| 简介 |
FIELD : ferrous metallurgy; composition of gray cast irons; manufacture of steam, gas and water pipes, valves, fittings, valve bodies.SUBSTANCE : proposed cast iron contains the following constituents, mass-% : carbon, 2.8-3.2; silicon, 0.8-1.2; manganese, 0.8-1.2; chromium, 0.8-1.2; titanium, 0.1-0.2; aluminum, 0.1-0.2; copper, 0.4-0.6; rare-earth elements, 0.1-0.2; niobium, 0.6-1.0; molybdenum, 2.0-3.0; zirconium, 0.1-0.2; nitrogen, 0.1-0.2; the remainder being iron.EFFECT : enhanced strength of cast iron.1 tbl |
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