冷丝辅助旋转<strong>/</strong>摇动电弧窄间隙<strong>MAG</strong>焊缝成形特性及接头组织性能演变机制

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

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8 冷丝辅助旋转/摇动电弧窄间隙MAG多层焊接头形貌(L₁~L₆分别表示第1至第6层焊缝)

Fig.8 Morphologies of rotating/swing arc narrow gap MAG multi-layer welding joint assisted by CW (WM_NRH3—non-reheated region of the 3rd-layer weld metal, RHAZ₄₃—reheated affected zone (in the 3rd-layer weld) induced by the 4th-layer weld, RHAZ₃₂—reheated affected zone (in the 2nd-layer weld) induced by the 3rd-layer weld; L₁-L₆ denote weld layers, and areas 1-3 indicate EBSD observing regions)
(a) rotating arc for single wire (RA) (b) RA + CW
(c) swing arc for single wire (SA) (d) SA + CW