Regional characteristics of arc energy distribution  

作　　者：肖天骄 宋永伦 杨方田 

机构地区：[1]Xiao Tianjiao, Song Yonglun and Yang Fangtian, Institute of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, 100124

出　　处：《China Welding》2013年第2期1-5,共5页中国焊接（英文版）

基　　金：The work was supported by the National Natural Science Foundation of China （No. 51275009）.

摘　　要：The lamellar structure of tungsten inert gas （T1G） arc is distinct in that it reflects its inhomogeneous energy distribution. In terms of an arc＇ s physical properties, the lamellar structure may be divided into three regions ： the ionization region, the recombination region and gas fringes. A large gradient of electron density exists between regions ; this causes differences in the physical properties of an arc. In this study, the scale of ionizing regions in TIG arc is accurately determined with experimental conditions by a spectroscopic diagnostic method, which is also used to investigate the distribution of the electron density of the arc. More precise dimensions of arc energy distribution are described; the paper also discusses the difference with or without the influence of metal vapor from the weld pool.The lamellar structure of tungsten inert gas （T1G） arc is distinct in that it reflects its inhomogeneous energy distribution. In terms of an arc＇ s physical properties, the lamellar structure may be divided into three regions ： the ionization region, the recombination region and gas fringes. A large gradient of electron density exists between regions ; this causes differences in the physical properties of an arc. In this study, the scale of ionizing regions in TIG arc is accurately determined with experimental conditions by a spectroscopic diagnostic method, which is also used to investigate the distribution of the electron density of the arc. More precise dimensions of arc energy distribution are described; the paper also discusses the difference with or without the influence of metal vapor from the weld pool.

关 键 词：welding arc energy distribution spectroscopic diagnosis metal vapor 

分 类 号：O461.21[理学—电子物理学] TG403[理学—物理]