scholarly journals Thermal Conduction Theoretical Analysis of Temperature Distribution during Multiple-Electrode Submerged Arc Welding

2010 ◽  
Vol 28 (1) ◽  
pp. 158-166 ◽  
Author(s):  
Nobuhisa OCHI ◽  
Shigetaka OKANO ◽  
Masahito MOCHIZUKI ◽  
Junji SHIMAMURA ◽  
Nobuyuki ISHIKAWA
Keyword(s):  
Temperature Distribution ◽  
Theoretical Analysis ◽  
Arc Welding ◽  
Thermal Conduction ◽  
Submerged Arc Welding ◽  
Submerged Arc ◽  
Multiple Electrode

Thermal conduction theoretical analysis of temperature distribution during multiple-electrode submerged arc welding

2012 ◽  
Vol 28 (3) ◽  
pp. 174-183
Author(s):  
Nobuhisa Ochi ◽  
Shigetaka Okano ◽  
Masahito Mochizuki ◽  
Junji Shimamura ◽  
Nobuyuki Ishikawa
Keyword(s):  
Temperature Distribution ◽  
Theoretical Analysis ◽  
Arc Welding ◽  
Thermal Conduction ◽  
Submerged Arc Welding ◽  
Submerged Arc ◽  
Multiple Electrode

A Simplified Numerical Approach for Finding the Temperature Distribution in Submerged arc Welding Process

2012 ◽  
Vol 622-623 ◽  
pp. 315-318
Author(s):  
Aparesh Datta ◽  
Subodh Debbarma ◽  
Subhash Chandra Saha
Keyword(s):  
Temperature Distribution ◽  
Heat Source ◽  
Arc Welding ◽  
Welding Process ◽  
Numerical Approach ◽  
High Heat ◽  
Submerged Arc Welding ◽  
Fusion Welding ◽  
Arc Welding Process ◽  
Submerged Arc

The quality of joining has assumed a greater role in fabrication of metal in recent years, because of the development of new alloys with tremendously increased strength and toughness. Submerged arc welding is a high heat input fusion welding process in which weld is produced by moving localized heat source along the joint. The weld quality in turn affected by thermal cycle that the weldment experiences during the welding. In the present study a simple comprehensive mathematical model has been developed using a moving heat source and analyzing the temperature on one section and then the temperature distribution of other section are correlated with time delay with reference analyzed section.

Prediction of Temperature Distribution on Submerged Arc Welded Plates through Gaussian Heat Distribution Technique

2011 ◽  
Vol 284-286 ◽  
pp. 2477-2480 ◽  
Author(s):  
Aniruddha Ghosh ◽  
Somnath Chattopadhyaya
Keyword(s):  
Temperature Distribution ◽  
Arc Welding ◽  
Infinite Plate ◽  
Welding Process ◽  
Submerged Arc Welding ◽  
High Deposition Rate ◽  
Microstructure Modeling ◽  
Arc Welding Process ◽  
Submerged Arc ◽  
Good Agreement

Submerged Arc Welding process (SAW) is a high quality, very high deposition rate welding process. It has lot of social and economical implecations.This paper makes an attempt to uncover an important area on studies of temperature distribution during submerged arc welding because this may pave the way for application of microstructure modeling, thermal stress analysis, residual stress/distribution and welding process simulation. Prediction of temperature variation of entire plates during welding through an analytical solution is derived from the transient multi dimensional heat conduction of semi infinite plate. The heat input that is applied on the plate is exactly same amount of heat lost for electric arc, which is assumed to be a moving double conical heat source with Gaussian distribution for Submerged Arc Welding process. Good agreement between predicted and experimental results has been achieved.

scholarly journals Modeling of Thermel Transport for GMAW

2012 ◽  
Vol 2012 ◽  
pp. 1-8
Author(s):  
Aniruddha Ghosh
Keyword(s):  
Temperature Distribution ◽  
Heat Source ◽  
Heat Input ◽  
Arc Welding ◽  
Welding Process ◽  
Submerged Arc Welding ◽  
Bead Geometry ◽  
Infinite Body ◽  
Weld Bead Geometry ◽  
Submerged Arc

