METHOD FOR WORKING REFRACTORY BED OF LADLE

PURPOSE:To reduce the shrinkage rate at the time of drying and to form a sand refractory bed without any cracking by using castable refractory material easily executing working and partial repairing and restraining the working quantity of the castable refractory material in a ladle to low, in the wo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KOBAYASHI MASAAKI, MASUDA TSUTOMU, TAKEBAYASHI TOSHIHARU, OKADA YUTAKA, MIZUKAMI KAZUNORI, TOMIOKA ATSUSHI, IKOMA TATSUYA, KAMIOKA TAKAYUKI, KORENOBU TOSHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FURNACES HEATING KILNS LIGHTING MECHANICAL ENGINEERING OVENS PERFORMING OPERATIONS POWDER METALLURGY RETORTS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To reduce the shrinkage rate at the time of drying and to form a sand refractory bed without any cracking by using castable refractory material easily executing working and partial repairing and restraining the working quantity of the castable refractory material in a ladle to low, in the working to a refractory bed in the ladle provided with a nozzle hole and a porous plug hole. CONSTITUTION:A disk-like precast block 9 arranging the preformed round holes 9a, 9b at the positions corresponding to the nozzle hole 6 and the porous plug hole 7 is set to the inner bottom of the ladle 1 and also, the castable refractory material 11 is filled up in the outer periphery. On the other hand, dummies ND, PD having the shapes corresponding to the nozzle hole 6 and the porous plug hole 7 are arranged in the round holes 6, 7. The highly fire- resisive castable refractory material 10 is filled up in the round holes 6, 7 around these dummies ND, PD to form the refractory bed 8. In this way, the working time in the ladle can be shortened and the partial repair of the eroded nozzle part can be executed and production quantity of the waste refractory accompanied with the repairing can be reduced.