IN SITU MELT TEMPERATURE ANALYSIS DURING HIGH PRESSURE GAS ATOMIZATION OF LIQUID METALS
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Published:2024
Issue:3
Volume:34
Page:53-71
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ISSN:1044-5110
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Container-title:Atomization and Sprays
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language:en
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Short-container-title:Atomiz Spr
Abstract
Imaging of the melt plume during high pressure gas atomization (HPGA) using consumer digital single lens reflex (DSLR) equipment provides useful information about the process. Color imaging and high spatial resolution can be a useful adjunct to the more widely reported imaging using specialist high frame rate cameras. With knowledge of the camera's color response curves, the ratio of the signals in the red, green, and blue channels can be used to make spatially resolved temperature estimates of the material within the melt plume. Moreover, by combining these temperature estimates, which depend only upon intensity ratios, with the actual intensity of the optical signal, we propose that it is possible to obtain estimates of the relative surface area of the melt within the plume. This in turn can be related to the local melt fragmentation rate within the atomization plume.
Reference35 articles.
1. Achelis, L., Uhlenwinkel, V., Lagutkin, S., and Sheikhaliev, S., Atomization Using a Pressure-Gas-Atomizer, in Progress in PowderMetallurgy, Parts 1 and 2,Mater. Sci. Forum, vols. 534-536, pp. 13-16, 2007. 2. Anderson, I.E., Video of the Initial Stages of Gas Atomization of Stainless Steel, Ames Laboratory, Iowa, USA, accessed from https://www.youtube.com/watch?v=BgiwGmf4fFc, 2011. 3. Anderson, I.E. and Achelis, L., Two Fluid Atomization Fundamentals, in Metal Sprays and Spray Deposition, H. Henein, V. Uhlenwinkel, and U. Fritsching, Eds., Cham, Switzerland: Springer, 2017. 4. Aphale, S.S. and DesJardin, P.E., Development of a Non-Intrusive Radiative Heat Flux Measurement for Upward Flame Spread Using DSLR Camera Based Two-Color Pyrometry, Combust. Flame, vol. 210, pp. 262-278, 2019. 5. Arachchilage, K.H., Haghshenas, M., Park, S., Zhou, L., Sohn, Y., McWilliams, B., Cho, K., and Kumar, R., Numerical Simulation of High-Pressure Gas Atomization of Two-Phase Flow: Effect of Gas Pressure on Droplet Size Distribution, Adv. Powder Technol., vol. 30, pp. 2726-2732, 2019.
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