Role of Process Parameters on Bead geometry and Metallurgical Characteristics in autogenous Gas Tungsten Arc Welding of Maraging Steels (250 grade)

2018 ◽  
Vol 5 (2) ◽  
pp. 7640-7649
Author(s):  
V. Rajkumar ◽  
R. Immanual ◽  
N. Sivashanmugam ◽  
S.P. Kumaresh Babu ◽  
N. Arivazhagan
Keyword(s):  
Process Parameters ◽  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Bead Geometry ◽  
Maraging Steels ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

Real-time observation of cathodic cleaning during variable-polarity gas tungsten arc welding of aluminium alloy

2009 ◽  
Vol 223 (9) ◽  
pp. 1143-1157 ◽  
Author(s):  
R Sarrafi ◽  
D Lin ◽  
R Kovacevic
Keyword(s):  
Real Time ◽  
Process Parameters ◽  
Arc Welding ◽  
Molten Pool ◽  
Gas Tungsten Arc Welding ◽  
Process Conditions ◽  
Current Electrode ◽  
Gas Tungsten Arc ◽  
Variable Polarity ◽  
Gas Tungsten

Online observation is expected to provide a better understanding of the cathodic cleaning of oxides from the molten pool during variable-polarity gas tungsten arc welding (VP GTAW) of aluminium alloys. In this paper, a machine-vision system with appropriate illumination and filtering is used to monitor in real time the effect of different process parameters on the cleaning of oxides from the molten pool during VP GTAW of Al 6061. Based on the observations, the process conditions under which a clean molten pool can be achieved are determined. In addition, the control of the welding process to maintain the consistency of cathodic cleaning is discussed. The results showed that in order to have an oxide-free molten pool, the solid surface in front of the molten pool should be cleaned from oxides by the electric arc. The choice of process parameters to satisfy this condition has been discussed. It was found that the percentage of direct current electrode positive (DCEP) polarity in the cycle of current has the highest impact on the cathodic cleaning, with the arc current having less influence, and the welding speed showing the least effect. Furthermore, in order to keep the consistency of oxide cleaning, process parameters should be set or controlled to maintain the cleaned zone larger than the molten pool.

scholarly journals Processing of copper by keyhole gas tungsten arc welding for uniformity of weld bead geometry

2020 ◽  
Vol 35 (15) ◽  
pp. 1707-1716
Author(s):  
Raghavendra Darji ◽  
Vishvesh Badheka ◽  
Kush Mehta ◽  
Jaydeep Joshi ◽  
Ashish Yadav
Keyword(s):  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Weld Bead ◽  
Bead Geometry ◽  
Weld Bead Geometry ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

scholarly journals Monitoring of Welding Process Parameters in Gas Tungsten Arc Welding of Carbon Steel Weldments

Mechanika ◽  
2019 ◽  
Vol 25 (1) ◽  
Author(s):  
Regita BENDIKIENE ◽  
Saulius BASKUTIS ◽  
Jolanta BASKUTIENE ◽  
Lina KAVALIAUSKIENE
Keyword(s):  
Carbon Steel ◽  
Process Parameters ◽  
Arc Welding ◽  
Welding Process ◽  
Gas Tungsten Arc Welding ◽  
Gas Tungsten Arc ◽  
Gas Tungsten
Sign in / Sign up

Export Citation Format

Share Document