The Paton Welding Journal, 2019, №02



2019 №02 (07)

DOI of Article 10.15407/tpwj2019.02.01

2019 №02 (02)

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The Paton Welding Journal, 2019, #2, 7-12 pages
 
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #2, 2019 (March)
Pages 7-12

Delayed fracture resistance of welded joints of rotor steel 25Kh2NMFA after welding reheating

V.Yu. Skulsky¹, G.N. Strizhius¹, M.A. Nimko¹, A.R. Gavrik¹, A.G. Kantor² and A.V. Konovalenko²

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
²JSC «Turboatom» 199 Moskovsky Ave., 61037, Kharkov, Ukraine. E-mail: office@turboatom.com.ua

The work is dedicated to experimental investigation of influence of repeated thermal effects under conditions of manual arc welding of hardening heat-resistant steel on delayed fracture resistance of metal in HAZ region of earlier performed passes. Applicable to different schemes of temper bead deposition using Implant method there were determined quantitative characteristics of change of delayed fracture resistance. It is shown that obtained crack resistance in welding without preheating can be compared with resistance in welding with heating. Effect of reheating on change of structural and hydrogen factor, influencing crack formation was evaluated. 22 Ref., 7 Figures.
Keywords: hardening heat-resistant steel, welding reheating, delayed fracture, structural and hydrogen factors, Implant method, quantitative change of cracking resistance
 
Received: 14.01.19
Published: 11.03.19
 

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