| 简介 |
FIELD : metallurgy.SUBSTANCE : filler includes calcium, silicium and magnesium in the form of magnesium silicide and/or magnesium salts, and/or metallic magnesium, as well as iron at the following component ratio, wt % : silicium 30-75; calcium 5-50; magnesium 0.1-15; and iron is the rest. In addition, filler includes barium in the form of silicides and/or salts at the following component ratio, wt % : silicium 30-75; calcium 5-40, barium 5-20; magnesium 0.1-15; and iron is the rest. In addition, filler includes halogenides at the following component ratio, wt % : silicium 30-70; calcium 12-40 (or calcium 5-40 and barium 5-20); magnesium 0.1-15; halogenides 0.1-12; and iron is the rest. In addition, filler includes at least one element of the group including vanadium, niobium, titanium, and rare-earth metals.EFFECT : improvement of melt refinement and modification.9 cl, 2 tbl, 1 ex |
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