Droplet formation, detachment, and impingement on the molten pool in gas metal arc welding

被引:65
作者
Fan, HG [1 ]
Kovacevic, R [1 ]
机构
[1] So Methodist Univ, Dept Mech Engn, Dallas, TX 75275 USA
来源
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 1999年 / 30卷 / 04期
基金
美国国家科学基金会;
关键词
D O I
10.1007/s11663-999-0041-6
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A mathematical model is developed to describe the globular transfer in gas metal are welding (GMAW). This work is both theoretical and experimental. Using the volume-of-fluid (VOF) method, the fluid-flow and heat-transfer phenomena are dynamically studied during the following processes: droplet formation and detachment, impingement of a droplet on a solid substrate, impingement of multiple droplets on the molten pool, and solidification after the are extinguishes. A He-Ne laser, in conjunction with the shadow graphing technique, is used to observe the metal transfer processes. Theoretical predictions and experimental results are in close agreement, suggesting that the theoretical treatment of the model is good.
引用
收藏
页码:791 / 801
页数:11
相关论文
共 29 条
[1]  
Aendenroomer AJR, 1998, WELD J, V77, p181S
[2]   METAL TRANSFER IN ARC-WELDING AS A VARICOSE INSTABILITY .1. VARICOSE INSTABILITIES IN A CURRENT-CARRYING LIQUID CYLINDER WITH SURFACE-CHARGE [J].
ALLUM, CJ .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1985, 18 (07) :1431-1446
[3]   METAL TRANSFER IN ARC-WELDING AS A VARICOSE INSTABILITY .2. DEVELOPMENT OF MODEL FOR ARC-WELDING [J].
ALLUM, CJ .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1985, 18 (07) :1447-1468
[4]  
ANDERSEN K, 1997, IEEE T IND APPL, V33, P464
[5]  
Choi SK, 1998, WELD J, V77, p45S
[6]  
DUPONT JN, 1995, WELD J, V74, pS406
[7]  
ESSERS WG, 1981, WELD J, V60, pS37
[8]   COMPUTER MODELING OF HEAT-FLOW IN WELDS [J].
GOLDAK, J ;
BIBBY, M ;
MOORE, J ;
HOUSE, R ;
PATEL, B .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1986, 17 (03) :587-600
[9]   Predictions of metal droplet formation in arc welding [J].
Haidar, J ;
Lowke, JJ .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1996, 29 (12) :2951-2960
[10]   A theoretical model for gas metal arc welding and gas tungsten arc welding. [J].
Haidar, J .
JOURNAL OF APPLIED PHYSICS, 1998, 84 (07) :3518-3529