Sheathed Thermocouples for Continuous Molten Steel Temperature Measurement During the Ladle Treatment Process

Technical Report · Fri Sep 01 00:00:00 EDT 1989

DOI:https://doi.org/10.2172/5864130· OSTI ID:5864130

Phillippi, R. Michael ^[1]

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1. Vesuvius Crucible Co., Pittsburgh, PA (United States). Accumetrix Div.

The evolution of a thermocouple protection sheath for use in liquid steel during the ladle treatment process is described. Five different designs constructed of boron nitride, alumina-graphite, and magnesia-graphite were evaluated. Results show that excellent slag wear characteristics are possible using magnesia-graphite but improvements in thermal shock resistance and response time are required. Temperature profiles during argon stirring, addition of chill scrap, and natural cooling are presented.

• Research Organization: EG and G Idaho, Inc., Idaho Falls, ID (United States); Vesuvius Crucible Co., Pittsburgh, PA (United States). Accumetrix Div.
• Sponsoring Organization: USDOE
• DOE Contract Number: AC07-76ID01570
• OSTI ID: 5864130
• Report Number(s): DOE/ID--10251; ON: DE91007986
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BORON COMPOUNDS
BORON NITRIDES
CARBON
CHALCOGENIDES
COATINGS
DOCUMENT TYPES
ELEMENTAL MINERALS
ELEMENTS
FLUID INJECTION
FLUIDS
GAS INJECTION
GRAPHITE
IRON ALLOYS
IRON BASE ALLOYS
LIQUID METALS
LIQUIDS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MEASURING INSTRUMENTS
METALS
MINERALS
NITRIDES
NITROGEN COMPOUNDS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
PRODUCTION
PROGRESS REPORT
PROTECTIVE COATINGS
SLAGS
SMELTING
STEELS
TEMPERATURE MEASUREMENT
THERMOCOUPLES