Investigation of the Strength Parameters of Drilling Pumps during the Formation of Contact Stresses in Gears

Савинкин, В. В.; Kolisnichenko, Sergey N.; Sandu, Andrei Victor; Иванова, О. В.; Vizureanu, Petrică; Zhumekenova, Zaure Zhetpysbayevna

doi:10.3390/app11157076

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Research institutes, car-building plants, and metallurgical plants recommend the manufacture of wheel structures made of low-alloy steels with increased resistance to the formation of fatigue, the formation of thermal cracks, and increased wear resistance [60,61].…”

Section: Determination Of the Dependence Of Changes In Normal Contact Stresses On The Design Deviation Of The Wheel Wear Contact Areamentioning

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: Determination Of the Dependence Of Changes In Normal Contact Stresses On The Design Deviation Of The Wheel Wear Contact Areamentioning

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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Improvement of electrospark deposition technology of steel units for drilling rigs and mining equipment

Коротаев

Ivanova

2022

Izvestiya Vysshikh Uchebnykh Zavedeniy. Geologiya i Razvedka

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Introduction. The development of modern equipment and technologies for geological exploration and mining processes raises the problem of ensuring the reliability and durability of mechanic units operating under the conditions of elevated temperatures and pressures in the presence of aggressive external environments. In this regard, there is a need to create functional coatings with unique physical, mechanical and operational properties.Aim. To improve the performance of electrospark coatings based on an analysis of a cause-andeffect diagram and a regression study of the technological modes of processing steel units of geological exploration equipment (on the example of hydraulic cylinder rods of drilling pumps).Materials and methods. To harden the steel surfaces of hydraulic equipment parts, the technology of electrospark deposition (ESD) was used on an IMES-1001 mechanized installation using carbide electrodes and various gas media. In order to identify causal relationships between the factors affecting the hardened surface and to establish the most important factors affecting the quality of the formed coating, the Ishikawa diagram method was used and a regression analysis was performed. The adhesion activity of the obtained coatings was assessed by atomic force microscopy on a Solver PRO scanning probe microscope in a semi-contact air scanning mode using NSG10probe sensors with a resonance frequency of 219 kHz and a radius of curvature of the probe tip of 10 nm. When determining the strength of the adhesive interaction of the probe and the surface at one point, the absolute error was 15 nN. Tribological tests were carried out on a 2070-СМТ-1 standard friction machine according to the “disk-shoe” scheme.Results. The obtained cause-and-effect diagram showed that the technological modes of an electrospark deposition installation comprise a determining factor affecting the quality of the formed layers and coatings. In order to identify those process parameters that had the greatest effect, a regression analysis was carried out. The capacitance of the unit capacitors was found to have the greatest impact on the adhesion force formed by the ESD coating. Therefore, in order to reduce the strength of the adhesive interaction of surfaces and, as a result, increase their wear resistance, it is necessary to increase the capacitance of capacitors while reducing the voltage and processing time when implementing the ESD technology. On the basis of tribological tests, it is concluded that the minimum wear rate of coatings can be obtained by alloying the steel surface in an oxygen environment with a carbide electrode based on tungsten carbide with additives of elements that form unlimited solid solutions with the surface material and perform the role of fluxes (Ni-Cr-B-Si).Conclusion. Due to strict requirements to the performance of metal surfaces of units that enter into frictional interaction during the implementation of mining and exploration processes, there is a need to improve existing technologies for creating functional (wear-resistant) coatings.

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New Materials and Advanced Procedures of Obtaining and Processing—Applied Sciences Insights

Sandu

2023

Applied Sciences

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The present editorial highlights the publications presented in the Special Issue of Applied Sciences: New Materials and Advanced Procedures of Obtaining and Processing. The collection of articles managed to gather high-quality articles from various fields of applied sciences, with topics ranging from supercapacitors to strength parameters, from drug delivery systems to facial reconstruction, and from a Bronze Age pottery study to archaeometric evaluation.

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Investigation of the Strength Parameters of Drilling Pumps during the Formation of Contact Stresses in Gears

Cited by 3 publications

References 19 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 electrospark deposition technology of steel units for drilling rigs and mining equipment

New Materials and Advanced Procedures of Obtaining and Processing—Applied Sciences Insights

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