Improving Ecological Safety when Forming Wear-Resistant Coatings on the Surfaces of Rotation Body Parts of 12Kh18N10T Steel Using a Combined Technology Based on Electrospark Alloying

Гапонова, О. П.; Лобода, В. Б.; Konoplyanchenko, E. V.; Марцинковский, В. С.; Семірненко, Юрій Іванович; Tarelnyk, Viacheslav; Mikulina, Maryna; Саржанов, Богдан Олександрович

doi:10.3103/s1068375521020113

Cited by 20 publications

(16 citation statements)

References 25 publications

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“…Sliding friction on the contact surfaces of solids at full pressure occurs in small areas of the so-called contact spots [28,29]. The total area of contact spots corresponds to the actual contact area, which is a small fraction of the nominal one.…”

Section: Resultsmentioning

confidence: 99%

Composition, Structure, and Properties of Ti, Al, Cr, N, C Multilayer Coatings on AISI W1-7 Alloyed Tool Steel

et al. 2022

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New methods of diffusion metallization of AISI W1-7 steel have been developed. The paper proposes a comparative analysis of the properties and characteristics of AISI W1-7 steel after three methods of chemical heat treatment: diffusion nitriding, nitrogen titration by physical deposition from the gas phase, and diffusion chromium plating with subsequent titanium alloys. The results are presented as a comprehensive analysis of coatings: metallographic, micro-X-ray spectral, X-ray phase, durometric, heat resistance, and wear resistance. It is established that multilayer protective coatings are formed as a result of treatments. It is shown that the coatings consist of carbide and nitride zones, intermetallic, and an Al2O3 layer outside the coating. The coatings have been found to contain barrier layers that prevent aluminum from penetrating the substrate. The maximum microhardness is typical for layers based on titanium carbide—30.3–35.5 GPa and titanium nitride—22.0–22.6 GPa, heat-resistant steels AISI W1-7 at a temperature of 900 °C in 4.2–8.5 times and wear resistance under sliding friction without lubrication up to 5.4 times compared to samples without treatment.

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Section: Resultsmentioning

confidence: 99%

Composition, Structure, and Properties of Ti, Al, Cr, N, C Multilayer Coatings on AISI W1-7 Alloyed Tool Steel

et al. 2022

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“…All cutting tools are installed in advance when setting up the machine, and in the process of processing, they are put into operation one by one. After each working stroke, the turret head is turned, and the working position is occupied by a new cutting tool [1][2][3][4][5].…”

Section: Problem Formulationmentioning

confidence: 99%

“…An automatic machine is a machine in which all the main and auxiliary movements necessary for the cycle of workpiece processing are automated, including loading and dispensing of the processed part. The worker should only periodically load a batch of blanks or bars and periodically control the dimensions of the parts [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Analysis Of Recent Research and Publicationsmentioning

confidence: 99%

Innovative Methods of Expanding the Functional Capabilities of the Single-Spindle Lathe

Veselovska,

Kosakovskyi,

Romanov

2023

Engineering, Energy, Transport Aic

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Turret lathes, which are automated turret machines, are widely used in large-scale and mass production. The use of automatic machines in small-scale production, which has a significant specific weight in instrument construction, was considered inadvisable until recently due to the fact that their reconfiguration takes a lot of time. Currently, thanks to the expansion of processing methods, which allow with minimal time consumption to go from the production of one part to the production of another part of the same group, automatic machines are increasingly used in small-scale production. The introduction of innovative methods to expand the technological capabilities of machines should go not only by increasing the accuracy of processing, a wider use of the expansion of functionality can be realized by equipping with auxiliary devices that can perform operations that improve the production of parts. One of the ways to improve the productivity of the automatic lathe is to use shaped cutters, which allow you to process the part faster and with better quality, and with the help of developing a methodology for calculating and adjusting the cams. The expansion of the technological capabilities of automatic machines should not only go by increasing the accuracy of processing, a wider use of the expansion of functional capabilities can be realized by equipping them with auxiliary devices that can perform such operations that improve production. One of the ways to improve the productivity of the automatic lathe is to use shaped cutters, which allow you to process the part faster and with better quality, and with the help of developing a methodology for calculating and adjusting the cams. Therefore, the topic of the article is relevant.

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“…In addition, the ESA coatings always consist of unique structures (nano-, subfine-crystalline, amorphous ones, etc.) due to a significant cooling rate of about 10 5 to 10 6 • K/s, which can improve the properties of the coatings [25,26]. Moreover, the ESA process is also a simple, cost-effective, and environmentally safe technology that is used in mechanical engineering, chemistry, medicine, aerospace, military industry, etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Structure and Properties of MoS2 Coatings Obtained by Electrospark Alloying

Haponova,

Tarelnyk,

Mościcki

et al. 2024

Coatings

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Electrospark coatings alloyed with MoS2 have been studied. The coatings were obtained by the following two strategies: the first consisted of pre-applying molybdenum disulfide to the treated surface and alloying with a molybdenum electrode (Mo + MoS2 coating); the second consisted of applying a paste with a sulfur content of 33.3% to the treated surface and alloying with a molybdenum electrode (Mo + S coating). The structure, phase composition, and tribological properties of the coatings were investigated. The coatings have a complex structure consisting of an upper soft layer, a hardened white layer, a diffusion zone, and a substrate. Element analysis and cross-sectional hardness changes indicated that element diffusion occurred at the coating/substrate interface. The phase composition of the coatings is represented by BCC and FCC solid solutions on Fe, and MoS2 is also detected. In Mo + S coatings, the molybdenum disulfide on the surface is about 8%; in Mo + MoS2 coatings, it is 27%–46%. The obtained coatings show very good tribological properties compared to molybdenum ESA coatings. The frictional forces and coefficients are reduced by a factor of 10 and 40, depending on the test conditions.

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Improving Ecological Safety when Forming Wear-Resistant Coatings on the Surfaces of Rotation Body Parts of 12Kh18N10T Steel Using a Combined Technology Based on Electrospark Alloying

Cited by 20 publications

References 25 publications

Composition, Structure, and Properties of Ti, Al, Cr, N, C Multilayer Coatings on AISI W1-7 Alloyed Tool Steel

Composition, Structure, and Properties of Ti, Al, Cr, N, C Multilayer Coatings on AISI W1-7 Alloyed Tool Steel

Innovative Methods of Expanding the Functional Capabilities of the Single-Spindle Lathe

Investigation of the Structure and Properties of MoS2 Coatings Obtained by Electrospark Alloying

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