电焊机2026，Vol.56Issue(9)：1-9,65,10.DOI:10.7512/j.issn.1001-2303.2026.09.01
激光-KTIG复合焊接工艺下的匙孔行为研究与工艺特点
Study of Keyhole Behavior and Process Characteristics in Laser-KTIG Hybrid Welding
闫瑞志 1杜德志 1李柱良 1孙润生 1白宇鹏 1李金龙1
作者信息
- 1. 山东奥太电气有限公司,山东 济南 250014
- 折叠
摘要
Abstract
To broaden the process window and improve arc stability of KTIG welding,laser-KTIG hybrid welding was em-ployed to carry out butt-welding experiments on Q235 carbon steel and 304L stainless steel.The influences of laser irradia-tion position,welding speed and laser power on process stability and weld formation of hybrid welding were investigated.An in-situ X-ray transmission imaging system was utilized to acquire real-time images of keyhole initiation and evolution during hybrid welding and single KTIG welding.The results reveal that the arc-penetration mode is generated when the laser irradiates the front wall of the keyhole,while the laser-penetration mode forms as the laser irradiates the rear wall of the key-hole.Under the arc-penetration mode,welding stability and arc morphology are predominantly governed by welding speed and laser power.For keyhole generation and evolution,laser irradiation modifies the arc ignition position and arc stiffness,resulting in keyhole deflection whose magnitude depends on welding speed and laser power.Appropriate parameter configu-ration can achieve a vertical keyhole geometry,which mitigates the susceptibility to process-related porosity.关键词
KTIG/匙孔/电弧形态/X射线衍射原位/复合焊接Key words
KTIG/keyhole/arc morphology/in-situ X-ray diffraction/hybrid welding分类
矿业与冶金引用本文复制引用
闫瑞志,杜德志,李柱良,孙润生,白宇鹏,李金龙..激光-KTIG复合焊接工艺下的匙孔行为研究与工艺特点[J].电焊机,2026,56(9):1-9,65,10.
