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ОСОБЛИВОСТІ ЗВАРЮВАННЯ КОМБІНОВАНИХ З’ЄДНАНЬ СТАЛЕЙ 15Х2М2ФБС (П3) ТА X10CrMoVNb91 (P91).

Authors :
Скульський, В. Ю.
Німко, М. О.
Гаврик, А. Р.
Осипенко, І. Г.
Вавілов, О. В.
Кантор, О. Г.
Рубашка, Л. П.
Source :
Automatic Welding / Avtomatitcheskaia Svarka. 2022, Issue 8, p20-28. 9p.
Publication Year :
2022

Abstract

Within the framework of currently urgent problem of reconstruction and restoration of equipment of thermal power units of TPP, work has been performed on development of basic technology of welding body elements of a steam turbine from low-alloyed 15Kh2M2FBS (P3) steel to branchpipes from high-chromium martensitic X10CrMoVNb91 steel with 9 % Cr (P91). The paper gives the results of determination of the thermal mode of welding such combined joints to prevent delayed fracture. Proceeding from study of the influence of different modes of high-temperature tempering on impact toughness of weld metal and hardness of welded joint areas hardened during welding, heat treatment modes were selected, depending on electrode material type. It is shown that the resultant mechanical properties of welded joints correspond to the requirements specified during work performance. 12 Ref., 5 Tabl., 9 Fig. [ABSTRACT FROM AUTHOR]

Details

Language :
Russian
ISSN :
0005111X
Issue :
8
Database :
Academic Search Index
Journal :
Automatic Welding / Avtomatitcheskaia Svarka
Publication Type :
Academic Journal
Accession number :
161021748
Full Text :
https://doi.org/10.37434/as2022.08.03