摘要
DL10.9级高强度螺栓有断裂情况发生。为此,对其进行硬度测定、金相检验、断口检验和能谱分析。结果发现:断裂的螺栓存在氧化物SiO2,且断口有明显的疲劳断裂特征,分析表明该螺栓是氧化物SiO2导致的疲劳断裂。据此,提出了改进螺栓结构等预防螺栓断裂的措施。
DL10.9 grade bolt ruptured.From hardness measurements,metallographic examination,fracture test and energy spectrum analysis it was seen that the ruptured bolt exhibited oxides such as SiO2and fatigue break character in its fracture,and the bolt was fatigue fracturing caused by SiO2 oxide.The precaution such as improvement in configuration of the bolt was proposed.
作者
金帅
王会强
崔建英
程明明
王艳山
闫学兰
牛树启
李文翔
JIN Shuai;WANG Huiqiang;CUI Jianying;CHENG Mingming;WANG Yanshan;YAN Xuelan;NIU Shuqi;LI Wenxiang(College of Mechanical and Electrical Engineering,Hebei Agricultural University,Baoding 071001,Hebei,China;Juli Sling Co.,Ltd.,Baoding 072550,Hebei,China;Baoding Cigarette Factory,Hebei Baisha Tobacco Co.,Ltd.,Baoding 071051,Hebei,China;Baoding Dongli Machinery Co.,Ltd.,Baoding 071100,Hebei,China;Baoding Golden Sunshine Energy Equipment Technology Co.,Ltd.,Baoding 071000,Hebei,China;Baoding Jingxiu Park,Baoding,071023,Hebei,China;Guantao Flying Machinery Equipment Manufacturing Co.,Ltd.,Handan 057750,Hebei,China)
出处
《热处理》
2025年第4期52-55,共4页
Heat Treatment
基金
河北省科技计划资助项目(20312201D)
河北省重大成果转化资助项目(21287001Z)。
关键词
高强度螺栓
疲劳断裂
氧化物
high strength bolt
fatigue fracture
cracking
oxide
