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SENSORS FOR ON-LINE MONITORING OF MOLTEN METAL QUALITY

机译：熔融金属质量在线监测传感器

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摘要

The dissolution of gases in molten metals can lead to porosity and/or formation of inclusions in the resulting product. Real-time control of the process to minimize these defects requires information on the quality of the melt during processing. Electrochemical-based techniques can provide information on the chemical properties of the melt, while electromagnetic- or acoustic-based techniques are used for physical properties, such as the presence of inclusions. The aggressive environments in molten metals create challenges in the development of reliable sensors. In particular, materials that are stable and provide the needed transduction properties at these high-temperature reactive conditions must be identified or developed. In this paper, techniques for measuring dissolved gas and inclusion contents in molten metals are reviewed.
机译：气体在熔融金属中的溶解会导致孔隙和/或在最终产品中形成夹杂物。实时控制过程以最大程度地减少这些缺陷，需要有关加工过程中熔体质量的信息。基于电化学的技术可以提供有关熔体化学性质的信息，而基于电磁或声学的技术则可以用于物理性质，例如夹杂物的存在。熔融金属中的侵蚀性环境给可靠传感器的开发带来了挑战。特别地，必须识别或开发在这些高温反应条件下稳定并提供所需的转导特性的材料。本文综述了测量熔融金属中溶解气体和夹杂物含量的技术。

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