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铸造生铁和球墨铸铁的区别

来源:http://www.kpp647.com添加时间:2017-05-02 14:50:10

1.铸铁井盖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。

1 cast iron manhole cover graphite nodular cast iron. The effect of spherical graphite on the metal matrix is smaller than that of flake graphite, which makes the strength of cast iron reach 70 ~ 90% of the matrix strength, the tensile strength is up to 120kgf/mm2, and has good toughness.

球铁铸件差不多已在所有主要工业部门中得到应用,这些部门要求高的强度、塑性、韧性、耐磨性、耐严 重的热和机械冲击、耐高温或低温、耐腐蚀以及尺寸稳定性等。

Ductile iron castings almost in all major industrial sectors applied in these sectors require high strength, ductility, toughness, wear resistance, thermal and mechanical shock, severe high temperature or low temperature, corrosion resistance and dimensional stability。

抗腐蚀性强。喷水腐蚀试验,九十天的腐蚀量仅为钢管的1/40,是灰铁管的1/10。使用寿命是灰铁管的2倍,是普通钢管的5倍。

Strong corrosion resistance. Spray corrosion test, the corrosion of ninety days is only 1/40 of the steel pipe, is the gray iron pipe 1/10. The service life is 2 times that of the gray iron pipe, which is about 5 times that of ordinary steel pipe.

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。为了满足使用条件的这些变化、球墨铸铁现有许多牌号,提供了机械性能和吻理性能的一个很宽的范围。

According to the different forms of carbon in pig iron, can be divided into pig iron, cast iron and cast iron and other ductile iron。 In order to meet the conditions of use of these changes, the existing number of ductile iron, provides a wide range of mechanical properties and kiss properties。



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