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2025 №06 (03) DOI of Article
10.37434/as2025.06.04 		2025 №06 (05)

Automatic Welding 2025 №06


"Avtomatychne Zvaryuvannya" (Automatic Welding), #6, 2024, pp. 30-42

Actual problems of laser welding of thin-walled products made of corrosion-resistant high-alloy steels (Review)

Yu.V. Yurchenko

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. Е-mail: yurchenko@paton.kiev.ua

The paper reviews current scientific research on laser welding of thin-walled products made of corrosion-resistant steels. Particular attention is paid to problems affecting the quality of welded joints in products with thin walls. One such problem is the formation of craters at the end of the weld, which is often observed in the manufacture of girth welded joints. It has been established that an effective approach to reducing this defect is to use smooth regulation of the laser radiation power at the beginning and end of the welding process using different types of modulation, as well as overlapping the weld and performing an additional smoothing pass. Another important aspect is ensuring stable gas protection during welding in a narrow gap between the clamping elements. Design solutions that contribute to the formation of a laminar flow of shielding gas are considered, in particular the use of gas distribution elements made of sintered porous materials or metal meshes, which reduce the turbulence and improve the effectiveness of protecting the welding zone from atmospheric influences. The problem of deformations and residual stresses caused by the local influence of the heat source is analyzed separately. It has been established that the use of copper substrates, the optimal location of clamping elements, and the optimization of laser welding parameters can significantly reduce the level of thermal deformations and can ensure high geometric accuracy of joints. Based on the results of the review, the main problems of laser welding of thin-walled products made of corrosion-resistant high-alloy steels were identified, options for their solution were considered, and prospects for further research in these areas were outlined. 65 Ref., 1 Tabl., 9 Fig.
Keywords: laser welding, high-alloy corrosion-resistant steels, thin-walled products, welding problems, craters, gas shielding, deformationsОтримано


Received: 25.06.2025
Received in revised form: 08.10.2025
Accepted: 27.11.2025

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