scholarly journals Twin-Wire Pulsed Tandem Gas Metal Arc Welding of API X80 Steel Linepipe

2018 ◽  
Vol 2018 ◽  
pp. 1-11
Author(s):  
Wenhao Wu ◽  
Ming Zhao ◽  
Haiyan Wang ◽  
Yanxia Zhang ◽  
Tong Wu
Keyword(s):  
Corrosion Resistance ◽  
Weld Metal ◽  
Base Metal ◽  
Corrosion Behavior ◽  
Arc Welding ◽  
Production Efficiency ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
Metal Arc Welding ◽  
X80 Steel

Twin-Wire Pulsed Tandem Gas Metal Arc Welding process with high welding production efficiency was used to join the girth weld seam of API X80 steel linepipe of 18.4 mm wall thickness and 1422 mm diameter. The macrostructure, microstructure, hardness, and electrochemical corrosion behavior of welded joints were studied. Effects of temperature and Cl− concentration on the corrosion behavior of base metal and weld metal were investigated. Results show that the welded joint has good morphology, mechanical properties, and corrosion resistance. The corrosion resistance of both the base metal and the weld metal decreases with increasing temperature or Cl− concentration. In the solution with high Cl− concentration, the base metal and weld metal are more susceptible to pitting. The corrosion resistance of the weld metal is slightly lower than that of the base metal.

Microstructure and fatigue behaviour of spin-arc welded AISI C1018 low carbon steel

2021 ◽  
pp. 095440892110277
Author(s):  
K Parthiban ◽  
S Mohan Kumar ◽  
A Rajesh Kannan ◽  
N Siva Shanmugam ◽  
K Sankaranarayanasamy
Keyword(s):  
Carbon Steel ◽  
Weld Metal ◽  
Base Metal ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Low Carbon Steel ◽  
Welding Process ◽  
Fatigue Behaviour ◽  
Steel Plates ◽  
Low Carbon

This work investigates the fatigue performance of 10 mm AISI C1018 low carbon steel plates welded with ER70S-6 using a gas metal arc welding-based spin-arc welding process. Welded joint microstructure is characterized by bainite, acicular ferrite, and allotriomorphic ferrite along with pearlite in the ferritic matrix. The tensile strength of the weld metal was comparable with base metal and meets the mechanical property requirements in accordance with the ASTM A311/A311M-04 (2020) standard. The fatigue strengths of base metal and weld metal are 121 and 126 MPa, respectively, after sustaining 106 cycles. During cyclic loading, fracture surfaces were distinctly noticed as the crack initiation, crack propagation, and final rupture regions. The decrease in alternating stress increased the fatigue cycles to final rupture, and the nature of fatigue fracture was ductile with dimples and voids.

The Influence of Gas Metal Arc Welding Parameters on the Carbon Steel ss400 Grade by Using 23 Factorial Design

2011 ◽  
Vol 341-342 ◽  
pp. 11-15
Author(s):  
Prachya Peasura ◽  
Mongkol Chaisri
Keyword(s):  
Weld Metal ◽  
Feed Rate ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
Travel Speed ◽  
Factors Affecting ◽  
Metal Arc Welding ◽  
Arc Welding Process ◽  
Wire Feed

The experimental observation reveals that the influence of gas metal arc welding process on physical properties. The specimen was carbon steel ss400 grade sheet of 6 mm. The experiments with 23 factorial design. The factors used in this study are voltage at 20 and 23 V, travel speed at 5 and 7 mm/sec and wire feed rate were set at 80 and 110 mm/sec. The welded specimens were tested by penetration, width of weld metal and high of weld metal. The result showed that the voltage, travel speed and wire feed rate had interaction on penetration, width of weld metal and high of weld metal at 95% confidential (P value < 0.05). Factors affecting the penetration are the most voltage of 23 V, travel speed 7 mm/sec and wire feed rate 110 mm/sec. were penetration of 31.68 mm. The width of weld metal was most at 9.9 mm. on voltage of 23 V, travel speed 5 mm/sec and wire feed rate 110 mm/sec. The factors affecting the high of weld metal are most voltage of 20 V, travel speed 5 mm/sec and wire feed rate 110 mm/sec. were penetration of 4.51 mm. This research can bring information to the foundation in choosing the appropriate parameters to gas metal arc welding process.

