CAJ | 학술논문

为了探索采用热丝TIG堆焊方法在X65钢管内壁堆焊Incoloy825的焊接工艺，系统地研究并分析了焊接过程中所产生的弧坑、下淌、氧化、钨极烧损、钨极粘有异物、焊丝指向性不好、熔池边缘有红色氧化物等堆焊过程所产生的问题。研究结果表明，钨极角度和氩气流量均不能过多，否则焊接过程中会卷入空气，导致焊缝氧化；送丝管的清理以及送丝位置对焊缝成形有较大影响；另外，由于焊接过程中的热积累效应会使焊道氧化，严重时会影响焊缝成形。
위료탐색채용열사TIG퇴한방법재X65강관내벽퇴한Incoloy825적한접공예，계통지연구병분석료한접과정중소산생적호갱、하창、양화、오겁소손、오겁점유이물、한사지향성불호、용지변연유홍색양화물등퇴한과정소산생적문제。연구결과표명，오겁각도화아기류량균불능과다，부칙한접과정중회권입공기，도치한봉양화；송사관적청리이급송사위치대한봉성형유교대영향；령외，유우한접과정중적열적루효응회사한도양화，엄중시회영향한봉성형。
In order to explore welding technology of adopting hot wire TIG surfacing to conduct Incoloy825 surfacing in X65 grade steel pipe inner wall, it systematically researched and analyzed some problems occurred in surfacing process, such as crater, drip, oxidation, tungsten electrode burning, tungsten electrode with foreign body, welding wire directivity is bad, red oxide exist in molten pool edge and so on. The results indicated that the angle of tungsten electrode and argon gas flow are not too much, otherwise the weld will be oxidized by involved in air oxidation during welding process; wire feeding tube cleaning and wire feeding position greatly affect weld forming. In addition, the heat accumulation effect can make weld pass oxidation during welding process, it will affect weld forming in severe case.