scholarly journals Design and Development of Submerged Arc Welding Acidic Flux

2021 ◽  
Author(s):  
Aditya Kumar ◽  
Keyword(s):  
Arc Welding ◽  
Travel Speed ◽  
Submerged Arc Welding ◽  
Weld Bead ◽  
Steel Plates ◽  
Bead Width ◽  
Design Expert ◽  
Creep Feed ◽  
Basicity Index ◽  
Submerged Arc

An acidic flux was intended and developed with the variation of some flux constituents. The basicity index of the flux was kept as 1.84. It was designed to weld the mild steel plates on submerged arc welding machine. A study was done with developed flux on two-level factorial design. Voltage and current were the controlled parameters along with feed rate, nozzle distance and creep feed as uncontrolled parameters selected for experimentation. Eight experiments were performed. Weld bead width and Hardness were the responses measured. Design expert software was used the do the analysis. Finally, it can be determined that travel speed was the most momentous factor for the hardness and weld bead dimensions of the joint.

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

2011 ◽  
Vol 284-286 ◽  
pp. 2469-2472
Author(s):  
Aniruddha Ghosh ◽  
Somnath Chattopadhyaya ◽  
S. Mukherjee
Keyword(s):  
Mild Steel ◽  
Heat Input ◽  
Arc Welding ◽  
Welding Process ◽  
Travel Speed ◽  
Submerged Arc Welding ◽  
Steel Plates ◽  
Critical Set ◽  
Arc Welding Process ◽  
Submerged Arc

In Submerged Arc Welding process involves critical set of variables which are needed to control. An attempt has been made in this paper to find out- the influence of the heat input and bead volume on HAZ Hardness for Submerged Arc Welding Process of Mild steel plates. Mild steel plates are welded by changing input variables (current, voltage, travel speed, i.e. heat input) and Rockwell hardness no. has been observed on welded portion and at the zone adjacent to the welded portion. A detailed analysis of the microstructure changes is carried out to understand the HAZ softening phenomenon.

Tandem Gas Metal Arc Welding for Low Distortion Butt Welds

2011 ◽  
Vol 337 ◽  
pp. 511-516 ◽  
Author(s):  
Nathan Larkin ◽  
Zeng Xi Pan ◽  
Stephen van Duin ◽  
Mark Callaghan ◽  
Hui Jun Li ◽  
...  
Keyword(s):  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Travel Speed ◽  
Submerged Arc Welding ◽  
Steel Plates ◽  
Butt Welds ◽  
Full Penetration ◽  
Metal Arc Welding ◽  
Weld Distortion ◽  
Submerged Arc

The feasibility of using Tandem Gas Metal Arc Welding (T-GMAW) to produce full penetration butt welds in 5mm ship panel steel plates has been assessed and compared to the current Submerged Arc Welding (SAW) process. Experiments conducted show that the T-GMAW process is feasible and demonstrated a significant improvement over the SAW process in several areas including higher travel speed, a reduction in filler material, significantly lower post weld distortion, and a smaller Heat Affected Zone (HAZ), while maintaining similar microstructure and mechanical properties in the weld metal and HAZ.

scholarly journals Multi-wire submerged arc welding: a study of secondary process parameters

2014 ◽  
Vol 5 (1) ◽  
pp. 8
Author(s):  
W. Boudry ◽  
E. Delboo ◽  
K. Faes ◽  
E. Van Pottelberg ◽  
W. De Waele
Keyword(s):  
Process Parameters ◽  
Arc Welding ◽  
Shape Factor ◽  
Submerged Arc Welding ◽  
Weld Bead ◽  
Fractional Factorial ◽  
Secondary Process ◽  
Weld Penetration ◽  
Bead Width ◽  
Submerged Arc

The goal of this thesis is to investigate the effect of secondary process parameters on the geometry of the weld bead in multi-wire submerged arc welding. Bead-on-plate welding experiments will be conducted using 3, 4 and 5 wires. The parameters being varied will be the wire stick out, the angles of the torches and the spacing in between. Primary process parameters like voltage, current and welding speed will be kept constant. Penetration, bead width and height, percentage dilution, HAZ, weld penetration shape factor and weld reinforcement shape factor will be measured and evaluated. Fewer experiments will be needed because of the use of a design of experiments approach, namely a fractional factorial design. This will allow to determine the significance of each single parameter and their mutual interaction with respect to weld bead shape.

