| 简介 |
FIELD : metallurgy.
SUBSTANCE : invention concerns metallurgy field and can be used in foundry. Particularly it is used for desulfurising and modification of cast iron and receiving of cast iron products with structure of globular and vermicular graphite. Filler contains, wt % : 18÷75 magnesium, part of which is introduced in metal phase; aluminium, barium, calcium, titanium, rare-earth metals at its total content 1÷10, and also iron and silicon (as the rest) - in the form of one or several materials, choose from group, including ferrosilicium, magnesium - iron - silicon alloy; mixture of metal silicon with cast iron and/or steel rattle, and/or chip, and/or powder. In filler content can also be included passivator in the form of one or several materials from group, including fired dolomite, calcium fluoride, calcium carbide, silicon carbide, soda, in amount which is a part of total content in filler of iron and silicon.
EFFECT : cast iron mechanical properties rising at the expense of improvement of form and character of allocation graphite in it.
2 cl, 2 tbl |
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