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球状石墨对金属基体的割裂作用

来源:http://www.kpp647.com添加时间:2017-05-16 16:16:57

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 well cover out of graphite, spherical cast iron。 The splitting action of spherical graphite on metal matrix is smaller than that of flake graphite, so that the strength of cast iron reaches 70 to 90% of the matrix strength, and the tensile strength is up to 120kgf/mm2, and it has good toughness。

2。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。

2 ductile iron castings are 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.

3.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。

3。 strong corrosion resistance。 Water spray corrosion test, ninety days of corrosion is only 1/40 of the steel pipe, gray iron pipe 1/10。 Service life is 2 times of gray iron pipe, 5 times of ordinary steel pipe。

塑性好。

Good plasticity.

4.延伸率≥7%,与高碳钢材相近,而灰铁材料延伸率为零。

The 4 extension rate greater than 7%, similar to high carbon steel, and iron material extension rate is zero.

强度高。抗拉强度ób≥420MPa,屈服强度ós≥300MPa,与低碳钢材相同,是灰铁材料的三倍。

High strength. The tensile strength, yield strength, B = 420MPa, s = 300MPa, with the same low carbon steel, is three times the iron material.



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