Alloy cast iron used for valve seat

The invention discloses a formula of alloy cast iron used for a valve seat, comprising the following chemical compositions by weight percentages: 2.9-3.3 percent of C, 2.6-3.2 percent of Si, 0.7-1.2 percent of Mn, 0.3-0.6 percent of P, 32-35 percent of Cr, 0.5-1.0 percent of Ni, 1.2-1.5 percent of M...

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Bibliographische Detailangaben
Hauptverfasser:	ZHONG JIANMIAO, QIAN CHUNFANG, YANG KANGMEI, GAN JIAWEI, JIN GUOQIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS BLASTING CHEMISTRY CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES ENGINE PLANTS IN GENERAL FERROUS OR NON-FERROUS ALLOYS HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY STEAM ENGINES TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	The invention discloses a formula of alloy cast iron used for a valve seat, comprising the following chemical compositions by weight percentages: 2.9-3.3 percent of C, 2.6-3.2 percent of Si, 0.7-1.2 percent of Mn, 0.3-0.6 percent of P, 32-35 percent of Cr, 0.5-1.0 percent of Ni, 1.2-1.5 percent of Mo, 1.0-0.5 percent of W and the balance of Fe and inevitable impurities. The maximum hardness of the valve seat cast by using the alloy through surface quenching can reach HRC55, and the toughness, wear resistance and high temperature resistance thereof are greatly improved.