圆柱螺旋弹簧氢脆断裂失效分析  

Hydrogen Brittle Fracture Failure Analysis of Column Spiral Spring

作　　者：邱文鹏[1] 常序华 王仁智[2] 

机构地区：[1]中钢集团郑州金属制品研究院,450001 [2]北京航空材料研究院,100095

出　　处：《金属制品》2007年第1期24-27,共4页Metal Products

摘　　要：对圆柱螺旋弹簧的断裂行为进行研究,结果表明:制造工艺引入到弹簧中的拉应力以及酸洗工艺渗入弹簧表层的氢原子是导致弹簧发生延迟断裂的主要原因,其断裂方式是一种典型的氢脆断裂。在制造工艺上控制弹簧表层的拉应力水平以及控制或避免环境中氢原子的扩散渗入,把镀锌前除氢改为镀锌后除氢,能有效地避免氢脆断裂的发生。To research the fracture behavior of column spiral spring. The result indicates that the tensile stress brought in spring by manufacture process and the hydrogen atoms filtered surface layer by pickling are main causes for delay fracture of spring, which is a kind of typical hydrogen brittle fracture. It can avoid hydrogen brittle fracture taking place effectively to control tensile stress level of spring surface layer in manufacture process, to control or avoid hydrogen atoms in circumstance to diffuse and filter, and to change galvanizing after hydrogen removing into hydrogen removing after galvanizing.

关 键 词：圆柱螺旋弹簧 残余应力 酸蚀性介质 表面处理 氢脆断裂 工艺改进 

分 类 号：TG162.74[金属学及工艺—热处理] TG178[金属学及工艺—金属学]