BRAKE DISC MEMBER

PURPOSE:To obtain a disc member which has high extending ratio, resistance for thermal cracking, high frictional coefficient and resistance for fatigue by composing the disc member of compact vermiculite graphite cast iron whose ferrite ratio is substantially ranged between 50 and 70% and containing...

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Bibliographische Detailangaben
Hauptverfasser:	KOMATSU NORIHITO, HINO HARUKI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING BRAKES CHEMISTRY CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY THERMAL INSULATION IN GENERAL TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a disc member which has high extending ratio, resistance for thermal cracking, high frictional coefficient and resistance for fatigue by composing the disc member of compact vermiculite graphite cast iron whose ferrite ratio is substantially ranged between 50 and 70% and containing specified amounts of C, Si, Mn, P, S, Ni, Mo and Mg. CONSTITUTION:A brake disc member is made of compact vermiculite graphite cast iron whose ferrite ratio is substantially ranged between 60 and 70%. The chemical composition is as follows: C:3.2 to 3.7wt%, Si:1.8 to 2.4wt%, Mn:0.6 to 0.7wt%, P:0.03wt% or lower, S:0.03wt% or lower, Ni:1.0 to 3.0wt%, Mo:0.2 to 0.6wt%, and Mg: 0.004 to 0.015wt%. Thermal conductivity, resistance for thermal cracking, mechanical strength and durability are thus improved. This is suitable for a brake disc member for a high-speed vehicle.