冷丝辅助旋转/摇动电弧窄间隙MAG焊缝成形特性及接头组织性能演变机制
Weld Formation Characteristics and the Evolution Mechanisms of Joint Microstructure and Mechanical Properties for Rotating/Swing Arc Narrow Gap MAG Welding Assisted by Cold Wire
冷丝辅助旋转/摇动电弧窄间隙MAG焊缝成形特性及接头组织性能演变机制 |
| 李红, 姜玉清, 曹玉鹏, 王加友, 刘澍彬 |
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Weld Formation Characteristics and the Evolution Mechanisms of Joint Microstructure and Mechanical Properties for Rotating/Swing Arc Narrow Gap MAG Welding Assisted by Cold Wire |
| LI Hong, JIANG Yuqing, CAO Yupeng, WANG Jiayou, LIU Shubin |
| 图3 冷丝辅助摇动/旋转电弧运动轨迹 |
| Fig.3 Motion trajectories of the swing (a) and rotating (b) arc assisted by cold wire (ti -tj —the moving track of arc swing from the left to right sidewalls, tk -tl —the moving track of arc swing from the right to left sidewalls, tl -tm and tj -tk —the motion paths while the arc stays respectively at the left and right sidewalls; epi, epj, and epk —extreme positions of the arc close to the right sidewall; ci, cj, ck and cl —start/end points for the three cycles of the arc rotation; cpi, cpj, and cpk —path intersections between adjacent arc rotation cycles; δ—arc reheating interval; vr—instantaneous velocity of the arc relative to the groove) |
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