| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: proposed method comprises adding powder modifying agent under metal jet during casting in amount of up to 0.1 % by weight in terms of refractory ceramic particles. Said modifying agent comprises 50-90 wt % of refractory ceramic particles cladded by substance-protector. During first 1 to 10 min of casing, modifying agent is added in amount of 0.03 to 0.06% by weight of cast steel weight for said period in terms of refractory ceramic particles, while, in subsequent casting said agent is added in amount of 0.003 to 0.03% by weight of cast steel for said period in terms of refractory ceramic particles. Modifying agent feed is terminated 0.5 to 1.0 min before termination of casting. ^ EFFECT: improved continuously cast ingot structure, minor defects of macrostructure, reduced number of chemical and structural irregularities. ^ 2 cl, 1 tbl, 2 ex |
