abstract |
Usage: in the production of cast iron with vermicular and spherical graphite. SUMMARY OF THE INVENTION: Cast iron contains a nitrogen-containing substance of 3-30%, a graphite powder of 0.5-6.0, a magnesium alloy, and the rest. As a nitrogen-containing substance, carbamide, dicyandiamide, urotropine are used. 1 e.p. F-ly, 2 tab. |