Modelling turbulent thermofluid flow in stationary gas tungsten arc weld pools

2002 ◽  
Vol 7 (3) ◽  
pp. 125-136 ◽  
Author(s):  
K. Hong ◽  
D. C. Weckman ◽  
A. B. Strong ◽  
W. Zheng
Keyword(s):  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
Weld Pools

Mathematical modeling of the dynamic behavior of gas tungsten arc weld pools

2000 ◽  
Vol 31 (6) ◽  
pp. 1465-1473 ◽  
Author(s):  
Sung H. Ko ◽  
Choong D. Yoo ◽  
Dave F. Farson ◽  
Sang K. Choi
Keyword(s):  
Mathematical Modeling ◽  
Dynamic Behavior ◽  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
Weld Pools

Heating Characteristics of Gas Tungsten Arc Welding of Copper Thick Plates with Shielding Gas of Argon, Helium or Nitrogen

2007 ◽  
Vol 353-358 ◽  
pp. 2096-2099 ◽  
Author(s):  
Jiu Chun Yan ◽  
Yi Nan Li ◽  
Wei Wei Zhao ◽  
Shi Qin Yang
Keyword(s):  
Welded Joints ◽  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Rise Velocity ◽  
Shielding Gas ◽  
Welding Temperature ◽  
Thick Plates ◽  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
Weld Pools

The welding temperature patterns of gas tungsten arc welding for copper thick plates during Ar, He or N2 shielded arc welding were simulated, and the size of weld pools and heat-affected zones have been compared. It was predicted that the heat-affected zone in the welded joints during Ar arc welding is the widest and that during N2 arc welding is the narrowest, while the size of weld pools using Ar (preheating at 400°C), He and N2 (without preheating) shielding arc welding is very similar. Among the three kinds of gases shielded arc welding, the temperature gradient of welded joints during Ar arc welding is the least and that during N2 arc welding is the greatest. The temperature rise velocity at the arc center during N2 arc welding is the highest, and those at the zone close to the weld pool of welded joints during He arc and N2 arc welding are a few higher than that during Ar arc welding.

scholarly journals Mapping flow evolution in gas tungsten arc weld pools

2021 ◽  
Vol 179 ◽  
pp. 121679
Author(s):  
Fan Wu ◽  
Thomas.  F. Flint ◽  
Ken Vidar Falch ◽  
Michael C. Smith ◽  
Michael Drakopoulos ◽  
...  
Keyword(s):  
Gas Tungsten Arc ◽  
Flow Evolution ◽  
Gas Tungsten ◽  
Weld Pools

INVESTIGATION OF PULSE FREQUENCY ON FUSION ZONE CHARACTERISTICS OF GTA WELDED AZ31B MAGNESIUM ALLOY JOINTS

2020 ◽  
Vol 15 (2) ◽  
Author(s):  
Subravel V
Keyword(s):  
Magnesium Alloy ◽  
Tensile Properties ◽  
Fusion Zone ◽  
Welding Speed ◽  
Pulse Frequency ◽  
Pulsed Current ◽  
Az31b Magnesium Alloy ◽  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
Different Levels

In this investigation an attempt has been made to study the effect of welding on fusion characteristics of pulsed current gas tungsten arc welded AZ31B magnesium alloy joints. Five joints were fabricated using different levels of welding speed (105 mm/min –145 mm/min). From this investigation, it is found that the joints fabricated using a welding speed of 135 mm/min yielded superior tensile properties compared to other joints. The formation of finer grains and higher hardness in fusion zone and uniformly distributed precipitates are the main reasons for the higher tensile properties of these joints

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