拉钢系统驱动轴的断裂分析  

Fracture Analysis of the Drive Axle

作　　者：易宁[1] 陈兴元[1] 陈武 

机构地区：[1]攀枝花钢铁研究院,攀枝花617000 [2]攀钢轨梁厂

出　　处：《物理测试》1999年第3期31-34,共4页Physics Examination and Testing

摘　　要：研究了钢轨生产线上拉钢系统驱动轴发生的早期断裂。其断口形貌及裂纹扩展花样表明该轴是因变截面部位严重的应力集中而引起旋转弯曲扭转疲劳断裂。增大圆角半径是防止此类断裂的有效方法。A drive axle of 45 steel operating the rail transfer bank in a rail mill fractured at one end after very short service. The examination of the fracture morphology and crack growth pattern showed that the axle failed in rotational-bending and torsion fatigue that resulted from severe stress concentration by change of section. Increasing fillet radii is the only way to prevent such failure in the futrue.

关 键 词：驱动轴 疲劳断裂 失效分析 拉钢系统 钢轨 冷床 

分 类 号：TG333.3[金属学及工艺—金属压力加工]