赤外線カメラによる高炉炉底侵食の測定

概要

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The salamander penetration profile may be obtained by means of thermography (measurement of temperature distribution pattern) outside the blast furnace mantle using an infrared camera. There are two points in the study ; (1) introduction of wear index ξ, (2) computer simulation of the process of penetration. In connection with a problem that the measuring condition is not constant during taking thermographs, ξ was introduced, which was so taken as to avert those changes of the condition in processing a quantitative analysis of obtained thermographs. Computer simulation was carried out on a process of salamander penetration, assuming a model of stress concentration in hearth refractory body. Changing two major parameters within the model, the computation turned out simulated penetration profiles and value of ξ. The latter was compared with the values of ξ obtained from measured thermographs. This procedure enables us to determine the above two parameters, and to estimate the salamander penetration profile. A good agreement was obtained beteeen the estimated salamander penetration profiles and results of destructive survey of hearth refractories after operation-down.
1972-10-01