重载车制动鼓标准对比及金相组织差异探讨  

Standard Comparison and Metallographic Structure Difference of Brake Drum for Heavy Haul Vehicles

作　　者：谭晓郃 周家福 TAN Xiao-he;ZHOU Jia-fu(Guangdong Fuwa Heavy Industry Manufacturing Co.,Ltd.,Taishan 529262,Guangdong,China;Yulin Hangyu Foundry Co.,Ltd.,Yulin 537034,Guangxi,China)

机构地区：[1]广东富华重工制造有限公司,广东台山529262 [2]玉林市航宇铸造有限公司,广西玉林537034

出　　处：《铸造》2020年第1期78-83,共6页Foundry

摘　　要：比较国内外重载汽车制动鼓的标准,总结了制动鼓失效机理。各标准中关于制动鼓金相组织中碳化物加磷共晶数量有差异,如一厂商制动鼓中碳化物加磷共晶数量比其他标准高很多,力学性能不但不差却较其他标准要高,机械加工性无差别,而且这在多年的市场应用中得到了实际检验。这与一般的认知相左,故而提出问题,进行探讨。Some standards of brake drum for heavy-duty vehicles at home and abroad were compared, and the failure mechanism of brake drum is summarized. The number of carbide and phosphorus eutectic in the metallographic structure of brake drum is different in each standard. For example, the number of carbide and phosphor eutectic in brake drum produced by one manufacturer is much higher than that of other standards, the mechanical properties are not bad but higher than those of other standards, and there is no difference in the machinability, which has been verified in many years of market applications. This is contrary to the general cognition. Therefore, these questions are raised in the article to discuss.

关 键 词：载重汽车制动鼓标准 失效机理 碳化物+磷共晶 力学性能 机加工性 疲劳性试验 

分 类 号：U463.51[机械工程—车辆工程]