| 球墨铸铁成分 |
| 添加时间：2020/7/15 15:32:33 浏览次数： |
| 球墨铸铁成分 Composition of ductile iron 生铁是含碳量大于2%的铁碳合金，工业生铁含碳量一般在2.5%--4%，并含C、SI、Mn、S、P等元素，是 用铁矿石经高炉冶炼的产品。根据生铁里碳存在形态的不同，又可分为炼钢生铁、铸造生铁和球墨铸铁等几种。 Pig iron is an iron carbon alloy containing more than 2% carbon. The carbon content of industrial pig iron is generally 2.5% - 4%, and contains elements such as C, Si, Mn, s, P, etc. it is a product of iron ore smelting by blast furnace. According to the different forms of carbon in pig iron, it can be divided into steelmaking pig iron, casting pig iron and ductile iron. 析出的石墨呈球形的铸铁。球状石墨对金属基体的割裂作用比片状石墨小，使铸铁的强度达到基体组织强度的70～90%，抗拉强度可达120kgf/mm2，并且具有良好的韧性。球墨铸铁除铁外的化学成分通常为：含碳量3.6～3.8%，含硅量2.0～3.0%，含锰、磷、硫总量不超过1.5%和适量的稀土、镁等球化剂。 The precipitated graphite is spherical cast iron. The splitting effect of spheroidal graphite on metal matrix is smaller than that of flake graphite. The strength of cast iron reaches 70-90% of that of matrix structure. The tensile strength of cast iron can reach 120 kgf / mm2 and has good toughness. In addition to iron, the chemical composition of nodular cast iron is usually 3.6-3.8% carbon, 2.0-3.0% silicon, 1.5% manganese, phosphorus and sulfur, and appropriate amount of rare earth, magnesium and other spheroidizing agents. |
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