8万吨乙醛装置螺栓断裂失效分析  

Analysis of Bolt Fracture Failure about 80000 Tons of Acetaldehyde Unit

作　　者：庞勃[1] 李廷取[1] 毕学文 

机构地区：[1]吉林化工学院材料科学与工程学院,吉林吉林132022 [2]吉林石化公司电石厂丙烯酸酯车间,吉林吉林132022

出　　处：《吉林化工学院学报》2014年第9期95-98,共4页Journal of Jilin Institute of Chemical Technology

摘　　要：对乙醛装置钢结构断裂螺栓进行化学成分、金相及硬度测试分析,结合断口形貌对螺栓的断裂失效进行了分析.研究结果表明,螺栓为应力腐蚀断裂,螺杆根部表面缺陷易造成应力集中,此部位是裂纹的主要萌生地,是导致螺栓断裂的主要原因.To test and analyze the chemical composition, microstructure and hardness for the broken bolt of acetaldehyde device of steel structure, combining with analyzing the fracture through the fracture morphology of the bolt. The results show that the failure type of the broken bolt is stress corrosion cracking, screw root surface defects could easily lead to stress concentration and this part is the main crack initiation, which is the main reason of the broken bolt.

关 键 词：乙醛装置 螺栓 断裂 失效分析 

分 类 号：TG142.41[一般工业技术—材料科学与工程]