Investigation of Regularities of the Processes of Formation of Surface Layers with Electroerosive Alloying. Part Ⅱ

Tarelnyk, Viacheslav; Гапонова, О. П.; Коноплянченко, Євген; Dovzhyk, М. Ya.

doi:10.15407/mfint.39.03.0363

Cited by 25 publications

(6 citation statements)

References 1 publication

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“…The studies of mass transfer process in the course of the CEC formation were performed on the specimens of steel 45 of the size of 10x10x8 mm. As a soft anti-friction metal, there was used indium, tin or copper being applied according to the conditions recommended in [29] (Table 1). The coating made of tungsten or hard alloy of BK8 grade was applied under various conditions (Table 2).…”

Section: Methodsmentioning

confidence: 99%

“…Paper [29] devoted to the method for determining cathode weight and size gains in the course of forming single-layer electrospark coatings is the information source being the closest to the solution of this problem. However, this technique cannot be used for the CEC wherein the cathode weight and size gains are formed in the course of alternately applying of soft anti-friction and hard wearresistant materials.…”

Section: Actual Problems Of Engineering Mechanicsmentioning

confidence: 99%

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Modeling Technological Parameters for Producing Combined Electrospark Deposition Coatings

Коноплянченко

Tarelnyk

Kozachenko

2019

MSF

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The paper represents a formalized methodology for solving the problem of creating fundamentally new materials, such as "base - coating" ones, which have increased surface wear resistance and relatively high strength and viscosity. Electrospark alloying (ESA) method is proposed as a process for depositing protective coatings on metal surfaces. There are considered the issues of improving the quality of the coatings formed by the ESA method. There is specified a feature of processing the surfaces having been treated with the use of the ESA method, which feature being associated with a relatively small thickness of the layers formed (tens of micrometers). Since to reduce the roughness of the surface, the process of grinding is difficult or even unacceptable to perform, it has been suggested to use the method of surface plastic deformation (SPD). One of the effective SPD methods for finishing the parts is a diamond smoothing process, which, in contrast to running-in with a ball or roller, allows processing the parts of very high hardness values. As a reserve to improve the quality of coatings formed by the ESA method, there is considered a process for producing combined electrospark deposition coatings (CEC) with hard wear-resistant and soft anti-friction metals integrated therein. There are represented the results of mass transfer process investigation performed at forming the CEC on the specimens of steel 45 with indium, tin and copper being used as soft antifriction metals, and tungsten and hard alloy of VK8 grade applied as wear-resistant materials. There is represented a mathematical model for calculating the main ESA technological parameters being necessary for forming the CEC and allowing to predict the weight gain (increase in weight) and size gain (increase in size) at the cathode (the part). It allows predicting the CEC main technological parameters for any electrode pair materials (substrate material and electrode materials making up the CEC).

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Section: Methodsmentioning

confidence: 99%

Section: Actual Problems Of Engineering Mechanicsmentioning

confidence: 99%

Modeling Technological Parameters for Producing Combined Electrospark Deposition Coatings

Коноплянченко

Tarelnyk

Kozachenko

2019

MSF

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“…The samples with a cross-section smaller 1 cm 2 are eli-gible to eliminate the crater effect, and the needle-like samples will minimize the normal component, while the samples large enough to capture the full trace of the beam will have a smaller tangent component. This data is also vital for development of new technologies of electro-erosion coating [10].…”

Section: The Samples Of Vt22 Alloy After Irradiations With Hceb the Numbers Represent The Number Of Applied Impulses After Completion Of mentioning

confidence: 99%

Modification Effects of Microsecond High Current Electron Beam Exposure on Titanium Vt22 Alloy

Donets¹,

Клепиков²,

Lytvynenko³

et al. 2019

Problems of Atomic Science and Technology

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Titanium VT22 alloy was irradiated in the TEMP-A accelerator with the high current electron beam with the energy of 350 keV, beam current of 2 kA, pulse length around 5 μs, and beam diameter of 45 mm. The irradiation was performed for three samples with 1 to 3 pulses separately. Numeric simulations of the temperature distributions in the targets were conducted using the thermoelastic ablation model. The microstructural and mechanical properties of the irradiated alloy were studied using microhardness testing, metallography and fractography analysis.

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“…In recent years, to improve the quality of surface layers applied to worn parts of machines, the method of electrospark alloying (ESA) has become increasingly popular. ESA is a process of interaction between the material of the anode and the cathode during unipolar transfer from the anode to the cathode, which is a workpiece [2,3]. The specific features of ESA that attract technologists are the locality of action, low energy costs, the absence of volumetric heating of the material, the strong connection of the applied material with the base, ease of automation and the absence of synthesis of toxic gases.…”

Section: Introductionmentioning

confidence: 99%

Mass Spectrometric Study of the Chemical Composition of the Gas Environment in the Zone of Electrospark Alloying

Loboda¹,

Zubko²,

Khursenko³

et al. 2023

J. Nano- Electron. Phys.

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The article presents the results of mass-spectrometric studies of changes in the composition of the air environment in the restoration area of worn-out working parts' surfaces obtained using a monopole gas mass spectrometer МХ7304. The restoration of worn working parts' surfaces was carried out by the traditional method of electric arc welding by surfacing in a protective argon environment on steel 12Х18Н10Т wearresistant coating with OK61.30 grade electrodes. The electrospark alloying method was also used using the Elitron-52A installation. As a result of the studies, it was found that no toxic gases appear in the composition of the air in the area of electrospark alloying. At the same time, the presence of a large amount of carbon dioxide CO2 and unstable nitric oxide NO was found in the composition of the air in the area of electric arc welding. Both of these gases are toxic even in small quantities. On the basis of the experimental results obtained, a conclusion was made about the environmental safety of the method of electric spark alloying in the restoration of worn working parts' surfaces in comparison with the traditional method of electric arc welding.

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Investigation of Regularities of the Processes of Formation of Surface Layers with Electroerosive Alloying. Part Ⅱ

Cited by 25 publications

References 1 publication

Modeling Technological Parameters for Producing Combined Electrospark Deposition Coatings

Modeling Technological Parameters for Producing Combined Electrospark Deposition Coatings

Modification Effects of Microsecond High Current Electron Beam Exposure on Titanium Vt22 Alloy

Mass Spectrometric Study of the Chemical Composition of the Gas Environment in the Zone of Electrospark Alloying

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