Investigation of temperature distribution of submerged arc welded plates is essential while designing submerged arc welding joint because the key parameter for the change of weld bead geometry dimension, thermal stress, residual stress, tensile stress, hardness, and so forth is heat input, and heat input is the function of temperature distribution of GMAW process. An attempt is made in this paper to find out the exact solution of the thermal field induced in a semi-infinite body by a moving heat source with Gaussian distribution by selecting appropriate inside volume for submerged arc welding process. It has been revealed that for GMAW, best suitable heat source shape is a combination of semispherical and semioval.

scholarly journals As to Arc Phenomenon of Multiple Electrode Submerged Arc Welding

1958 ◽  
Vol 27 (11) ◽  
pp. 647-652
Author(s):  
H. Kihara ◽  
K. Masubuchi ◽  
Y. Ogura ◽  
O. Takagi ◽  
M. Hamazaki
Keyword(s):  
Arc Welding ◽  
Submerged Arc Welding ◽  
Submerged Arc ◽  
Multiple Electrode

Prediction of Transient Temperature Distribution, HAZ Width and Microstructural Analysis of Submerged Arc-Welded Structural Steel Plates

2011 ◽  
Vol 316-317 ◽  
pp. 135-152 ◽  
Author(s):  
Aniruddha Ghosh ◽  
Somnath Chattopadhyaya
Keyword(s):  
Temperature Distribution ◽  
Analytical Solution ◽  
Arc Welding ◽  
Submerged Arc Welding ◽  
Electric Arc ◽  
Steel Plates ◽  
Transient Temperature ◽  
Transient Temperature Distribution ◽  
Haz Width ◽  
Submerged Arc

Critical investigation of the transient temperature distribution is important for maintaining the quality of the Submerged Arc Welding of structural steel plates. The aim of this paper is to derive an analytical solution to predict the transient temperature distribution on the plate during the process of Submerged Arc Welding. An analytical solution is obtained from the 3D heat conduction equation. The main energy input that is applied on the plate is taken as the heat lost from the electric arc. The kinetic energy of filler droplets, electromagnetic force and drag force are also considered as input to the process. The electric arc is assumed to be a moving double Central Conicoidal heat source which follows approximately the Gaussian distribution. It is observed that the predicted values are in good agreement with the experimental results. The heat-affected zone (HAZ) width calculation is also done with the help of the analytical solution of the transient 3D heat conduction equation. Analysis of microstructural changes is critically investigated to comprehend the HAZ softening phenomenon and for the validation of the predicted HAZ width.

scholarly journals Critical Assessment of Temperature Distribution in Submerged Arc Welding Process

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Vineet Negi ◽  
Somnath Chattopadhyaya
Keyword(s):  
Temperature Distribution ◽  
Material Properties ◽  
Arc Welding ◽  
Welding Process ◽  
Radiant Heat ◽  
Submerged Arc Welding ◽  
Weld Residual Stress ◽  
Arc Welding Process ◽  
Analytical Approaches ◽  
Submerged Arc

Temperature distribution during any welding process holds the key for understanding and predicting several important welding attributes like heat affected zone, microstructure of the weld, residual stress, and distortion during welding. The accuracy of the analytical approaches for modeling temperature distribution during welding has been constrained by oversimplified assumptions regarding boundary conditions and material properties. In this paper, an attempt has been made to model the temperature distribution during submerged arc welding process using finite element modeling technique implemented in ANSYS v12. In the present analysis, heat source is assumed to be double-ellipsoidal with Gaussian volumetric heat generation. Furthermore, variation of material properties with temperature and both convective and radiant heat loss boundary condition have been considered. The predicted temperature distribution is then validated against the experimental results obtained by thermal imaging of the welded plate, and they are found to be in a good agreement.

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