Improving the Efficiency of Antifriction Coatings by Means of Finishing the Antifriction Non-abrasive Treatment

Shepelenko, Ihor; Tsekhanov, Yuri; Nemyrovskyi, Yakov; Posviatenko, Eduard

doi:10.1007/978-3-030-40724-7_30

Cited by 6 publications

(5 citation statements)

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“…As noted in [16], the quality of the coating obtained by finishing antifriction non-abrasive treatment (FANT) mainly depends on the triggering of the following channels of contact surfaces activation: mechanical, chemical, thermal and vacancy-dislocation. At the same time, the authors of [17,18] substantiated the feasibility of forming favorable shapes and sizes of microroughness in previous FANT operations, for example, creating a regular microrelief by turning as one of the conditions for obtaining a quality coating.…”

Section: Resultsmentioning

confidence: 93%

Creation of new technological methods for surface engineering based on broaching

Shepelenko

Posviatenko

Nemyrovskyi

et al. 2022

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The article is devoted to the creation of new processing technologies through the use of drawing. It is determined that the most effective processes of surface engineering of machine parts are hybrid technologies. The advantages of such technologies due to obtaining a new effect from the impact on the part by two or more dissimilar processes belonging to one or different groups of surface engineering methods are noted. It is proved that the use of hybrid technologies on the basis of stretching allows to combine the advantages of different methods, first of all cold plastic deformation methods, in combination with others. The use of deforming drawing provides in the surface layer favorable for the part of the compressive residual stresses, increase the wear resistance of the surface, as well as the strength of the part. The results of the research allowed to classify the deforming drawing as a class of surface engineering methods. On the example of processing of cylinder liners of internal combustion engines the combined technology containing operations of deforming drawing and finishing antifrictional non-abrasive processing is developed. It is shown that the use of deforming drawing has significantly improved the quality of antifriction coating. The use of deforming drawing to the component of the hybrid method with the subsequent pulsed nitriding is considered.It is established that when nitriding cutting tool products, hybrid process modes should be set in order to create the most effective nitride zone. In the case of processing of road vehicle parts, special attention should be paid to obtaining a diffusion layer. The efficiency of the offered technologies on the basis of stretching is established. Determining the prospects for further use of deforming drawing as an integral part of hybrid technologies

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Section: Resultsmentioning

confidence: 93%

Creation of new technological methods for surface engineering based on broaching

Shepelenko

Posviatenko

Nemyrovskyi

et al. 2022

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“…At this stage of mechanical engineering development, various methods of applying coatings, which can be wear-resistant, anti-friction, corrosion-resistant, heat-resistant, etc., deserve the greatest attention of researchers [12]. Such coatings can be obtained by gas-thermal and mechano-thermal spraying, vacuum-condensation technologies, surfacing, galvanic and chemical deposition, enameling, plating, cladding, hot coating with metals, application of solid lubricants [13]. Having a number of advantages (thickness of 0.005÷5 mm; high level of physical-mechanical properties; worked out equipment and technological equipment), the coatings are still not sufficiently reliably held on the base, require finishing mechanical processing, and create a large gradient of harmful residual stresses.…”

Section: Literature Reviewmentioning

confidence: 99%

Methodology of technological design in the restoration of parts

Permyakov

Nemyrovskyi

Posviatenko

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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In the work, from the standpoint of a systematic approach, a methodology for technological design of repair and restoration of worn parts using methods to improve the quality of the working layer is proposed. For the stages of the product life cycle, solving the problem of extending the service life after repair and restoration of worn parts, a general scheme and structure of information support for technological design were developed using restoration methods that ensure and improve the quality of the working layer. A variant of the technological process for the restoration of cylinder liners from modified gray cast iron by a combination of surface plastic deformation (SPD) and finishing antifriction non-abrasive treatment (FANT) is proposed.

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“…Для змінювання площі контакту різці відрізнялися між собою довжиною L задньої поверхні. Передній кут γ всіх зразків призначався рівним 5 ° згідно з розробленими рекомендаціям [14]. Ширина задньої поверхні у всіх різців була рівною 3 мм.…”

Section: методика проведення дослідженьunclassified

“…Дослідження шорсткості поверхні після ФАБО і ДПР проводилися на втулках, виготовлених із сірого чавуну СЧ20. Внутрішня поверхня кожної із втулок підлягала розточуванню і нанесенню антифрикційного покриття ФАБО згідно з рекомендаціями [14]. Робоча зона установки для ФАБО показана на рис.…”

Section: методика проведення дослідженьunclassified

“…Отже, зі збільшенням площі задньої поверхні мікрорізця зменшується сплошність покриття.Дослідження впливу технологічних факторів на якість утворення антифрикційного покриття виконувалося також на модельних зразках (рис. 2) за розробленою методикою[14]. На рис.…”

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Improving the quality of antifriction coatings using plastic deformation

Shepelenko¹,

Nemyrovskyi²,

Posviatenko³

2022

Mech. Adv. Technol.

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One of the ways to solve the shortage of anti-friction materials based on copper is the creation of anti-friction coatings on the surface of parts made from domestic raw materials. The technology of applying anti-friction coatings by finishing anti-friction non-abrasive treatment on the working surfaces of cast-iron products is considered. The use of deforming broaching to improve the quality of the antifriction coating is proposed. The reserves for their improvement due to the creation of favorable shapes and sizes of microroughnesses in the operations preceding the coating are determined. The study of the contact interaction of the microroughness of the machined surface with the tool was carried out on model samples. The main regularities of the formation of an antifriction coating on a cast-iron surface are established depending on the initial microrelief and processing modes. The effectiveness of the use of deforming broaching when applying an antifriction coating is studied by changing the height parameter of roughness. The performed studies allowed us to propose various schemes of the technological process of applying anti-friction coatings by the friction-mechanical method using deforming broaching, depending on the technical requirements for the product.

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Improving the Efficiency of Antifriction Coatings by Means of Finishing the Antifriction Non-abrasive Treatment

Cited by 6 publications

References 1 publication

Creation of new technological methods for surface engineering based on broaching

Creation of new technological methods for surface engineering based on broaching

Methodology of technological design in the restoration of parts

Improving the quality of antifriction coatings using plastic deformation

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