連続鋳造における外来性介在物の起源とその減少対策(<特集>鋼の連続)

概要

論文の詳細を見る
Investigations to produce clean steel for draw and ironing cans in continuous casting process were carried out. Results obtained are as follows : (1) Inclusions which cause flange cracks in manufacturing draw and ironing cans are 50∿150μm in size and CaO-Al_2O_3 in compositions, which can be fairly well detected by the magna-flux method. (2) CaO-Al_2O_3 inclusions are originated from slag which is deoxidized by Al in molten steel, the content being about 0.005% or above. (3) Main source of the above-mentioned inclusions is tundish-slag, which is spattered into molten steel by the stream of the next ladlc in continuous casting. (4) Good clean steel for draw and ironing cans can be produced by means of either large tundish with dams or reladling method (LLTM process) (5) The theoretical model to explain the effect appointed out in (4) was proposed.
社団法人日本鉄鋼協会の論文
1981-06-01