23MnNiMoCr54钢吊钩的失效分析及失效概率计算  

Failure Analysis and Failure Probability Calculation for 23MnNiMoCr54 Steel Hook

作　　者：金帅 王会强[1] 崔建英[2] 王艳山 许伟华 闫学兰 牛树启 程明明 JIN Shuai;WANG Huiqiang;CUI Jianying;WANG Yanshan;XU Weihua;YAN Xuelan;NIU Shuqi;CHENG Mingming(College of Mechanical and Electrical Engineering,Hebei Agricultural University,Baoding 071066,Hebei,China;Juli Sling Co.,Ltd.,Baoding 072550,Hebei,China;Baoding Dongli Machinery Co.,Ltd.,Baoding 071100,Hebei,China;Hebei Shenli rigging Group Co.,Ltd.,Baoding 071100,Hebei,China;Baoding Golden Sunshine energy equipment Technology Co.,Ltd.,Baoding 071000,Hebei,China;Baoding City Jingxiu Park,Baoding 071023,Hebei,China;Hebei Baisha tobacco Co.,Ltd.Baoding Cigarette Factory,Baoding 071051,Hebei,China)

机构地区：[1]河北农业大学机电工程学院,河北保定071066 [2]巨力索具股份有限公司,河北保定072550 [3]保定市东利机械制造股份有限公司,河北保定071100 [4]河北神力索具集团有限公司,河北保定071100 [5]保定金阳光能源装备科技有限公司,河北保定071000 [6]保定市竞秀公园,河北保定071023 [7]河北白沙烟草有限责任公司保定卷烟厂,河北保定071051

出　　处：《热处理》2025年第1期46-49,53,共5页Heat Treatment

摘　　要：23MnNiMoCr54钢吊钩在疲劳试验时未达到规定的循环次数就发生断裂,为此对吊钩进行了化学成分分析、硬度测定、金相检验、断口检验和能谱分析,同时计算了夹杂物引起的疲劳失效概率。结果表明:23MnNiMoCr54钢吊钩有脱碳层,导致其力学性能降低;吊钩有氧化物夹杂,导致其疲劳性能显著降低;表面脱碳和存在氧化物夹杂是吊钩疲劳试验时过早失效的主要原因;计算得出的夹杂物引发的吊钩疲劳失效的概率为17.4%。23MnNiMoCr54 steel hook broke before the number of cycles came up to specified value during fatigue test.The hook was subjected to chemical composition analysis,hardness measurements,metallographic examination,fracture test,and energy spectrum analysis.The probability of fatigue failure caused by inclusion was calculated.The results showed that the hook exhibited decarburized layer which resulted in its decrease in mechanical properties,and had oxide inclusions which greatly reduced its fatigue property.The surface decarburization and the presence of oxide inclusions proved to be main cause of the premature failure of hook during fatigue test.The calculated probability of hook fatigue failure caused by inclusion was 17.4%.

关 键 词：23MnNiMoCr54钢 吊钩 疲劳 夹杂物 

分 类 号：TG142.15[一般工业技术—材料科学与工程]