Journal
MATERIALS
Volume 14, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/ma14123176
Keywords
cutting temperature; coated tool; Laplace transform; non-Fourier heat conduction; transient heat conduction
Categories
Funding
- National Natural Science Foundation of China [51905286, 52075276]
- Key Research and Development Plan of Shandong Province [2019GGX104052]
- Project for the Innovation Team of Universities and Institutes in Jinan [2018GXRC005]
- Major Innovation Project of Shandong Province [2019JZZY020323]
- Science and Technology Program of Shandong University [J18KA032]
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The cutting heat conduction process goes through three stages: intensity transient-state, transient-state, and steady-state. When using coated cutting tools, the cutting heat needs to pass through thin coatings and flow into the tool body, showing non-Fourier heat conduction characteristics. A new analytical model based on non-Fourier heat conduction was proposed to characterize thermal shock, showing that non-Fourier heat conduction is more suitable for intensity transient-state and transient-state in cutting heat conduction.
Cutting heat conduction undergoes three stages that include intensity transient-state, transient-state, and steady-states. Especially during machining with coated cutting tools, in the conduction process, cutting heat needs to pass through a few micron thick coatings and then flow into the tool body. This heat conduction presents typical non-Fourier heat conduction characteristics. This paper focuses on the cutting temperature in transient heat conduction with a coated tool. A new analytical model to characterize the thermal shock based on the non-Fourier heat conduction was proposed. The distribution of cutting temperature in mono-layer coated tools during the machining was then illustrated. The cutting temperature distribution predicted by the Fourier heat conduction model was employed to compare with that by non-Fourier heat conduction in order to reveal the non-Fourier heat conduction effect in transient heat conduction. The results show that the transient heat conduction analytical model is more suitable for the intensity transient-state and transient-state in the process of cutting heat conduction.
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