Effect of a longitudinal magnetic field on arc motion and joint structure of a hollow stud

Article Metallurgy & Metallurgical Engineering

Investigations on the microstructure of drawn arc stud welds on structural steels by quantitative metallography

Oliver Braetz et al.

Summary: The drawn arc stud welding is widely used in steel construction. In this study, the metallurgy of low alloyed steel studs welded on different steel plates was analyzed, and it was found that the microstructures in the weld metal were very similar, while the heat-affected zone showed a typical quenching microstructure depending on the steel grade.

WELDING IN THE WORLD (2023)

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Article Chemistry, Physical

INVESTIGATION ON THE THERMAL BEHAVIOR OF FRICTION STUD WELDING OF DISSIMILAR ALUMINUM/MILD STEEL JOINTS

R. Tharmaraj et al.

Summary: The friction stud welding process, which converts mechanical energy to thermal energy at the interface of metals, is suitable for joining stud fasteners in various steel structure buildings and transportation equipment. However, there is currently no good thermal model for this process. In this study, a mathematical model is proposed and validated through experiments and numerical simulations, providing helpful insights for the design and manufacture of welding machines.

SURFACE REVIEW AND LETTERS (2022)

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Article Metallurgy & Metallurgical Engineering

Experimental investigations on the arc's physical aspects and their implications on weld bead morphology and microstructure in TIG welding with an external longitudinal magnetic field

Tiago Vieira da Cunha et al.

Summary: This study experimentally investigated the effects of applying an external longitudinal magnetic field on arc welding and found that both the intensity and direction of the magnetic field had an impact on the arc and weld properties.

WELDING IN THE WORLD (2022)

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Article Automation & Control Systems

Stud welding system using an industrial robot for membrane walls

Xudong Ji et al.

Summary: This paper presents a robotic stud welding system based on a light section sensor for a membrane wall. Real-time measurement of pipe poses using the sensor and real-time feedback to calculate and compensate for pipe offsets are implemented. The practicality of this system is verified in the production of a membrane wall, showing a 36.9% increase in efficiency compared to manual welding.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2022)

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Article Engineering, Manufacturing

Forming and weld grain growth behavior of arc stud welding driven by rotating magnetic field

Deku Zhang et al.

Summary: In this study, a method of arc hollow stud welding driven by external rotating magnetic field was proposed to address the issue of local non-fusion in medium and large diameter hollow stud welding. The rotating magnetic field was found to promote uniform burning of the arc and expansion of the molten pool, avoiding local unfused phenomenon and improving joint appearance. The rotating arc also stirred the molten pool, reducing undercooling and refining the grain size of the weld. The resulting magnetron stud welded joint exhibited high shear strength, impact toughness, and microhardness.

JOURNAL OF MANUFACTURING PROCESSES (2022)

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Article Engineering, Industrial

Arc shape and microstructural analysis of TIG welding with an alternating cusp-shaped magnetic field

Hong Wu et al.

Summary: This study found that changes in excitation current and frequency under an external alternating cusp-shaped magnetic field can affect the arc shape and microstructure during gas tungsten arc welding, leading to improved welding results under specific parameters.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2021)

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Article Metallurgy & Metallurgical Engineering

The behavior of TIG welding arc in a high-frequency axial magnetic field

H. Wu et al.

Summary: The study analyzes the effect of high-frequency axial magnetic field on TIG welding, with experimental results showing that the welding performance is optimized at a magnetic frequency of 1500 Hz, resulting in maximum depth-width ratio of the weld bead.

WELDING IN THE WORLD (2021)

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Article Automation & Control Systems