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一、US闸瓦日本国铁目前客货车使用的闸瓦,分为铸铁的和合成的两种。近几年,又研制特种铸铁制的US轻型闸瓦。经过各种试验和试用证明:这种闸瓦可作为新的车辆配件正式使用。 US闸瓦有如下特点: (1)摩擦性能同普通铸铁闸瓦基本相同; (2)降雪时,其摩擦系数不降低; (3)耐磨性强,其使用寿命约为普通铸铁闸瓦的3倍。使用普通铸铁闸瓦的车辆改用US闸瓦
First, the US brake shoe Japan’s railway currently used in passenger and freight cars brake shoe, divided into two kinds of cast iron and synthetic. In recent years, the United States also developed a special cast iron US light brake shoe. After a variety of tests and trial proved that: this brake can be used as a new vehicle parts official. US brake shoe has the following characteristics: (1) The friction performance is basically the same as ordinary cast iron brake shoe; (2) The friction coefficient does not decrease when it is snowing; (3) The wear resistance is strong and its service life is about ordinary cast iron brake shoe 3 times. Vehicles using normal cast iron brake shoes switch to US brake shoes