Effect of Minor Additives on Bead Geometry and Shape Relationship Using Submerged Arc Welding Fluxes

2015 ◽  
Vol 15 (2) ◽  
pp. 183-196
Author(s):  
Brijpal Singh ◽  
Zahid Akhtar Khan ◽  
Arshad Noor Siddiquee
Keyword(s):  
Arc Welding ◽  
Travel Speed ◽  
Submerged Arc Welding ◽  
Welding Parameters ◽  
Deep Penetration ◽  
Bead Geometry ◽  
Weld Penetration ◽  
Design Expert ◽  
Welding Fluxes ◽  
Submerged Arc

AbstractSubmerged arc welding (SAW) is extensively used because of its ability of metal refinement, deep penetration and protection from atmospheric contamination. In this study 20 base fluxes having CaO–SiO2–Al2O3 were prepared by agglomeration technique and CaF2, FeMn and NiO were added to study their effects on bead geometry (weld width, reinforcement and penetration) and shape relationship parameters (weld penetration shape factor and weld reinforcement form factor). The bead on plate welds was made on 18 mm thick MS plates using submerged arc welding. Welding parameters voltage, current and travel speed were kept constant. Design expert 8.0.7.1 has been used to develop mathematical models and ANOVA was used to check the accuracy and significance of the developed models. In this study the elements transferred to the welds during submerged arc welding have been correlated with the bead geometry.

Mechanical Behaviour of Welded Joints Achieved by Multi-Wire Submerged Arc Welding

2017 ◽  
Vol 1143 ◽  
pp. 52-57
Author(s):  
Elena Scutelnicu ◽  
Carmen Catalina Rusu ◽  
Bogdan Georgescu ◽  
Octavian Mircea ◽  
Melat Bormambet
Keyword(s):  
Mechanical Behaviour ◽  
Welded Joints ◽  
Arc Welding ◽  
Base Material ◽  
High Strength ◽  
Submerged Arc Welding ◽  
Steel Plates ◽  
Wire Saw ◽  
Api 5L X70 Steel ◽  
Submerged Arc

The paper addresses the development of advanced welding technologies with two and three solid wires for joining of HSLA API-5l X70 (High-strength low-alloy) steel plates with thickness of 19.1 mm. The experiments were performed using a multi-wire Submerged Arc Welding (SAW) system that was developed for welding of steels with solid, tubular and cold wires, in different combinations. The main goal of the research was to assess the mechanical performances of the welded joints achieved by multi-wire SAW technology and then to compare them with the single wire variant, as reference system. The welded samples were firstly subjected to NDT control by examinations with liquid penetrant, magnetic particle, ultrasonic and gamma radiation, with the aim of detecting the specimens with flaws and afterwards to reconsider and redesign the corresponding Welding Procedure Specifications (WPS). The defect-free welded samples were subjected to tensile, Charpy V-notch impact and bending testing in order to analyse and report the mechanical behaviour of API-5l X70 steel during multi-wire SAW process. The experimental results were processed and comparatively discussed. The challenge of the investigation was to find the appropriate welding technology which responds simultaneously to the criteria of quality and productivity. Further research on metallurgical behaviour of the base material will be developed, in order to conclude the complete image of the SAW process effects and to understand how the multi-wire technologies affect the mechanical and metallurgical characteristics of the API-5L X70 steel used in pipelines fabrication.

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