摘要
对断裂螺栓进行宏观和微观检验、化学成分分析,结果表明:除碳的质量分数略高于标准值外,其余化学元素均符合标准要求,螺栓头部断裂的主要原因是由于成形量计算不准确,导致螺栓头部金属流线紊乱、出现断裂导致产品在进行楔负载试验时出现脱头现象。
The analysis of macro morphology,micro morphology and chemical composition were carried out on the fractured bolt. The analysis showed that all of chemical elements were accord with the standard requirements except mass fraction of carbon. The main reason for the head of the bolt cracked was the inexact calculation of formed amount.So the metal streamline disorders and fracture caused the failure on the head.
出处
《物理测试》
CAS
2015年第5期40-42,共3页
Physics Examination and Testing
关键词
六角螺栓
脱头
失效分析
hex bolt
fracture on head
fracture analysis
