Temperature monitoring of milling processes using a directional-spectral thermal radiation heat transfer formulation and thermography

Moreira, Matheus de Oliveira; Abrão, Alexandre Mendes; Ferreira, Rafael A.M.; Porto, Matheus P.

doi:10.1016/j.ijheatmasstransfer.2021.121051

Cited by 17 publications

(1 citation statement)

References 31 publications

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“…Although temperature monitoring via the Seebeck effect or IR sensors does provide good approximations of the real surface temperature, both involve considerably elaborate setups. Temperature monitoring with thermographic cameras is very sensitive to the emissivity of materials, which depend on multiple factors like surface roughness, measurement angle and even the temperature of the surface being measured [ 6 ]. Hence, an accurate measurement can only be attained if the emissivity of the object being measured is well known throughout each specific range of varying machining conditions [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Boron Doped Diamond for Real-Time Wireless Cutting Temperature Monitoring of Diamond Coated Carbide Tools

et al. 2021

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Among the unique opportunities and developments that are currently being triggered by the fourth industrial revolution, developments in cutting tools have been following the trend of an ever more holistic control of manufacturing processes. Sustainable manufacturing is at the forefront of tools development, encompassing environmental, economic, and technological goals. The integrated use of sensors, data processing, and smart algorithms for fast optimization or real time adjustment of cutting processes can lead to a significant impact on productivity and energy uptake, as well as less usage of cutting fluids. Diamond is the material of choice for machining of non-ferrous alloys, composites, and ultrahard materials. While the extreme hardness, thermal conductivity, and wear resistance of CVD diamond coatings are well-known, these also exhibit highly auspicious sensing properties through doping with boron and other elements. The present study focuses on the thermal response of boron-doped diamond (BDD) coatings. BDD coatings have been shown to have a negative temperature coefficient (NTC). Several approaches have been adopted for monitoring cutting temperature, including thin film thermocouples and infrared thermography. Although these are good solutions, they can be costly and become impractical for certain finishing cutting operations, tool geometries such as rotary tools, as well as during material removal in intricate spaces. In the scope of this study, diamond/WC-Co substrates were coated with BDD by hot filament chemical vapor deposition (HFCVD). Scanning electron microscopy, Raman spectroscopy, and the van der Pauw method were used for morphological, structural, and electrical characterization, respectively. The thermal response of the thin diamond thermistors was characterized in the temperature interval of 20–400 °C. Compared to state-of-the-art temperature monitoring solutions, this is a one-step approach that improves the wear properties and heat dissipation of carbide tools while providing real-time and in-situ temperature monitoring.

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Section: Introductionmentioning

confidence: 99%

Boron Doped Diamond for Real-Time Wireless Cutting Temperature Monitoring of Diamond Coated Carbide Tools

et al. 2021

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Influence of mechanical grinding on the formation of native passive layers on aluminum alloys

Schneider,

Langklotz,

Kühne

et al. 2024

Materials & Corrosion

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Mechanical grinding creates mechanical as well as thermal stress in treated material and the so‐called Beilby layer is formed. The present work investigates the influence of abrasive coarse grain size on the thickness and electrochemical behavior of the native oxide layer formed after the grinding process by using cyclovoltammetry. The difference in the native oxide layer thickness amounts to Δd ≈ 0.5 nm under the surface conditions investigated. Additionally, an experimental design is introduced and tested, which allows the operando measuring of the temperature of the material during the grinding process. Estimates result in a thermal stress Δσ between 0.8 and 1.3 MPa depending on the chosen grinding parameters and influence the subsequently formed oxide layer thickness.

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Cutting temperature measurement and prediction in machining processes: comprehensive review and future perspectives

Guimarães

Fernandes²,

Figueiredo³

et al. 2022

Int J Adv Manuf Technol

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Temperature monitoring of milling processes using a directional-spectral thermal radiation heat transfer formulation and thermography

Cited by 17 publications

References 31 publications

Boron Doped Diamond for Real-Time Wireless Cutting Temperature Monitoring of Diamond Coated Carbide Tools

Boron Doped Diamond for Real-Time Wireless Cutting Temperature Monitoring of Diamond Coated Carbide Tools

Influence of mechanical grinding on the formation of native passive layers on aluminum alloys

Cutting temperature measurement and prediction in machining processes: comprehensive review and future perspectives

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