Study on the optimal phase structure of recovered steam turbine blades using different technological spray modes for deposition of Al2O3

Савинкин, В. В.; Ratushnaya, Tatyana Yu.; Ivanischev, Andrey A.; Surleva, Andriana; Иванова, О. В.; Kolisnichenko, Sergey N.

doi:10.1063/1.5118030

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…However, they have significant disadvantages such as lower strength and operational reliability, higher costs for the formation of wheelsets, and greater weight (by 36 kg for wheels with a diameter of 950 mm). Therefore, tyred wheels are being replaced by steel, tyreless all-rolled wheels [55].…”

Section: Discussion Of the Results Of Fatigue Stress Distribution Simulation For Worn Wheel Contact Elementsmentioning

confidence: 99%

Study of Wear and Redistribution Dynamic Forces of Wheel Pairs Restored by a Wear-Resistant Coating 15Cr17Ni12V3F

et al. 2021

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The relevance of this study lies in the need to research the wear process of the elements of dynamic systems and to establish the dependence of the geometric and structural characteristics of wheels restored by plasma surfacing with a coating of 15Cr17Ni12V3F on dynamic, cyclically varying loads. The study was aimed to establish the dependencies between the deviation of the wear area, the formation of contact and fatigue stresses, and the change in the phase structure of the wheel defect. It is important to justify the permissible limits of wear of the transverse profile in the contact zone of a wheel and ridge. The object of the study was the dynamic interaction of the “wheel–ridge–rail contact surface” system. To achieve the goal, the following methodology was adopted: kinematic analysis, strength calculation, the use of mathematical analysis in dynamic system modelling, virtual modelling in the SOLIDWORKS software environment of the GearTrax application, experiment planning, and model correction through the results of metallographic studies. The results of the study are presented as reasonable prediction criteria that consider contact cycles during the formation of fatigue stresses at the stage of defect origin. The process of the dynamic interaction of the contact worn profile of a wheel with a railway rail is explored. Polynomial equations are proposed to substantiate the optimal design and technological parameters of designing a railway carriage wheel. The permissible limits of wear of the transverse profile in the contact zone of the wheel and the ridge are justified while taking the coefficient of the reduction of contact stresses in the metal into account. The dependences of the change in static load on the utilization factor of the railway carriage load capacity are established. The dependences of changes in fatigue stresses on the design deviation of the contact area of wheel wear are established. It is confirmed that the stress concentration under cyclic loads is formed in the ferritic layers of the material structure before the appearance of wear.

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Section: Discussion Of the Results Of Fatigue Stress Distribution Simulation For Worn Wheel Contact Elementsmentioning

confidence: 99%

Study of Wear and Redistribution Dynamic Forces of Wheel Pairs Restored by a Wear-Resistant Coating 15Cr17Ni12V3F

et al. 2021

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“…The reliability of the results of the study was determined based on the application of non-destructive testing methods (metal magnetic memory method) and metallographic studies with subsequent construction of diffractograms of the heterogeneous material structure [23,24]. In the course of the study, the measuring instrument IKN-7M-16 was used, with a relative error of the measured magnetic field for each measurement channel of not more than ± 5% and a relative error of the measured length not more than ±5% [25].…”

Section: Of 15mentioning

confidence: 99%

“…Production experience and the main results of the study on the renovation of blades allowed for development of a structured model of a reasonable choice of technology for the recovery of substandard CHP turbine blades by spraying ( Figure 1) [23][24][25][26]. -surface roughness of the area with erosion-corrosion changes, µm.…”

Section: Of 15mentioning

confidence: 99%

Improvement of the Turbine Blade Surface Phase Structure Recovered by Plasma Spraying

et al. 2020

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This paper presents the results of research on the construction, technological parameters and criteria that control the process of formation of optimal phase structure of austenitic- and martensitic-class material for steam turbine blades. The hypothesis that the established correlation could increase the quality of blade recovery and its resistance against dynamic and vibrational loads was proved. The efficiency of the developed implantation method for the recovery of steam turbine blades was demonstrated. The optimal technological parameters of the process of laser plasma recovery were established empirically, allowing the development of the system for the fine tuning of the phase composition of austenitic- and martensitic-class steel.

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The effect of antifreeze reagent on seasonal frozen soils

Zhussupbekov¹,

Montayeva²,

Montayev³

2021

PEN

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Study on the optimal phase structure of recovered steam turbine blades using different technological spray modes for deposition of Al2O3

Cited by 4 publications

References 5 publications

Study of Wear and Redistribution Dynamic Forces of Wheel Pairs Restored by a Wear-Resistant Coating 15Cr17Ni12V3F

Study of Wear and Redistribution Dynamic Forces of Wheel Pairs Restored by a Wear-Resistant Coating 15Cr17Ni12V3F

Improvement of the Turbine Blade Surface Phase Structure Recovered by Plasma Spraying

The effect of antifreeze reagent on seasonal frozen soils

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