Characterization of welding arc and weld pool formation in vacuum gas hollow tungsten arc welding

被引：46
作者：
Cho, D. W. [1 ]
Lee, S. H. [2 ]
Na, S. J. [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Mech Engn, Taejon 305701, South Korea
[2] Samsung Heavy Ind Co, Welding Res Part, Keoje 656710, Gyeongsangnam D, South Korea
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2013年 / 213卷 / 02期
关键词：
Abel inversion; Arc heat flux distribution; Current density; Arc pressure; Weld pool simulation; Vacuum GHTAW; ANODE-BOUNDARY-LAYER; FLUID-FLOW; NUMERICAL-ANALYSIS; HEAT; PLASMA; PENETRATION; DIFFUSION; INVERSION; EMISSION; BEHAVIOR;
D O I：
10.1016/j.jmatprotec.2012.09.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An experimental method is suggested to obtain the effective arc radii for various welding conditions in vacuum gas hollow tungsten arc welding. The irradiance distribution of welding arc next above the anode workpiece is obtained by applying Abel inversion algorithm to the CCD arc image, and then used to determine the distribution of arc heat flux, arc pressure and current density from the physical relations of arc irradiance, temperature and current density in gas tungsten arc welding. The resultant arc models are then adopted to simulate the gas hollow tungsten arc welding process for various gas flow rates. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：143 / 152
页数：10
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