Thermal measuring and testing – Temperature measurement – Of molten metal
Patent
1989-12-04
1991-12-03
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
Of molten metal
136234, 164150, 266 87, G01K 110, H01K 3510
Patent
active
050695533
ABSTRACT:
Disclosed is a protective thermocouple sheath of a magnesia graphite refractory material for use in continuous temperature measurements of molten metal in a metallurgical ladle and having a basic slag layer thereon. The sheath includes an elongated torpedo-shaped sheath body formed of a refractory composition and having an interior borehole extending axially therethrough and adapted to receive a thermocouple. The sheath body includes a lower end which is closed about the borehole and forms a narrow, tapered tip. The sheath body also includes a first body portion integral with the tapered tip and having a relatively constant cross section and providing a thin wall around the borehole. The sheath body also includes a second body portion having a relatively constant cross section larger than the cross section of the first body portion and providing a thicker wall around the borehole. The borehole terminates in an open end at the second body portion. The tapered tip is adapted to penetrate the slag layer and the thicker second body portion and its magnesia constituent material are adapted to withstand chemical attack thereon from the slag layer. The graphite constituent improves thermal conductivity of the refractory material and, thus, enhances the thermal responsiveness of the device.
REFERENCES:
patent: 3395908 (1968-08-01), Woodcock
patent: 3580744 (1971-05-01), Shingo Inonye et al.
patent: 3763704 (1973-10-01), Blan et al.
patent: 4018624 (1977-04-01), Rizzolo
patent: 4126026 (1980-08-01), Kunta
patent: 4413810 (1983-11-01), Tenberg et al.
patent: 4485263 (1984-11-01), Itoyama et al.
patent: 4721533 (1988-01-01), Phillippi et al.
patent: 4721534 (1988-01-01), Phillippi et al.
patent: 4749416 (1988-06-01), Greenspan
patent: 4778281 (1988-10-01), Falk
patent: 4880212 (1989-11-01), Hagglund et al.
patent: 4984904 (1991-02-01), Nakano et al.
Vesuvius Crucible Company
Yasich Daniel M.
LandOfFree
Protective sheath for a continuous measurement thermocouple does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Protective sheath for a continuous measurement thermocouple, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protective sheath for a continuous measurement thermocouple will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1693936