir Spot Welded Aluminum/Copper Metals[J]. Journal of Materials Engineering and Performance,2020,29(3):1830-1840.
赵新玉,刚铁,袁媛. 薄钢板点焊接头超声信号分析[J]. 焊接学报, 2005, 26(11):101-105.
ZHAO X Y, GANG T, YUAN Y. Ultrasonic signal analyses of spot welds in thin steel sheet.Transactions of the china welding institution[J]. Transactions of the China Welding Institution,2005,26(11):101-105.
周昕宇,张隽漪,刘祖国,等. 地铁车顶用SUS301L不锈钢激光焊接工艺参量优化[J]. 激光技术, 2021,45(5):590-595.
ZHOU X Y,ZHANG J Y,LIU Z Get al. Study on the parameter optimization of laser welding of SUS301L stainless steel for metro roof[J]. Laser Technology,2021,45(5):590-595.
夏裕俊,李永兵,楼铭,等.电阻点焊质量监控技术研究进展与分析[J]. 中国机械工程, 2020, 31(1):100-125.
XIA Y J,LING Y B,LOU M,et al.Recent Advances and Analysis of Quality Monitoring and Control Technologies for RSW[J]. China Mechanical Engineering,2020, 31(1):100-125. [6] 李东阳,邓黎鹏,胡德安,等. 基于阿里云的电阻点焊数据监测系统设计[J]. 电焊机,2022,52(2):78-83.
LI D Y, DENG L P, HU D A, et al. Design of Data Monitoring System for Resistance Spot Welding Based on Alibaba Cloud[J]. Electric Welding Machine,2022, 52(2): 78-83.
HUA L,WANG B,WANG X,et al. In-situ ultrasonic detection of resistance spot welding quality using embedded probe[J]. Mater. Process.Technol,2019(267):205-214. [8] 王春生,王洪潇,李英明,等. 不锈钢电阻点焊在线超声检测信号特征研究[J].电焊机,2021,51(9):68-74.
WANG C S, WANG H X, LI Y M, et al. Research on signal characteristics of online ultrasonic testing of stainless steel resistance spot welding[J]. Electric We-lding Machine, 2021, 51(9): 68-74. [9] 狄星.不锈钢电阻点焊在线超声波检测技术研究[D].吉林:吉林大学,2020.
DI X. Research on On-line Ultrasonic Detection Technology for Resistance Spot Welding of Stainless Steel[D]. Jilin:Jilin University, 2020.
史亦韦,郭淼,陈虹. 超声波衍射时差法检测的实验室能力认可[J]. 无损检测,2021, 43(9):52-57.
SHI Y W,GUO M,CHEN H,Laboratory accreditation for time of flight diffraction testing competence[J].NDT,2021, 43(9):52-57.
方乃文,王星星,徐锴,等. 保护气体对低镍不锈钢激光-电弧复合焊电弧特性及组织性能影响[J]. 稀有金属材料与工程,2022,51(08):3089-3094.
FANG N W,WANG X X,XU K,et al. Effect of Shielding Gas on Arc Characteristics and Microstructure and
Properties of Laser-Arc Hybrid Welding of Low Nickel
Stainless Steel[J]. Rare Metal Materials and Engineering,2022,51(08):3089-3094.
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