セミキルド鋼についての二, 三の研究(II) : 鋼塊の表面気泡と鋼片の縦疵との関係

概要

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An examination was made of the correlation between the condition of subsurface blow-holes ascertained by corner-samples taken from 4-ton semi-killed steel ingots with varied degree of deoxidation and the condition of the seams of the blooms rolled from those ingots and experiments performed further of the change of sub-surface blow-holes accompanying the scaling of the skin of ingots in the soaking pit. As the result, the relation between the size and the distribution of subsurface blow-holes and the depth of seams was clarified and it seems that in ordinary case the sub-surface blow-holes should be within 2mm from the skin or else the thickness of solid-skin should be made more than 5mm to prevent the forming of the seams.
社団法人日本鉄鋼協会の論文
1957-11-01