砂疵の生因に関する 2, 3 の考察 : 鋼中非金属介在物, とくに砂疵に関する研究 V

概要

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In a series of the study on the nonmetallic inclusions, especially sand marks in steel, some consideration herein is made towards the origin of sand marks referring to the results of experiment which have been reported in the second to the fourth report on this subject. (Tetsu-to-Hagane 47 (1961) 11, p.1588 ; 48 (1962) 7, p.850 ; 47 (1961) 7, p.907) The main causes which presumably induce occurrence of sand marks are made clear as follows ; (1) Erosion of refractory materials for steel ingot-making in contact with molten steel ; (2) Change of molecular species constituting nonmetallic inclusions, and decrease of fluidity of molten steel under different conditions of deoxidation or austenite-grain refining ; (3) Oxidation of molten steel by open air ; and (4) oxidation of aluminium, for instance, as deoxidizer and as austenite-grain refiner, that might occur together with oxidation of molten steel by air.
社団法人日本鉄鋼協会の論文
1962-01-01