Modern technology for treating steel outside the furnace with cored wire

This article examines certain aspects of out-of-furnace treatments currently being given to steel with the use of cored wire having different fillers. It is shown that many of the technologies now being employed to make special quality steels could not be realized without the use of different cored-...

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Bibliographic Details
Published in:Metallurgist (New York) 2007-03, Vol.51 (3-4), p.165-171
Main Authors: Dyudkin, D A, Kisilenko, V V
Format: Article
Language:English
Subjects:
Assimilation
Calcium
Contamination
Feeding
Fillers
Furnaces
Steel
Steels
Wire
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Summary:This article examines certain aspects of out-of-furnace treatments currently being given to steel with the use of cored wire having different fillers. It is shown that many of the technologies now being employed to make special quality steels could not be realized without the use of different cored-wire fillers in such treatments and controlled feeding of the wire into the molten metal. In order to obtain predictable and reproducible results, the introduction of cored wire should be combined with all of the other measures normally used in the out-of-furnace treatment. The article also examines questions related to the use of cored wire with new fillers (SK40, REM, etc.). It is shown that, other treatment conditions being equal, calcium assimilation is 15-30% higher with the use of wire SK40 than wire SK30 to treat steel. It is noted that the problem of reducing the degree of contamination of the metal by nonmetallic inclusions-including corrosion-active inclusions-could be solved by using wire filled with a complex inoculant that contains an REM.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-007-0030-4