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Solid Materials: Joining Processes
Published in Leo Alting, Geoffrey Boothroyd, Manufacturing Engineering Processes, 2020
Submerged-arc welding has found its main applications with mild and low alloys steels, although it has been used for other materials as well. It is a method used mainly for downhand automatic/semiautomatic welding of thicknesses above 5 mm where the welds are long and straight. Flat butt welds or fillet welds are the most common joints produced. Ships, pressure vessels, large steel constructions, and storage tanks are typical fields of applications.
Process Costing
Published in Anoop Desai, Aashi Mital, Production Economics, 2018
In the casees of gas metal arc welding, gas tungsten arc welding, and in flux core arc welding (depending on whether it is used in this process), the shielding gas costs must be determined separately. In the case of submerged arc welding, the flux is used to shield the weld from exposure to the atmosphere. As a consequence, the cost of the flux must be included in this process.
Weld Design and Joining
Published in Zainul Huda, Manufacturing, 2018
Submerged Arc Welding: The SAW process involves formation of an invisible arc between a continuously fed bare wire electrode and the workpiece by using a flux to generate protective gases and slag, and to add alloying elements to the weld pool.
An evaluation of mechanical properties and estimation of environmental reduction factors in welded API X70 steel pipeline in natural seawater
Published in Welding International, 2023
Oyewole Adedipe, Abdulrahman Bala Gambo, Joseph Abutu, Oluwafemi Ayodeji Olugboji, Joseph Babalola Agboola, Kafayat Toyin Obanimomo, Asipita Salawu Abdulrahman
Submerged-arc welding process was preferred over other methods of welding because of its high reliability, deep penetration, and smooth finishing and high productivity. Five (5) welded samples were produced using similar welding conditions and the welding process involved feeding the tubular electrode (E7018) continuously using flat welding positions to join the two-steel plates by generating heat between electrode and metal plates. Selecting appropriate values for welding variables is essential in order to control bead size and quality of welded joint [28]. Hence, the welding parameters adopted for welding in this study was similar to those used by Akonyi et al. [35] who also investigated the performance of welded API X70 pipeline steel and revealed that wire diameter (4 mm) welding speed (0.5 m/min), wire speed (93 mm/min), voltage (29 V) and current (525 A) produced better results. A welded sample obtained from the welding process is shown in Figure 4.
Study on Proper Welding Condition for Ultranarrow Gap Submerged Arc Welding
Published in Welding International, 2021
Yohei Abe, Takahiro Fujimoto, Mitsuyoshi Nakatani, Masaya Shigeta, Manabu Tanaka
Due to its high deposition rate and high weld quality, submerged arc welding (SAW) is widely used for butt welding of the thick plates and extremely thick plates used in pressure vessels and other large steel structures. When SAW is used with thick and extremely thick plates, it is necessary to widen the groove angle to around 30° to prevent lack of fusion (LF) and other welding defects. When the groove angle is wide, the groove cross-sectional area increases and a long time is needed until build-up is complete.