摩托车气门外弹簧的断裂分析  

FRACTURE ANALYSIS OF THE MOTOR VALVE SPRING

作　　者：林丽珍 曹标[2] 谭莹[2] 陈明[2] 

机构地区：[1]广东省电力工业学校,广州510520 [2]广州出入境检验检疫局化矿金属材料检测中心,广州510623

出　　处：《理化检验（物理分册）》2006年第2期95-96,105,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：某摩托车在行驶1 500km后气门外弹簧发生断裂。采用扫描电镜、金相显微镜、等离子光谱发射仪等分析手段,对其断口进行了分析。结果表明,断裂呈现典型的疲劳断裂特征,材料表面缺陷是引起该弹簧疲劳断裂的主要原因。Air valve spring used in motorcycle produced by a factory of Guangdong failured after the motorcycle drived for 1 500kin. The fracture was analysed by using SEM. metallography and ICP-AES. The results showed that the fracture was of typical fatigue fracture, and surface defects were the main factor resulting in the failure of the air valve spring.

关 键 词：弹簧 断裂 原因分析 

分 类 号：TH135[机械工程—机械制造及自动化]