Calculation of parameters of particles in a plasma jet and modeling of kinematic modes of spraying of wear resistant material

Sharifullin, S. N.; Trifonov, G. I.; Vyachina, I. N.

doi:10.1088/1742-6596/1058/1/012047

Cited by 6 publications

(1 citation statement)

References 2 publications

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“…В работе [16] были смоделированы уравнения скорости движения инструмента (распылителя) при плазменном напылении винтовой (v 1 ) и цилиндрической (v 2 ) поверхностей шнека При перемещении плазмотрона относительно винтовой и цилиндрической поверхности шнека напыляемый материал осаждается в виде полувалика. Поскольку шнек -крупногабаритная деталь, то формируемое композитное покрытие будет многорядным.…”

Section: Introductionunclassified

Study of quality criteria for two-phase iron-based composite coatings formed by plasma spraying

Zhachkin

Trifonov

Егорова

et al. 2021

Vestn. Voronež. gos. univ. inž. tehnol.

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The increasing relevance in the field of repair and restoration of machines and mechanisms is acquiring gas-thermal methods of applying functional coatings to the working surfaces of parts of machine assemblies. The purpose of gas-thermal coating methods is to provide and obtain special physical and mechanical properties of the surface of the part, as well as to restore worn-out components and mechanisms after their long-term and intensive operation. Plasma spraying of composite coatings is an effective method of gas-thermal treatment of the surface of a part. In this paper, a study was conducted on the optimal selection of material for plasma spraying of a part, taking into account its operational features and types of wear of working surfaces. In particular, the operating conditions of the screw of the conveying conveyor are analyzed. The technological features of the application of composite materials by plasma spraying technology are considered. The theoretical selection of a two-phase dispersed-filled composite for application to the working surfaces of the screw in order to restore and harden it has been carried out. Studies and analysis of one of the main indicators of the quality of the formed coating after plasma spraying – the magnitude of the resulting residual stresses (stretching and compression) have been carried out. Taking as a basis the kinematic modes and geometry features of the working surfaces of the screw, as well as the criteria for the formation of the thickness of the sprayed layer, the calculation equations for determining the residual stresses arising on the screw and cylindrical surfaces of the screw of the conveying conveyor are obtained. It is concluded that in order to achieve the required physical and mechanical properties of the coating, the volume fraction of the filler in the matrix of the PG-SR4 composite powder should be in the range of 20–25%. Therefore, it is possible to use in practice a particulate-filled composite of the NiСrВSiFе type with 20–25% reinforcing TiC filler particles in order to restore parts of machines and mechanisms.

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Section: Introductionunclassified

Study of quality criteria for two-phase iron-based composite coatings formed by plasma spraying

Zhachkin

Trifonov

Егорова

et al. 2021

Vestn. Voronež. gos. univ. inž. tehnol.

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Structure of the mathematical model of applying wear-resistant coatings by a high-frequency induction plasma of low pressure

Sharifullin

Akhmadullin

2019

J. Phys.: Conf. Ser.

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Annotation In this scientific work, we proposed a scheme for the transformation of a physical model of applying the HFI plasma coating to a mathematical one in a mathematical way by stepwise solving the problems of the structural model stages. The equations of conservation of energy of the electron gas, Maxwell, continuity and momentum will be used. It is planned to develop a mathematical model for sputtering dielectric and metallic materials. In this case, boundary conditions will be introduced for the discharge power, flow rate and gas types, pressure and design parameters of the plasma torch.

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The composition of alpha case of the titanium casting obtained in a ceramic mold based on MgO

Petrov

Lyakhovich

Кашапов

et al. 2019

J. Phys.: Conf. Ser.

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The X-ray photoelectron spectroscopy method has been used to study the alpha case formed on the surface of a titanium alloy during its casting into ceramic molds, based on a mixture of oxides of magnesium, silicon, calcium, and water glass, as a binder. It is established that the alpha case consists of mold metal oxides, titanium oxides and complex intermetallic compounds based on titanium and mold elements.

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Calculation of parameters of particles in a plasma jet and modeling of kinematic modes of spraying of wear resistant material

Cited by 6 publications

References 2 publications

Study of quality criteria for two-phase iron-based composite coatings formed by plasma spraying

Study of quality criteria for two-phase iron-based composite coatings formed by plasma spraying

Structure of the mathematical model of applying wear-resistant coatings by a high-frequency induction plasma of low pressure

The composition of alpha case of the titanium casting obtained in a ceramic mold based on MgO

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