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POWDER WIRE FOR FAME magnesium in the melt based on iron
POWDER WIRE FOR FAME magnesium in the melt based on iron
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机译:铁粉熔炼成名的粉末
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摘要
The invention relates to a ladle metallurgical treatment of melts powdered reagents.; The utility model solves the technical problem - a significant increase in the degree of desulfurization efficiency and the use of magnesium, reducing the flow at wire-furnace treatment of metallurgical melts.; Flux-cored wire for treating the liquid iron in the ladle consists of a metal shell and a filler of a mechanical mixture of magnesium powder and a passivation additive. New in the wire that as passivation additives used refractory material having a melting point of not less than 1580 ° C, wherein the ratio between the magnesium, and the refractory material amounts to (0,25-1,95): 1, and the ratio between the components of the cored wire It is set as follows, by weight. %:;
filler - 32-65 metal sheath - 35-68.
; The refractory material with a melting point of not less than 1580 ° C can use one of the following substances or mixtures thereof: magnesite, periclase, kyanite, sillimanite concentrates, carborundum, corundum, calcined dolomite, lime or melting the mixture with a content by weight SaO≥50,0 . %.; 1 NRM f-ly; 1 ZP f-ly.
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