下注用粘土質煉瓦の熔蝕状態, 並びにスカム, 酸化物系非金属介在物についての試験調査 : 造塊用粘土質耐火物に関する研究(第4報)

概要

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Investigations on the mechanism of the errosion of nozzle, guide and runner bricks by flowing molten steel, scums and non-metallic oxide inclusions in the process of bottem casting for producing conventional carbon steel with a basic open-hearth furnace as well as with a converter were carried out. This paper concerns chiefly with the observation of external appearance and the micro-structure of eroded brick after pouring the rimming and killed steels, and with the study of various scums adhering to the surface of residual steel rod in runner opening and ingot, of the float on the upper surface of molten steel in mould, and of the non-metallic inclusions. Also the chemical and mineralogical investigations were carried out to know the relation between the chemical composition of scum and non-metallic oxide inclusions. From the experimental results the author concluded that the erosin of the bricks by flowing molten steel was closely connected to the floating minute particles of oxide slag, and that the origination of high aluminous sand would probably be not directly concerned in the erosion of bricks by molten steel.
社団法人日本セラミックス協会の論文
1962-11-01