A review on fast-frequency pulse TIG welding technology. (2nd September 2022)

• Record Type: Journal Article
• Authors: Wang, Zhenmin; Lu, Ge; Hu, Chunming; Lin, Sanbao; Ren, Xianghui; Wu, Jianwen; Tian, Jiyu
• Is Part Of: Welding international. Volume 36:Number 9(2022)
• Page Start: 510
• Page End: 521
• Publication Date: 2022-09-02
• Subjects: FFP-TIG welding -- waveform modulation -- arc characteristics -- weld performance; Welding -- Periodicals; Welding -- Automation -- Periodicals; 671.52
• DOI: 10.1080/09507116.2022.2109448
• Languages: English
• ISSNs: 0950-7116

Abstract

Abstract: With the development of pulse TIG welding technology, the fast-frequency pulse TIG (FFP-TIG) welding technology using 20 kHz ultra-high frequency (UHF) pulse modulation current with obvious high-frequency shrinkage effect and electromagnetic stirring effect has been gradually improved. FFP-TIG welding overcomes many shortcomings of traditional pulse TIG welding, such as shallow penetration, unconcentrated current energy, large heat-affected zone, and many welding defects. At present, FFP-TIG welding has become the preferred method of metal connection in high-end manufacturing process, with broad prospects for development and application. Firstly, this study clarifies the working principle and arc characteristics of FFP-TIG welding, and reveals the advantages of FFP-TIG welding compared with ordinary pulse TIG welding; Secondly, the research status of FFP-TIG welding power supply and welding process at home and abroad is reviewed; Finally, the process characteristics of FFP-TIG welding are summarized, and its developing trend in industrial field is prospected.