Refractories for stopperless steelcasting

Bugaev, N. F.; Chernyavskaya, V. P.; Фролов, Ю. А.; Krokhin, N. N.; Kortel, A. A.; Reinov, L. A.

doi:10.1007/bf01287178

Refractories

1974

DOI: 10.1007/bf01287178

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Refractories for stopperless steelcasting

N. F. Bugaev

V. P. Chernyavskaya

Ю. А. Фролов

et al.

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1980

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“…According to the r e s u l t s of m e r c u r y p o r o m e t r y , 75% of the o v e r a l l p o r e volume l i e s within the size range 0.0005-0.05 m m [2]; however, in this c a s e the size of the "mouth" of the open p o r e s is e s t i m a t e d , not the p o r e size.…”

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Interaction of periclase and corundum refractories with iron and iron-manganese melts

et al. 1980

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With six to seven melts per day and a lining t e m p e r a t u r e of not less than 600~ w e a r takes place by fusion of the working zone, not by cracking, as noted above. In this connection the lining structure is monolithic with a glazed surface. With this intensity of operation the variation of the lining wear is determined by the chemical composition of the stag.With six to seven melts per day (_46% of the campaigns) the ladle lining durability after hot patching was 28 melts, with a maximum of 37 melts, as compared with 17.1 for ladles without hot patching and from one to two melts per day. Thus the use of a r e f r a c t o r y dressing for patching local sectors of wear reduces the number of intermediate maintenance operations.Over a test period of 2 months with 1.58 hot patchings per ladle campaign, the durability was increased on average from 19.1 to 23.3 melts, with a r e f r a c t o r y consumption of 5.4 kg/tou of steel as against 6.3 kg/ton without hot patchings. Figure 3 shows the variation of the lining durability over a period of years. CONCLUSIONSThe use of 70-75% of silica artifacts to line steel-teeming ladles, accompanied by routine hot patchings, has permitted an increase in the lining durability by from four to five melts.With an increase in the ladle throughput from 1-2 to 6-7 melts per day, accompanied by hot patchings, the maximal lining durability was 37 melts (average 28 melts) and the refractory consumption was reduced by 2.1 kg/ton of steel.The saving obtained by the use of a silica lining was 332,200 rubles. INTERACTIONOF PERICLASE AND CORUNDUM REFRACTORIES WITH IRON AND IRON--MANGANESE MELTS

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Interaction of periclase and corundum refractories with iron and iron-manganese melts

et al. 1980

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“…In recent years, refractories made from fused oxides have become more extensively used in the dosing equipment for continuous casting of steel [1,2] and as the sliding gates in steel-casting buckets [3,4]. The most stringent specifications in relation to thermal shock resistance, strength, and metal and slag resistance are set for such products.…”

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Phase changes in fused oxide refractories in contact with semimild and stainless steels and their slags

et al. 1980

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Refractories for stopperless steelcasting

Cited by 2 publications

References 0 publications

Interaction of periclase and corundum refractories with iron and iron-manganese melts

Interaction of periclase and corundum refractories with iron and iron-manganese melts

Phase changes in fused oxide refractories in contact with semimild and stainless steels and their slags

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