Study on arc characteristics and behavior of metal transfer in pulse current flux-cored arc welding of mild steel  

作　　者：Zhang Shuai Cheng Fangjie Di Xinjie Wang Dongpo Cao Jun 张帅;程方杰;邸新杰;王东坡;曹军(Tianjin Key Laboratory of Advanced Joining Technology,Tianjin University;China National Petroleum Offshore Engineering CO.,LTD)

机构地区：[1]Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin, 300072 [2]China National Petroleum Offshore Engineering CO., LTD, Tianjin, 300452

出　　处：《China Welding》2016年第4期42-51,共10页中国焊接（英文版）

摘　　要：The variation in arc characteristics and behavior of metal transfer with the change in pulse parameters has been studied by high speed video camera during pulse current flux-cored arc weld deposition.A comparative study of similar nature has also been carried out during flux-cored arc weld deposition in globular and spray transfer modes.The effect of pulse parameters has been studied by considering their mean current and arc voltage.The arc characteristics studied by its root diameter,projected diameter and length,and the behavior of metal transfer noted by the metal transfer model and the droplet diameter have been found to vary significantly with the pulse parameters.The observation may help in understanding the arc characteristics with respect to the variation in pulse parameters which may be beneficial in using pulse current FCAW to produce desired weld quality.The variation in arc characteristics and behavior of metal transfer with the change in pulse parameters has been studied by high speed video camera during pulse current flux-cored arc weld deposition.A comparative study of similar nature has also been carried out during flux-cored arc weld deposition in globular and spray transfer modes.The effect of pulse parameters has been studied by considering their mean current and arc voltage.The arc characteristics studied by its root diameter,projected diameter and length,and the behavior of metal transfer noted by the metal transfer model and the droplet diameter have been found to vary significantly with the pulse parameters.The observation may help in understanding the arc characteristics with respect to the variation in pulse parameters which may be beneficial in using pulse current FCAW to produce desired weld quality.

关 键 词：flux-cored arc welding pulse current mild steel arc characteristics metal transfer the slag column welding spatter 

分 类 号：TG457.11[金属学及工艺—焊接]