ROTOR FOR DISC BRAKE

• Main Authors: MATSUI HIROMICHI, SANBE TAKAHIRO, OZAWA AKIHIKO, AKIYAMA KOICHI, JINBO YOSHIO
• Format: Patent
• Language: English
• Published: 27.03.1990
• Subjects: BLASTING; BRAKES; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ENGINEERING ELEMENTS AND UNITS; FREQUENCY-CHANGING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THERMAL INSULATION IN GENERAL; WEAPONS

PURPOSE:To provide a disc brake rotor having a thermal crack resistance, a vibration suppressing ability and a wear resistance which are excellent, by forming a disc brake from a flake graphite cast steel containing specific weight percents of C, Si, Mn, and Mo, a specific weight percent of Ti as necessary, and the remainder of Fe and impurities and having a pearlite basic structure. CONSTITUTION:A disc brake rotor 1 is formed of flake graphite cast steel containing 3.5 to 4.0wt.% of C, 1.6 to 2.0wt.% of Si, 0.5 to 0.8wt.% of Mn, 0.4 to 1.2wt.% of Mn, 0.05 to 0.10wt.% of Ti as necessary, and remainder of Fe and impurities and having a pearlite basic structure. Accordingly, the disc brake rotor 1 is excellent in thermal crack resistance, vibration suppressing ability and wear resistance. In particular, the following excellent advantages can be obtained: When the rotor is used in such a way that braking during high speed running is repeated several times, no thermal crack occurs while sounding upon braking may be low.