Measuring and testing – Embrittlement or erosion
Patent
1983-08-29
1984-11-13
Swisher, S. Clement
Measuring and testing
Embrittlement or erosion
266 99, G01N 1700
Patent
active
044818092
ABSTRACT:
A method and apparatus are disclosed for monitoring the condition of the stirring block and solid plug therein as incorporated in the normal refractory brick lining of a molten metal ladle to provide a structure through which gas can be introduced into the molten metal, the method utilizes heat sensors and/or Hall Effect transducers embedded in the stirring block and/or solid plug therein in connection with apparatus providing a warning of critical wear and/or erosion in the gas stirring devices by the molten metal in the ladle. An appropriately shaped stirring block provides for the positioning of some of the normal refractory brick lining of the ladle partially thereover so as to eliminate loosening or cracking of the stirring block and the undesirable escaping of molten metal from the ladle.
REFERENCES:
patent: 2915305 (1959-12-01), Craig
patent: 3024657 (1962-03-01), Brown
patent: 3856284 (1974-12-01), Hoyer
patent: 3898366 (1975-08-01), Aurini
patent: 4249719 (1981-02-01), Knuppel et al.
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