摘要
刹车盘做为保安件,为了有效起到制动作用,要求有优良的导热性、耐磨性、抗热疲劳性及小的刹车鸣叫。A型石墨数量越多,铸铁的导热性越好。铸铁的导热能力是温度的反比例函数。耐磨性不仅与基体的强度硬度有关,还与外界因素有关。材料的导热性能好,强度和硬度高,则抗裂能力强。可以通过合金化,提高熔炼工艺以及恰当的孕育,获得高性能的刹车盘。
Brake disks,as a component to ensure the security are constantly submitted to relatively high temperature and high pressure during braking action. In order to effectively play braking effect, brake disks require some performance,such as excellent thermal transport ability, good wear resistance,high thermal fatigue performance and low brake squeal,The more A type graphite, the better thermal transport ability of cast iron .Thermal conductivity of cast iron is temperature inverse proportion function.Wear resistancenot is related to not only the matrix strength and hardness , but also external factors, such as lubrication condition,contact pressure and sliding distance. Crack resistance is attributed to thermal transport ability and strength and hardness.Brake squeal randomly occur,people do not understand its mechanism.The high performance of brake disc is obtained by Alloying,advancing melting technology and proper Inoculation.
出处
《中国铸造装备与技术》
CAS
2012年第2期6-14,共9页
China Foundry Machinery & Technology
关键词
导热性
耐磨性
热疲劳
刹车鸣叫
合金化
熔炼工艺
thermal conductivity, wear resistance
thermal fatigue
brake squeal, alloying
melting technology
