扁平リムド鋼塊の S 偏析におよぼす鋼塊形状の影響 : 大型扁平リムド鋼塊の偏析の研究 I

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Recent advance of steelmaking, especially application of LD process has made it necessary to use an enlarged rimmed slab ingot. Under this circumstance, it became important to select the dimensions of the ingot so that the segregating zone may be as small as possible and high yield of slabbing may be ensured. Authors investigated the effect of dimensions of ingot on the segregation, used several experimental molds with varied thickness, height, ratio of width to thickness and weight, in Muroran Iron Works, Fuji Iron & Steel Co. Ltd. The obtained results were as follows. (1) The effect of three factors representing the design of ingot on sulphur-segregation seems to be greater in the following order; thickness, height and width. (2) Increase in the thickness of ingot tends to reduce the degree of max. segregation, change the location of max. segregating zone (segregating ratio is over 4). In the case of track-time being less than 3 hrs, two peaks of segregation appear as the thickness of ingot exceeds 800mm. (3) When the height of ingot is increased, the location of max. segregation is changed to top-side and the range of high segregating zone is reduced. (4) The high segregation of rimmed steel ingot consists of two kinds of segregation, one with the location charged to bottom-side and one with the location not changed by the dimensions of ingot. And as these segregations are overlapped, the peak appears only one, besides double peaks do as the segregation is separated.
社団法人日本鉄鋼協会の論文
1964-02-01

扁平リムド鋼塊の S 偏析におよぼす鋼塊形状の影響 : 大型扁平リムド鋼塊の偏析の研究 I

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