| 35CrMnSiA高强度螺栓断裂失效分析 |
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| 引用本文： | 杨兴林,张俊苗,陈宇光.35CrMnSiA高强度螺栓断裂失效分析[J].江苏科技大学学报(社会科学版),2008,22(5). |
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| 作者姓名： | 杨兴林 张俊苗 陈宇光 |
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| 作者单位： | [1]郑州机电工程研究所,河南郑州450015 [2]江苏科技大学机械工程学院,江苏镇江212003 |
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| 摘 要： | 采用理化实验对实装实验中断裂的35CrMnSiA高强度螺栓进行了失效分析.结果表明,该型螺栓在实装实验中发生的断裂不同于其在预装中发生的氢脆断裂,符合应力腐蚀断裂的特征.结合螺栓实际受力情况、工作环境综合分析,得出了螺栓在实装实验中发生的断裂属于海洋大气环境造成的应力腐蚀断裂.提出了以更换镀层、提高成品的检测和分选能力来提高螺栓抗延迟断裂能力.
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| 关 键 词： | 高强度螺栓 35CrMnSiA钢 失效分析 应力腐蚀 |
Fracture analysis of 35CrMnSiA high strength bolt |
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| YANG Xinglin,ZHANG Junmiao,CHEN Yuguang.Fracture analysis of 35CrMnSiA high strength bolt[J].Journal of Jiangsu University of Science and Technology:Natural Science Edition,2008,22(5). |
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| Authors: | YANG Xinglin ZHANG Junmiao CHEN Yuguang |
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| Institution: | YANG Xinglin1,2,ZHANG Junmiao2,CHEN Yuguang1(1.Zhengzhou Mechanical , Electrical Project Research Institute,Zhengzhou Henan 450015,China)(2.School of Mechanical Engineering,Jiangsu University of Science , Technology,Zhenjiang Jiangsu 212003,China) |
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| Abstract: | Physics and chemistry experiments are adopted to investigate the fractures of 35CrMnSiA high-strength bolt in real assemble tests.The results show that those failures in real assemble tests are different from the hydrogen-induced cracking failures happened in experimental assemble tests,but meet features of stress corrosion cracking.Taking the stress and working environment of those bolts into account,corrosive condition of the sea air causes the stress corrosion cracking of bolts.Changing the plating,impro... |
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| Keywords: | highstrength bolt 35CrMnSiA steel failure analysis stress corrosion cracking |
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