Automatic Welding, 2025, №02

2025 №02 (05)

2025 №02 (07)

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"Avtomatychne Zvaryuvannya" (Automatic Welding), #2, 2024, pp. 45-50

Specifics of using pulsed arc and constant power arcs in 3D welding technologies

E.V. Shapovalov, A.S. Novodranov, V.M. Vashchenko, O.M. Savytskyi, D.D. Topchev

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: artur19940731@gmail.com

The paper presents the results of the study of the influence of the periodic action and constant power arcs in multilayer surfacing on the quality of the deposited metal. An anthropomorphic robot-based equipment complex with a machine vision system was used for the surfacing process. To ensure the high quality of surfacing, the robotic system is equipped with a machine vision system based on neural network technologies to detect surface defects. It is shown that each surfacing method has its own advantages. Owing to double thermocycling, multilayer surfacing using a periodic arc ensures a fine-grained structure in the deposited metal. Crystallisation layers are almost invisible. It was impossible to produce a monolithic structure in surfacing using a constant power arc, and the crystallisation layers were clearly visible. However, this method is characterised by higher efficiency due to the absence of pulses and pauses. Studies of mechanical properties have shown that in all cases the deposited low-carbon metal has high indices of ductility at sufficiently high strength. 14 Ref., 6 Tabl., 5 Fig.
Keywords: 3D technology, anthropomorphic robot, machine vision system, periodic arc, constant power arc


Received: 25.10.2024
Received in revised form: 21.01.2025
Accepted: 04.03.2025

References

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