Influence of low temperature on structure and impact strength of structural steels welded joints

The article is devoted to the study of the relationship between climatic conditions of construction, installation and repair during the operation of industrial technical systems and the structure and properties of welded joints of structural steels. It has been established that the main technologica...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020-05, Vol.1546 (1), p.12068
Main Authors: Saraev, Yu N, Golikov, N I, Maksimova, E M, Sidorov, M M
Format: Article
Language:English
Subjects:
Arc heating
Arc welding
Crystallization
Frequency ranges
Impact strength
Low temperature
Mechanical properties
Structural steels
Weld metal
Welded joints
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Summary:The article is devoted to the study of the relationship between climatic conditions of construction, installation and repair during the operation of industrial technical systems and the structure and properties of welded joints of structural steels. It has been established that the main technological factor affecting the crystallization of the weld metal from the melt is the heat input transmitted by the heating source - an electric arc, during welding at all intervals of the formation of one-piece joints. The research results made it possible to justify the conditions under which the formation of one-piece compounds occurs. The frequency ranges of controlled heat input, that maintain a specified set of welded joints mechanical properties are determined.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1546/1/012068