TPWJ, 2019, #2, 29-34 pages
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #2, 2019 (March)
Methods and specimens for comparative investigations of fatigue resistance of parts with multilayer surfacing
I.A. Ryabtsev1, V.V. Knysh1, A.A. Babinets1, S.A. Solovej1 and I.K. Senchenkov2
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
S.P. Timoshenko Institute of Mechanics of the NAS of Ukraine,
3 Nesterova Str., 03057, Kyiv, Ukraine
The design of specimens and methods for experimental evaluation of fatigue life of multilayer deposited specimens at the cyclic mechanical loading were developed. The design of specimens simulates the design of real deposited parts, which allows performing a comparative evaluation of influence of chemical composition of the base metal and deposited layers, as well as technique and technology of surfacing separate beads or layers on their fatigue life. For investigations of fatigue life of specimens, the appropriate loading schemes were chosen, which with certain assumptions reproduce cyclic power loads characteristic for real parts: large-modulus gears, pressing screws of rolling mills, mill rolls, MCCB rollers, etc. The results of experimental investigations of the cyclic fatigue life of specimens according to the proposed methods are given. It was established that the developed investigation methods should be used for evaluation of the fatigue life of different parts when selecting materials, equipment and technology of restoration or manufacturing multilayer surfacing. 11 Ref., 1 Table, 8 Figures.
Keywords: arc surfacing, multilayer surfacing, fatigue testing methods, fatigue, cyclic fatigue life, design of multilayer specimen
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