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Characterization of a refractory cement and sensor development for temperature measurements in molten steel
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology.
2018 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In steel manufacturing, temperature control is a critical parameter, as it is extremely important for the steel quality. In general, disposable sensors are regularly submerged in the melt for temperature measurements. There are commercially available sensors for continuous temperature measurements.

In this study, a refractory cement is used for encapsulation and carrier of a resistive temperature detector, for continuous temperature measurements in molten steel. This cement is normally used for manufacturing of steel melt crucibles. The work in this study is mostly experimental and consist of characterization of the cement and development of the sensor. The characterization includes the mechanical properties, the thermal shock resistance, the steel melt resistance and obtainable surface roughness, for different powder fractions, water-to-cement ratio, firings and mixing method. Process development was also done for the manufacturing of the sensor element and its carrier system.

The end goal of continuous temperature measurement in molten steel for more than 60 minutes was not reached. However, functional sensors were developed where temperatures up to 1000 °C were measured during calibrations, and the cement was well characterized.

Place, publisher, year, edition, pages
2018. , p. 39
Series
UPTEC Q, ISSN 1401-5773 ; 18014
Keywords [en]
Refractory castable, high temperature, RTD, resistive temperature detector, steel melt, cement
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:uu:diva-353490OAI: oai:DiVA.org:uu-353490DiVA, id: diva2:1217551
External cooperation
Sandvik Materials Technology
Educational program
Master Programme in Materials Engineering
Supervisors
Examiners
Available from: 2018-06-15 Created: 2018-06-13 Last updated: 2018-06-15Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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