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In-situ determination of the heat flux density at the glass/mould interface during a glass pressing production cycle
Authors:Gilles Dusserre  Gilles Dour  Gérard Bernhart
Affiliation:1. Xingzhi College, Zhejiang Normal University, 321004 Jinhua, PR China;2. College of Chemistry and Life Sciences, Zhejiang Normal University, 321004 Jinhua, PR China;3. Department of Chemical, Materials and Production Engineering, University Federico II, Piazzale Vincenzo Tecchio 80, 80125 Naples, Italy;1. ARC Centre of Excellence for Design in Light Metals, Materials Engineering School of Engineering, The University of Queensland, QLD 4072, Australia;2. CAST Co-operative Research Centre, Department of Materials Engineering, Monash University, VIC 3800, Australia;1. CNRS, Centre de Recherche Paul Pascal (CRPP), UPR 8641, F-33600 Pessac, France;2. Université de Bordeaux, Centre de Recherche Paul Pascal, F-33600 Pessac, France;1. College of Resources and Environment, Hunan Agricultural University, Changsha 410128, PR China;2. Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use, Hunan Agricultural University, Changsha 410128, PR China;3. Laboratory of Environmental Microbiology and Toxicology, School of Biological Sciences, The University of Hong Kong, Hong Kong Special Administrative Region;1. Physical Chemistry Department, University of Tabriz, Tabriz, Iran;2. Department of Organic and Bioorganic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz 51664, Iran
Abstract:The glass pressing process involves heat transfer between the glass gob and the forming tool which are among the most important parameters influencing the thermo-mechanical stresses in the moulds. The present paper presents the development of the instrumentation of a mould for the measurement of temperatures during the production cycle. These measurements are exploited with an inverse method to evaluate the heat flux densities at the working surface of the mould. The influence of each process stage and of the location at the surface of the mould on the thermal loadings are described. The evaluated heat flux densities are used as boundary conditions in a finite element calculation. The validity of these results are discussed taking into account the differences between experiment and calculation, the hypothesis of the inverse method and the time response of the thermocouples.
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