Thermal contact conductance at continuous roll-casting interface
- 75 Downloads
The effects of surface roughness, strain rate, friction coefficient and pressure on real contact area were analyzed based on the research of Stupkiewicz. The real contact area model taking account of the effect of friction and deformation of material was obtained. The model of contact conductance at the rolling interface was obtained by integrating the specific feature of heat transfer through the interface of continuous roll-casting. The results indicate that the real contact area increases obviously when the material is under yield, and the real contact area varies inversely with surface roughness, whereas it varies exponentially with friction coefficient, strain rate and pressure, and the power factor depends on strain rate.
Key wordsreal contact area strain rate pressure thermal contact conductance
Unable to display preview. Download preview PDF.
- BRADBURY P J, HUNT J D, Coupled fluid flow, deformation and heat transfer model for a twin roll caster[J]. Minerals, Metals & Materials Soc, 1995, 125(2): 739–746.Google Scholar
- JARRY P, TOITOT D, MENET P Y. Thermo-mechanical modeling of 3C roll casting of alloys[J]. Metals & Materials Soc, 1996, 47(4): 905–911.Google Scholar
- YUN M, HUNT J D, EDMONDS D V. Heat line formation during roll-casting of aluminum alloys at thin gauges[J]. Journal de Physique, 1993, 3(7): 227–230.Google Scholar
- PHILLP J, DENIS T, PIERRE Y M, Thermo-mechanical modeling of 3C roll casting of alloys[J]. Light Metals, 1996, 15(4): 905–911.Google Scholar