Wear of carbide inserts with complex surface treatment when milling nickel alloy

Fedorov, S. Yu.; Swe, Min Htet; Kapitanov, Alexey; Егоров, С. А.

doi:10.1051/meca/2017053

Cited by 9 publications

(7 citation statements)

References 33 publications

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“…The experimental results demonstrated the feasibility of creating wear-resistant near-surface layers by electron-beam technology using a source of wide-aperture low-energy high-current electron beam (LEHCEB) [1]. Such layers were obtained by initiating exothermic chemical reactions between the substrate material and the film deposited on it with the formation of new phase components [2][3][4].…”

Section: Introductionmentioning

confidence: 92%

Control of the surface electron-beam alloying process by vibration monitoring

Fedorov¹,

Kozochkin²,

Stebulyanin³

2018

Mechanics & Industry

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The experimental results prove the ability to realize technology of chemical heat treatment of some materials by surface alloying using a wide-aperture low-energy high-current electron beam. Doped hardened layers were produced due to initiating exothermic chemical reactions between the base and the thin film covered on it. Nevertheless, it is quite difficult to control the process of surface electron-beam alloying due to the significant variation in the parameters of the microsecond electron beam pulse and the instability of its interaction with the processed material. It leads to significant random changes that occur spontaneously, regardless of the control system. In this situation, it is proposed to use the method based on monitoring of oscillations and acoustic emission, which has long proved to be an effective tool in the study of phase transformations and plastic deformation. The appearance of a process with high vibroacoustic activity under irradiation of plates made of pre-nitrated steel 08Cr17Ti with a deposited film Nb70Hf22Ti8 in the range of 11–22 kHz 10 ms after the electronic pulse was experimentally shown on this background. The source of this vibroacoustic signal is a change in the microstructure of the alloy, including the appearance of a martensitic component in the near-surface layer of the sample caused by the formation of nitride based on niobium. Tracking changes in the effective value of the vibroacoustic signal allow choosing the rational modes of irradiation with electron-beam surface alloying, involving the supply of maximum power, limited by the possibility of evaporation of the film with alloying components.

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Section: Introductionmentioning

confidence: 92%

Control of the surface electron-beam alloying process by vibration monitoring

Fedorov¹,

Kozochkin²,

Stebulyanin³

2018

Mechanics & Industry

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“…These factors also include the magnitude of the charging voltage, on which the specific energy of the beam depends; the law of the distribution of beam energy over the irradiated surface; the thickness of the film with doping components deposed using magnetron sputtering; a number of processing cycles, etc. Their optimization is carried out based on metallographic, X-ray, and spectral studies [ 39 ] conducted after processing.…”

Section: Physical Phenomena the Kinetics Of Which Is Studied By Contr...mentioning

confidence: 99%

“…It is not easy to find information in the literature on methods for monitoring processes that occur in vacuum chambers during electron beam doping. The use of VA signals for monitoring processes in vacuum chambers was first proposed in [ 35 , 39 , 41 ]. It was proposed to use a waveguide connecting the processing zone and exiting the chamber through a vacuum inlet to register the VA signals accompanying the processes in the material surface layer after the electron pulse is supplied [ 35 ].…”

Section: Physical Phenomena the Kinetics Of Which Is Studied By Contr...mentioning

confidence: 99%

Investigation of the Information Possibilities of the Parameters of Vibroacoustic Signals Accompanying the Processing of Materials by Concentrated Energy Flows

Grigoriev

Kozochkin

Porvatov

et al. 2023

Sensors

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Creating systems for monitoring technology processes based on concentrated energy flows is an urgent and challenging task for automated production. Similar processes accompany such processing technologies: intensive thermal energy transfer to the substance, heating, development of the melting and evaporation or sublimation, ionization, and expansion of the released substance. It is accompanied by structural and phase rearrangements, local changes in volumes, chemical reactions that cause perturbations of the elastic medium, and the propagation of longitudinal and transverse waves in a wide frequency range. Vibrational energy propagates through the machine’s elastic system, making it possible to register vibrations on surfaces remotely. Vibration parameters can be used in monitoring systems to prevent negative phenomena during processing and to be a tool for understanding the processes’ kinetics. In some cases, it is the only source of information about the progress in the processing zone.

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“…A modified layer is created on the surface using electron beam alloying technology due to the initiation of exothermic chemical reactions between the carbide substrate and the thin film deposited on it. The use of such technology and the application of a wear-resistant coating can significantly increase the tool’s durability, and the effect is most noticeable in intensive cutting modes when the stresses arising in the cutting-edge zone reach values close to the strength limit of a hard alloy [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

The Study of Radius End Mills with TiB2 Coating When Milling a Nickel Alloy

et al. 2023

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Nickel alloy high-speed processing technology using ball-end mills is characterized by high contact temperature and leads to accelerated tool wear. One of the effective ways to increase its reliability and service life is to modify the surface by applying functional antifriction layers in addition to wear-resistant coatings. Diamond-like carbon is often used as the latter. However, at cutting speed, when a cutting-edge temperature exceeding 650 °C is reached, the material of this coating reacts actively with oxygen in the air, and the sharply increasing adhesive component of wear quickly incapacitates the milling tooth, limiting its performance. Applying a coating of titanium diboride as an antifriction layer on top of nanocrystalline composite nitride coatings with good resistance to abrasive wear can be a solution to this problem. Our experiments have shown that such technology makes it possible to obtain a twofold increase in durability compared to a tool with a diamond-like antifriction coating in conditions when the cutting edge of the tool is subjected to cyclic thermal shocks above 800 °C, and the durability period of the radius end mill is about 50 min.

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Wear of carbide inserts with complex surface treatment when milling nickel alloy

Cited by 9 publications

References 33 publications

Control of the surface electron-beam alloying process by vibration monitoring

Control of the surface electron-beam alloying process by vibration monitoring

Investigation of the Information Possibilities of the Parameters of Vibroacoustic Signals Accompanying the Processing of Materials by Concentrated Energy Flows

The Study of Radius End Mills with TiB2 Coating When Milling a Nickel Alloy

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