Technical Diagnostics and Non-Destructive Testing, 2025, №01

2025 №01 (05)

DOI of Article 10.37434/tdnk2025.01.06

2025 №01 (07)

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ы"Tekhnichna Diahnostyka ta Neruinivnyi Kontrol" (Technical Diagnostics and Non-Destructive Testing) #1, 2025, pp. 31-36

Development of a simplified process test for the evaluation of cold crack formation in welded joints

L.S. Zakharov, A.R. Havryk

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: leza45@gmail.com

A new weldability test has been developed that allows us to experimentally determine the critical preheating temperature required to prevent cold cracks in welded joints. The new geometry of the welded block allows combining bending stresses with normal transverse and longitudinal stresses, which increases the rigidity of the test. The design of the proposed test has a lower metal consumption and allows for its repeated use. The weldability of hardenable steels with different degrees of alloying was studied using the new test. The test results are consistent with those obtained in other studies of steel weldability and are recommended for production conditions. 20 Ref., 1 Tabl., 6 Fig.
Keywords: welded joints, cold cracks, welding tests

Received: 01.01.2024
Received in revised form: 04.12.2024
Accepted: 13.01.2025

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