scholarly journals Influence of the arc plasma parameters on the weld pool profile in TIG welding

2014 ◽  
Vol 550 ◽  
pp. 012004 ◽  
Author(s):  
A Toropchin ◽  
V Frolov ◽  
A V Pipa ◽  
R Kozakov ◽  
D Uhrlandt
Keyword(s):  
Weld Pool ◽  
Tig Welding ◽  
Arc Plasma ◽  
Plasma Parameters ◽  
Pool Profile

A unified model of coupled arc plasma and weld pool for double electrodes TIG welding

2014 ◽  
Vol 47 (27) ◽  
pp. 275202 ◽  
Author(s):  
Xinxin Wang ◽  
Ding Fan ◽  
Jiankang Huang ◽  
Yong Huang
Keyword(s):  
Weld Pool ◽  
Unified Model ◽  
Tig Welding ◽  
Arc Plasma

Study on Fast-Convert Ultrasonic Frequency Pulse TIG Welding Arc Characteristic

2011 ◽  
Vol 704-705 ◽  
pp. 745-751 ◽  
Author(s):  
Bo Jin Qi ◽  
Ming Xuan Yang ◽  
Bao Qiang Cong ◽  
Wei Li
Keyword(s):  
Pulse Current ◽  
Current Level ◽  
Tig Welding ◽  
Ultrasonic Frequency ◽  
Arc Plasma ◽  
Arc Voltage ◽  
Welding Arc ◽  
Huge Impact ◽  
Pulse Peak ◽  
Frequency Pulse

Based on ultrasonic frequency pulse tungsten inert-gas (TIG) welding for 0Cr18Ni9Ti austenitic stainless steel, the influence of pulse level parameters was investigated on the field of arc characteristic and arc force. The experimental results show that the pulse level parameters could have huge impact to arc characteristic and arc force. With the increased frequency of pulse level, arc plasma has a more obvious pinch effect, which causes the enhance of arc voltage. Similarly, the arc force can be improved obviously compared with that during conventional direct current (DC) TIG welding. By contrast, the sensitivity of welding characteristic to pulse current level frequency would reduce while the duty of pulse peak current increased.

Influence of the conditions of weld pool protection by argon on the properties of welds in tig welding of titanium

2021 ◽  
Vol 2021 (6) ◽  
pp. 36-40
Author(s):  
V.P. Prilutskyi ◽  
◽  
L.Ye. Yeroshenko ◽  
Keyword(s):  
Weld Pool ◽  
Tig Welding

scholarly journals Analysis and Characterization of the Weld Pool and Bead Geometry of Inconel 625 Super-TIG Welds

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 365
Author(s):  
Jung Hyun Park ◽  
Muralimohan Cheepu ◽  
Sang Myung Cho
Keyword(s):  
Production Rate ◽  
Weld Pool ◽  
Tig Welding ◽  
Fusion Welding ◽  
Inconel 625 ◽  
Bead Geometry ◽  
Weld Bead Geometry ◽  
High Production Rate ◽  
The Difference ◽  
Bead Height

The welding market is changing globally, becoming eco-friendly, robotized and automated. The tungsten inert gas welding (TIG) process is indispensable in industries that require high-quality welds with the absence of spatter and fumes. However, the production rate of TIG welding is very low, which limits its many applications. The present study introduces a novel TIG welding method called super-TIG welding. Super-TIG welding is able to produce a high production rate of welds compared to other fusion welding methods. In super-TIG welding, the novel C-type filler is used, which is different from the conventional TIG welding of circular wire. The relations of the heat input ratio in super-TIG welding to weld pool length and weld bead geometry were measured using the Inconel 625 C-filler. Two types of deposition techniques were used for a bead-on-plate welds, such as stringer beads and oscillation beads. The weld pool and bead geometry measurements are found to be different between stringer beads and oscillation bead techniques. The length of the molten pool and bead size were higher for oscillation beads over the stringer beads. These changes were associated with the difference in heat transfer contact area and bead height.

