Interfacial heat transfer under mixed lubrication condition for metal rolling: A theoretical calculation study
| Autor: | Aitao Tang, Xiao-ping Liang, Fu-sheng Pan, Jian-qing Wu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Metallurgy Oxide Energy Engineering and Power Technology Thermal contact 02 engineering and technology Heat transfer coefficient 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering chemistry.chemical_compound 020303 mechanical engineering & transports 0203 mechanical engineering chemistry Heat transfer Lubrication Lubricant Composite material 0210 nano-technology Material properties Contact area |
| Zdroj: | Applied Thermal Engineering. 106:1002-1009 |
| ISSN: | 1359-4311 |
| Popis: | Interfacial heat transfer, as an important factor in rolling process, can significantly affect the roll conditions and the product qualities. However, the heat transfer behavior at the roll-strip interface is highly unclear because of various factors including material properties, contact conditions, surface qualities, etc. It is important to gain an insight into the interfacial heat transfer to clarify the heat transfer characteristics in the work zone along the rolling direction. In this paper, a computational analysis of interfacial heat transfer of strip rolling has been carried out based on the heat transfer theory and the mixed lubrication model, which takes the changes of the real contact area and oil film thickness into account. Also, the effects of oxide scale with and without extruded metal on the interfacial heat transfer are discussed. The results of this research suggest that the interfacial heat transfer coefficient (IHTC) at different positions can be determined based on the local contact conditions, and the theoretical calculation is shown to be an effective way to understand the interfacial heat transfer in the work zone under different rolling conditions. |
| Databáze: | OpenAIRE |
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