Evaluation of Cutting Edges Made of Nanocrystalline Cemented Carbides Sintered by the Pulse Plasma Method

Kupczyk, Maciej Jan; Michalski, A.; Siwak, Piotr; Rosiński, M.

doi:10.1520/stp49440t

Cited by 2 publications

(5 citation statements)

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“…As a result of research on the phase composition of coatings produced using the pulse plasma method, it was also found that this method allows to obtain coatings with about 80% of superhard, c-BN variety (β-BN), necessary to increase the antiabrasion properties of the deposited coating on the cutting blade. 25,26…”

Section: Test Resultsmentioning

confidence: 99%

“…Images created by secondary electrons of the surfaces of composite boron nitride coatings obtained in the pulse plasma process at a discharge voltage: (a) 3.5 kV, (b) 4.0 kV, (c) 4.5 kV, (d) 5.0 kV, (e) 5.5 kV, and (f) 6.0 kV. 25 …”

Section: Test Resultsmentioning

confidence: 99%

“…22,23 He also defined the formula for the A k cracking work. Assuming that for the critical value of the load P k , the imprint depth is h k , and the diagonal of the imprint d k and the ratio h k / d k = 0.143 (similar to the Vickers hardness test), the fracture work can be determined from the relationship 24,25 : …”

Section: Conditions Of Investigationsmentioning

confidence: 99%

“…The pulse plasma method (Figure 2) 10,25 developed at the Faculty of Materials Science and Engineering of the Warsaw University of Technology was used to obtain coatings based on c-BN. The essence of this method is the use of electrical impulse discharges, as a result of which a highly ionized and nonisothermal plasma is generated.…”

Section: Conditions Of Investigationsmentioning

confidence: 99%

“…The capacitor bank is supplied from a direct current power supply with adjustable output voltage in the range from 0 to 10 kV. 10,25 In the same plate closing the chamber, in which the electrode current passages are located, there is an inlet for gases constituting the working atmosphere of the process. The inlet is in the axis of the chamber.…”

Section: Conditions Of Investigationsmentioning

confidence: 99%

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The use of a superhard boron nitride composite c-BN+h-BN with increased resistance to brittle cracking for anti-wear coatings

Kupczyk

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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In order to reduce the brittleness of boron nitride (BN) coatings while maintaining a sufficiently high abrasion resistance, a composite material consisting of a cubical (c-BN) and additionally hexagonal (h-BN) variety was produced, slightly lowering the hardness, but significantly increasing the fracture toughness of the coating. For this purpose, the pulse plasma method was used, which made it possible to produce such material. In the presented tests, BN was produced with this method at various voltage parameters of the process, examining the influence of this parameter on the susceptibility of coatings to brittle cracking, the value of the critical load and the work of fracture for an average total crack length of 300 µm. The Palmqvist’s method was used to assess the brittleness of the coatings. Through the use of different discharge voltage values, it was possible to obtain BN coatings with different structures and the share of chemical bonds. These studies contribute to the process of conscious design of coating materials with the most advantageous technological and operational properties. The final verification and selection of the variant of the anti-wear coating manufacturing process from the c-BN+h-BN composite material was made based on cutting ability tests. Based on cutting ability tests, diagrams of wear and durability of replaceable carbide inserts with composite coatings were determined for the assumed value of the blunting index VBmax = 0.7 mm.

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Section: Test Resultsmentioning

confidence: 99%

Section: Test Resultsmentioning

confidence: 99%

Section: Conditions Of Investigationsmentioning

confidence: 99%

Section: Conditions Of Investigationsmentioning

confidence: 99%

Section: Conditions Of Investigationsmentioning

confidence: 99%

See 3 more Smart Citations

The use of a superhard boron nitride composite c-BN+h-BN with increased resistance to brittle cracking for anti-wear coatings

Kupczyk

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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A Review on Tool Life in Coal Measures Rocks

Prakash

2024

jmmf

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Tungsten carbide inserts in rock drill bits are predominantly used in drilling rocks, particularly in mining industries. The research studies performed on drill bits have been limited to several factors such as collecting failure data of bit components from the field, conducting wear tests considering rock properties, and introducing new coated insert materials. The role of Artificial Intelligence (AI) and Machine Learning (ML) for the betterment of tool wear with real-time data is limited. The present study has offered an evaluative perspective of an essential industrial issue. In this review, a concept map presents a visual organization and representation of knowledge obtained during the study. Utilizing the propositions from the concept map, a brief review of the integrated concepts of researchers relating drill bits, failure data, numerical and statistical models, wear analysis, reliability assessment, and prerequisites in developing new materials have been discussed in the backdrop of the present study.

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Evaluation of Cutting Edges Made of Nanocrystalline Cemented Carbides Sintered by the Pulse Plasma Method

Cited by 2 publications

References 10 publications

The use of a superhard boron nitride composite c-BN+h-BN with increased resistance to brittle cracking for anti-wear coatings

The use of a superhard boron nitride composite c-BN+h-BN with increased resistance to brittle cracking for anti-wear coatings

A Review on Tool Life in Coal Measures Rocks

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