Twin-wire submerged arc welding process of a high-strength low-alloy steel

In this paper, the influence of double wire submerged arc welding parameters on the mechanical properties of high strength low alloy has been investigated. The 20mm steel plate has been welded by double wire submerged arc welding process using different welding parameters. The Charpy absorbed energy of specimens is assessed using impact test at the temperature of -50°C. Testing results show that high heat input parameters will lead to low strength of welded joint. Impact toughness of fusion line is lower than that of other areas of welded joint.

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Analysis of The Influence of The Heat Input and Bead Volume on HAZ Hardness for Submerged Arc Welding Process of Mild Steel Plates

Indian Welding Journal ◽

10.22486/iwj.v41i3.178104 ◽

2008 ◽

Vol 41 (3) ◽

pp. 46

Author(s):

G. Vinamra ◽

A. Kumar ◽

P. K. Rai ◽

A. Ghosh ◽

S. Mukherkee ◽

...

Keyword(s):

Mild Steel ◽

Heat Input ◽

Arc Welding ◽

Welding Process ◽

Submerged Arc Welding ◽

Steel Plates ◽

Arc Welding Process ◽

Submerged Arc

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Influence of Thermal Simulated and Real Tandem Submerged Arc Welding Process on the Microstructure and Mechanical Properties of the Coarse Grained Heat Affected Zone

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.110-116.3191 ◽

2011 ◽

Vol 110-116 ◽

pp. 3191-3198

Author(s):

Sadegh Moeinifar

Keyword(s):

Grain Boundaries ◽

Heat Affected Zone ◽

Heat Input ◽

Arc Welding ◽

Welding Process ◽

Submerged Arc Welding ◽

Rolled Plate ◽

Arc Welding Process ◽

Submerged Arc ◽

Tandem Submerged Arc Welding

The high-strength low-alloy microalloyed steel was procured as a hot rolled plate with accelerated cooling. The Gleeble thermal simulated process involved heating the steel specimens to the peak temperature of 1400 °C, with constant cooling rates of 3.75 °C/s and 2 °C/s to room temperature. The four-wire tandem submerged arc welding process, with different heat input, was used to generate a welded microstructure. The martensite/austenite constituent appeared in the microstructure of the heat affected zone region for all the specimens along the prior-austenite grain boundaries and between bainitic ferrite laths. The blocky-like and stringer martensite/austenite morphology were observed in the heat affected zone regions. The martensite/austenite constituents were obtained by a combination of field emission scanning electron microscopes and image analysis software The Charpy absorbed energy of specimens was assessed using Charpy impact testing at-50 °C. Brittle particles, such as martensite/austenite constituent along the grain boundaries, can make an easy path for crack propagation. Similar crack initiation sites and growth mechanism were investigated for specimens welded with different heat input values.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.622-623.315 ◽

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.

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