Absolutmessung der kontinuierlichen Strahlung des Heliums im Lichtbogen von λ = 109 bis 540 nm / Measurement of the Helium Continuum Radiation from λ = 109 to 540 nm in an Arc Plasma

1980 ◽  
Vol 35 (8) ◽  
pp. 808-819 ◽  
Author(s):  
P. Thoma
Keyword(s):  
Energy Balance ◽  
Theoretical Calculations ◽  
Continuum Emission ◽  
Kinetic Temperature ◽  
Arc Plasma ◽  
Plasma Parameters ◽  
Continuum Radiation ◽  
Theoretical Results ◽  
Helium Emission ◽  
Good Agreement

Abstract Absolute helium emission coefficients have been measured from 540 nm down to 109 nm in the near vuv. The radiation originates from the axis of a cylindrical He-arc of 2 mm ∅ at one atmosphere with electron temperatures between 25000 K and 26500 K. The electron densities range from 3.0 · 1016 cm-3 to 4.0 · 1016 cm-3 and have been determined independently from other plasma parameters by means of line shape measurements. The density of atoms and their kinetic temperature have been calculated from the energy balance of the electrons and Dalton's law. Comparison of the measured helium continuum emission coefficients with theoretical calculations in the wavelength range from 540 nm to 400 nm shows that, in this experiment, the radiation due to bremsstrahlung in the field of atoms must not be neglected. Taking into account this contribution very good agreement with theoretical calculations over the whole investigated spectral range from 540 nm down to 109 nm has been found. Thus the present experiment confirms the theoretical results for the photoionisation coefficients from the n = 2 and n = 3 levels. On the basis of these results the helium continuum radiation may be used for calibration purposes, which is of particular interest in the vuv.

Stabilization of weld pool through jet flow argon gas backing in C-Mn steel keyhole TIG welding

2017 ◽  
Vol 250 ◽  
pp. 132-143 ◽  
Author(s):  
ZuMing Liu ◽  
YueXiao Fang ◽  
JiaYu Qiu ◽  
MengNan Feng ◽  
Zhen Luo ◽  
...  
Keyword(s):  
Weld Pool ◽  
Jet Flow ◽  
Tig Welding ◽  
Argon Gas ◽  
Mn Steel

Thermal and force effects of the arc on the weld pool in non-consumable electrode (TIG) welding in inert gas mixtures

2016 ◽  
Vol 30 (12) ◽  
pp. 941-944 ◽  
Author(s):  
A. V. Savinov ◽  
I. E. Lapin ◽  
O. A. Polesskiy ◽  
V. I. Lysak ◽  
P. P. Krasikov
Keyword(s):  
Weld Pool ◽  
Gas Mixtures ◽  
Consumable Electrode ◽  
Tig Welding ◽  
Inert Gas

Prediction of Surface Depression of a Tungsten Inert Gas Weld Pool in the Full-Penetration Condition

1995 ◽  
Vol 209 (3) ◽  
pp. 221-226 ◽  
Author(s):  
C S Wu ◽  
L Dorn
Keyword(s):  
Weld Pool ◽  
Dynamic Balance ◽  
Three Dimensional ◽  
Tig Welding ◽  
Inert Gas ◽  
Three Dimensional Model ◽  
Pool Surface ◽  
Full Penetration ◽  
Weld Pool Surface ◽  
Surface Depression

A three-dimensional model is set up to predict the surface depression of a tungsten inert gas (TIG) weld pool in a full-penetration condition in order to find out the relation between pool depression and weld penetration. It solves pool surface depression, fluid flow and heat transfer simultaneously and determines the configuration of a weld pool surface based on the dynamic balance among arc pressure, pool gravity and surface tension at the deformed weld pool surface. In the numerical simulation, difficulties associated with the irregular shape of the deformed weld pool surface and the liquid/solid interface have been overcome by adopting a boundary-fitted non-orthogonal curvilinear coordinate system. A series of data about pool surface depression under different TIG welding conditions are obtained. The validity of the model is verified through TIG welding experiments.

Sign in / Sign up

Export Citation Format

Share Document