Avtomaticheskaya Svarka (Automatic Welding), #2, 2019, pp. 36-42
Methods and specimens for comparative studies of fatigue resistance of parts with multilayer surfacing
I.A. Ryabtsev1, V. V. Knysh1, A.A. Babinets1, S.A. Solovey1, I.K. Senchenkov2
E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine.
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 the fatigue life of multilayer deposited specimens under cyclic mechanical loading were developed. The design of specimens imitates the design of real deposited parts, which allows performing a comparative evaluation of the influence of chemical composition of the base metal and deposited layers, as well as methods and technology of surfacing separate beads or layers on their fatigue life. For studies of fatigue life of specimens, the corresponding loading schemes were chosen, which with certain assumptions reproduce cyclic power loads characteristic for real parts: large-scale gears, pressing screws of rolling mills, mill rolls, MCCB rollers, etc. The results of experimental studies of the cyclic life of specimens by 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 choosing materials, equipment and technology of restorative or manufacturing multilayer surfacing. 11 Ref., 1 Tabl., 8 Fig.
arc surfacing, multilayer surfacing, fatigue testing method, fatigue, cyclic durability, structure of multilayer specimen
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