| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: cast iron contains the following component ratio, wt %; carbon 2.7-3.7; silicone 2.5-3.0; manganese 0.2-0.3; magnesium 0.001-0.002; cerium 0.01-0.015; boron 0.01-0.015; niobium 0.01-0.02; hafnium 0.02-0.03; selenium 0.001-0.002; tungsten 0.02-0.03; copper 1.1-1.5; iron is the rest. ^ EFFECT: increasing cast iron strength. ^ 1 tbl |
