某型摩托车大链轮失效分析
Failure Analysis for Big Chain Wheel of Certain Motorcycle
夏致斌
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作者单位：株洲职业技术学院 机械工程系, 湖南 株洲 412001
中文关键字：裂纹； 高频淬火； 链轮结构； 正火处理
英文关键字：crack; high-frequency quenching; chain wheel structure; normalizing
中文摘要：某公司125型摩托车大链轮发现大量裂纹，经过对裂纹件进行形貌分析和冶金分析，找到产生裂纹的真正原因，即链轮结构、机加工应力和表面粗糙度等因素的综合作用导致高频淬火裂纹。据此制定了相关的纠正措施，并经初步验证，可满足生产需要。
英文摘要：A large number of cracks were found in big chain wheels of 125 style motorcycle. The actual reasons which resulted in the high-frequency quenching cracks were found by appearance analysis and metallurgy analysis, which are configuration of chain wheel, stresses of machine work, and surface roughness. The correlative rectifying measures are made, and has met the requirements of production by preliminary validated.