| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: invention refers to metallurgy, particularly to cast heat-resistant ferrite steel for production of fire bars of sintering machines operating under conditions of cyclic heating at temperature above 1000C. Steel contains carbon, silicon, manganese, chromium, sulphur, phosphorus, aluminium, tungsten and iron at the following ratio of components, wt %: carbon 0.75 0.95, silicon 0.50 1.25, manganese 0.40 0.80, chromium 18.0 22.0, sulphur not more 0.040, phosphorus not more 0.040, aluminium 0.01 0.06, tungsten 0.20 0.65, iron - the rest. Additionally steel can contain molybdenum at amount of 0.05 0.25 wt %. ^ EFFECT: increased heat resistance of steel and fire bars made out of this steel. ^ 2 cl, 2 tbl
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