Gray cast iron and preparation method and application thereof

The invention provides gray cast iron and a preparation method and application thereof. The gray cast iron comprises 3.30%-3.40% of C, 1.80%-2.10% of Si, 0.60%-1.00% of Mn, 0.060%-0.120% of S, 0.50%-0.80% of Cu, 0.15%-0.30% of Cr, 0.20%-0.40% of Ni, 0.040%-0.080% of Sn, 0.0080%-0.0110% of N, 0-0.11%...

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Bibliographische Detailangaben
Hauptverfasser:	LI XIAOYAN, SUN FAN, LYU QINGKE, SUN CHANGWEI, ZHANG XINGHE, BAO JUNMIN, QIAO JINGUO, AN CUNGUO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING CHEMISTRY COMBUSTION ENGINES CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES FERROUS OR NON-FERROUS ALLOYS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING METALLURGY TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides gray cast iron and a preparation method and application thereof. The gray cast iron comprises 3.30%-3.40% of C, 1.80%-2.10% of Si, 0.60%-1.00% of Mn, 0.060%-0.120% of S, 0.50%-0.80% of Cu, 0.15%-0.30% of Cr, 0.20%-0.40% of Ni, 0.040%-0.080% of Sn, 0.0080%-0.0110% of N, 0-0.11% of impurity elements and the balance Fe. The gray cast iron is high in tensile strength, high in hardness and small in shrinkage porosity risk, and can improve the mechanical property and reduce the water leakage rate during cylinder cover production. 本发明提供一种灰铸铁及其制备方法和应用，该灰铸铁包括：C3.30％～3.40％，Si 1.80％～2.10％，Mn 0.60％～1.00％，S 0.060％～0.120％，Cu0.50％～0.80％，Cr 0.15％～0.30％，Ni 0.20％～0.40％，Sn 0.040％～0.080％，N0.0080％～0.0110％，杂质元素0～0.11％，余量为Fe。该灰铸铁抗拉强度高、硬度高、缩松风险小，生产气缸盖时能够兼顾改善力学性能，降低漏水率。