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Information × Registration Number 0214U000468, 0113U004391 , R & D reports Title Development of calculating estimation procedure of the maximum allowable operational life of parts operating under cyclic thermo-mechanical loading and the influence of multiple reconstructive multi-layer surfacing on the resource popup.stage_title Head Senchenkov Igor Konstantinovich, Registration Date 06-03-2014 Organization S.P.Timoshenko Institute of Mechanics popup.description2 The object of investigation are residual SSS and durability of cylindrical parts under multilayer surfacing, combined cyclic thermomechanical operational loading and repeated restoring surfacing. The aim is to develop mathematical models and methods of calculation of SSS and durability of surfaced cylindrical parts during operation and repeated restoring surfacing. Theoretical studies were carried out on the basis of thermomechanics of inhomogeneous inelastic bodies, models of growing bodies, thermokinetic diagrams of austenite decomposition, model of isothermal fatigue life. For numerical simulation the finite element method was used. The calculation method for assessing the acceptable resource exploitation under conditions of multilayered multiple surfacing repair on the example of a cylindrical hot deformation punch of steel 40X with two-layer surfacing of the working face by steels 08KP or 12HMF and 25H5FMS is tested. Two schemes of repair were examined: 1) replacement of heat-resistant outer layer and 2) replacement both the sublayer and the outer layer. The criteria of selection of repair scheme was proposed. The results can be used to develop new technologies of multilayered multiple surfacing repair to increase part's share and total life time. Product Description popup.authors Карнаухов В.Г. Киричок І.Ф. Козлов В.И. Левон Л.Г. Оксенчук Н.Д Червінко О.П. Шевченко А.Ю. popup.nrat_date 2020-04-02 Close