Visualization of arc plasma and molten wire behavior in CO2 arc welding process by three-dimensional numerical simulation

2020 ◽  
Vol 64 (10) ◽  
pp. 1789-1797
Author(s):  
Y. Ogino ◽  
S. Asai ◽  
Y. Hirata
Keyword(s):  
Numerical Simulation ◽  
Arc Welding ◽  
Three Dimensional ◽  
Welding Process ◽  
Arc Plasma ◽  
Arc Welding Process

scholarly journals Numerical simulation of weld pool formation in submerged arc welding process

2020 ◽  
Vol 38 (4) ◽  
pp. 355-362
Author(s):  
Yosuke OGINO ◽  
Masahiro IIDA ◽  
Satoru ASAI ◽  
Shohei KOZUKI ◽  
Naoya HAYAKAWA ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Weld Pool ◽  
Arc Welding ◽  
Welding Process ◽  
Submerged Arc Welding ◽  
Arc Welding Process ◽  
Pool Formation ◽  
Submerged Arc

Analysis of Temperature Distribution in Rotating Arc Welding

2012 ◽  
Vol 472-475 ◽  
pp. 1346-1352 ◽  
Author(s):  
Qiang Bai ◽  
Ning Guo ◽  
Yan Fei Han ◽  
Jing Zhang ◽  
Mei Rong Wang
Keyword(s):  
Temperature Distribution ◽  
Arc Welding ◽  
Three Dimensional ◽  
Welding Process ◽  
Peripheral Region ◽  
Peak Temperature ◽  
Element Analysis ◽  
Analysis Computer ◽  
Rotating Arc ◽  
Arc Welding Process

Mathematical model of heat source in rotating arc welding (RAW) process was developed for investigating the heat and temperature distribution. The effect of rotating parameters on the temperature field in complex welding motion trajectory was studied. In this work, a transient three-dimensional (3D) model was established and computed by a finite element analysis computer program MARC as well as its subroutine. Comparing with non-rotating arc (NRAW) process, the width of temperature distribution enlarges, and the peak temperature of weld pool decreases. The effect of the rotating arc process becomes more and more significant with the increasing of rotating radius. In the weld center, the peak temperature increases with the rotating frequency. But in peripheral region of the weld, when rotating frequency is lower than 10 Hz, the peak temperature increases firstly and then decreases with the increasing of the rotating frequency. It is contradictory with the traditional view. Good agreement is shown between the computed results and experimental results of thermal circle in rotating arc welding process.

Modeling and Simulation of Mecano-Welding Process for Cylinders

2012 ◽  
Author(s):  
Zhengkun Feng ◽  
Henri Champliaud
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Arc Welding ◽  
Thick Plate ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
The Third ◽  
Metal Arc Welding ◽  
Roll Bending ◽  
Arc Welding Process

Pyramidal three-roll bending is widely used in manufacture due to its simple configuration and advantage for thick plate roll bending. However, there remain two planar zones near the front and rear ends of the bent shape. A mecano-welding process which provides improved circularity of the bent shape is proposed in this paper. This process includes three sub-processes: the first sub-process is the roll bending from a plate with cylindrical rolls; the second sub-process is the gas metal arc-welding process used to join the gap of the bent tubular section; the third sub-process is the rerun roll bending of the welded shape. Results of the numerical simulation of the first two sub-processes under the well-known ANSYS and ANSYS/LS-DYNA environment are reported. The bent shape after the first roll bending, the distributions of the temperature and residual stress after the welding are illustrated and discussed.

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