scholarly journals Influence of Gravity on Molten Pool Behavior and Analysis of Microstructure on Various Welding Positions in Pulsed Gas Metal Arc Welding

2019 ◽  
Vol 9 (21) ◽  
pp. 4626 ◽  
Author(s):  
Jin-Hyeong Park ◽  
Sung-Hwan Kim ◽  
Hyeong-Soon Moon ◽  
Myung-Hyun Kim
Keyword(s):  
Weld Metal ◽  
Arc Welding ◽  
Molten Pool ◽  
High Speed ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
High Speed Camera ◽  
Shielding Gas ◽  
Metal Arc Welding ◽  
The One

This study performed welding on various welding positions in the flat, overhead, and vertical down positions using a pulsed gas metal arc welding (P-GMAW) process. Despite the same amount of heat input on various welding positions, the welding characteristics varied depending on the welding positions. The effect of gravity on the welding process determined the different formation of the weld bead, and the influence of molten pool behavior on various welding positions changed the microstructure in the weld metal. The current and voltage signals were synchronized with a high-speed camera using a data acquisition (DAQ) system. To induce the one pulse one drop (OPOD) process of metal transfer, the shielding gas was used 95% Ar+5% CO2. The microstructure of the weld metal was analyzed in relation to molten pool behavior.

Microstructure and Bending Strength of Dissimilar SS400/SUS304 Steels T-Fillet Joint by Gas Metal Arc Welding

2018 ◽  
Vol 773 ◽  
pp. 189-195 ◽  
Author(s):  
Kittipong Kimapong ◽  
Surat Triwanapong
Keyword(s):  
Weld Metal ◽  
Base Metal ◽  
Arc Welding ◽  
Joint Strength ◽  
Gas Metal Arc Welding ◽  
Welding Current ◽  
High Chromium ◽  
Metal Arc Welding ◽  
Joint Properties ◽  
Fillet Joint

In this paper, experiments on welding a dissimilar SS400/SUS304 steel T-fillet joint using high chromium electrode, and an effect of welding current on joint properties were studied. T-joints wielded by the designed specific welding currents were mechanically prepared and systematically investigated for joint properties. The experimental results were summarized as follows. Dissimilar SS400/SUS304 steels T-fillet joint could be successfully welded using a gas metal arc welding process with no defect in a weld metal. The optimized welding current in this experiment was 160 A that showed the least crack length of 0.247 mm. from a bending test. A different chemical composition of low carbon steel and high chromium weld metal produced a small interface shown with a smaller mixed zone of reinforced elements and base metal. It was also affected to decrease in the joint strength. However, the increase in the welding current could increase a combination of reinforced elements and a base metal on the interface, and it showed an effect to increase in the joint strength.

scholarly journals Two gas metal arc welding process dataset of arc parameters and input parameters

Data in Brief ◽  
2021 ◽  
Vol 35 ◽  
pp. 106790
Author(s):  
Rogfel Thompson Martinez ◽  
Guillermo Alvarez Bestard ◽  
Sadek C. Absi Alfaro
Keyword(s):  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
Metal Arc Welding ◽  
Input Parameters ◽  
Arc Welding Process

scholarly journals Porosity Characteristics and Effect on Tensile Shear Strength of High-Strength Galvanized Steel Sheets after the Gas Metal Arc Welding Process

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1077 ◽  
Author(s):  
Seungmin Shin ◽  
Sehun Rhee
Keyword(s):  
Shear Strength ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Welding Process ◽  
High Strength ◽  
Galvanized Steel ◽  
Tensile Shear Strength ◽  
Tensile Shear ◽  
Tensile Test Specimen ◽  
Metal Arc Welding

In this study, lap joint experiments were conducted using galvanized high-strength steel, SGAFH 590 FB 2.3 mmt, which was applied to automotive chassis components in the gas metal arc welding (GMAW) process. Zinc residues were confirmed using a semi-quantitative energy dispersive X-ray spectroscopy (EDS) analysis of the porosity in the weld. In addition, a tensile shear test was performed to evaluate the weldability. Furthermore, the effect of porosity defects, such as blowholes and pits generated in the weld, on the tensile shear strength was experimentally verified by comparing the porosity at the weld section of the tensile test specimen with that measured through radiographic testing.

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