Simulation-based evaluation of the 3D fluid dynamics of a coolant lubricant in the narrow-closed cutting gap during circular sawing

Tismer, Alexander; Menze, Christian; Straub, Patrick; Stegmann, Jan; Riedelbauch, Stefan; Möhring, Hans‐Christian; Kabelac, Stephan

doi:10.1016/j.procir.2023.03.068

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…Figure 14 shows an experimental setup for investigating the flow properties and the interaction of the chip with a cooling lubricant during circular sawing. The overall process was reduced in complexity here [37]. This included a simplification of the kinematics.…”

Section: Circular Saw With Internal Coolant Supply-ics (Spp 2231-tp09)mentioning

confidence: 99%

Flow Visualisation and Evaluation Studies on Metalworking Fluid Applications in Manufacturing Processes—Methods and Results

Fritsching,

Buss,

Tonn

et al. 2023

Processes

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Metalworking operations rely on the successful application of metalworking fluids (MWFs) for effective and efficient operation. Processes such as grinding or drilling often require the use of MWFs for cooling, lubrication, and chip removal. Electrochemical machining processes require electrolyte flow to operate. However, in those machining operations, a fundamental understanding of the mode of action of MWF is lacking due to the unknown flow dynamics and its interaction with the material removal during the process. Important information on the behaviour of MWFs during machining can be obtained from specific experimental flow visualisation studies. In this paper, promising flow visualisation analysis techniques applied to exemplary machining processes (grinding, sawing, drilling, and electrochemical machining) are presented and discussed. Shadowgraph imaging and flow measurements, e.g., particle image velocimetry, allow the identification of typical flow and MWF operating regimes in the different machining processes. Based on the identification of these regimes, efficient machining parameters and MWF applications can be derived. In addition, detailed experimental analyses of MWFs provide essential data for the input and validation of model development and numerical simulations within the Priority Programme SPP 2231 FluSimPro.

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Section: Circular Saw With Internal Coolant Supply-ics (Spp 2231-tp09)mentioning

confidence: 99%

Flow Visualisation and Evaluation Studies on Metalworking Fluid Applications in Manufacturing Processes—Methods and Results

Fritsching,

Buss,

Tonn

et al. 2023

Processes

Self Cite

View full text Add to dashboard Cite

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Assessment of the Heat Transfer Conditions in the Cavity of a Rotating Circular Saw

Stegmann,

Baumert,

Kabelac

et al. 2024

Energies

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To improve machining processes concerning the usage of lubricants, knowledge of the thermo-mechanical and thermo-fluid interactions at the cutting zone is of great importance. This study focuses on the description of the convective heat transfer which occurs during circular sawing when the lubricant is provided via an internal coolant supply. The highly complex flow field inside the cavity of the sawing process is separated into two distinct flow forms, an impingement and a channel flow. With the aid of experimental and numerical studies, the heat transfer characteristics of these two flow forms have been examined for water and a lubricant used in the circular sawing process. Studies have been conducted over a wide range of Reynolds numbers (impingement flow: 2×103<Re<17×103, channel flow: 1×103<Re<30×103). Additionally, the variation in the inlet temperature of the fluid, as well as the variation in heating power, has been studied. Overall, the impingement flow yields a significantly higher heat transfer than the channel flow with Nußelt-numbers ranging from 120 to 230, whereas the Nußelt-numbers in the case of the channel flow range from 20 to 160. For both flow forms, the use of the lubricant results in a better heat transfer compared with the usage of water. With the aid of these studies, correlations to describe the heat transfer have been derived. The provided correlations are to be used in a coupled numerical model of the chip formation process which also includes the effects of the heat transfer to the coolant lubricant.

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Simulation-based evaluation of the 3D fluid dynamics of a coolant lubricant in the narrow-closed cutting gap during circular sawing

Cited by 2 publications

References 12 publications

Flow Visualisation and Evaluation Studies on Metalworking Fluid Applications in Manufacturing Processes—Methods and Results

Flow Visualisation and Evaluation Studies on Metalworking Fluid Applications in Manufacturing Processes—Methods and Results

Assessment of the Heat Transfer Conditions in the Cavity of a Rotating Circular Saw

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