材质为40Cr的螺栓在使用过程中发生断裂,为探索断裂原因,用光电直读光谱仪、光学显微镜、扫描电子显微镜对该螺栓断裂处进行了化学成分、宏观、微观等分析。研究结果表明：螺栓的化学成分符合产品的技术要求,螺栓断裂主要是由于其表面脱碳以及头部和杆部结合处应力集中所致。在以上分析的基础上提出了相应的改进措施。
In order to ascertain the fracture reason of screw made of 40 Cr steel,chemical composition,macrostructure,microstructure of the screw were analyzed by means of optical emission spectrometer,light microscope and SEM.The results showed that the chemical composition of the screw can meet the technical requirements of the product,but the surface decarburization and the stress concentration of the joint area of the head and stem are the major causes of the fracture.Based on the analysis,improvement measures are put forward.
参考文献
| [1] | Netto T A;Ferraz U S;Esterfen S F.The effect corrosion defects on the burst pressure of Pipelines[J].Journal of Constructional Steel Research,2005(61):1185-1204. |
| [2] | 上海交通大学<金属断口分析>编写组.金属断口分析[M].北京:国防工业出版社,1979 |
| [3] | Bolssaitis P;Kahlweit M.The internal oxidation of Cu-Si alloys[J].Acta Metallurgica,1967(15):765-769. |
| [4] | 王弘,高庆.40Cr钢超高周疲劳性能及疲劳断口分析[J].中国铁道科学,2003(06):93-98. |
| [5] | 伍超群,况敏,张鸣,张中兴.新氢压缩机活塞杆断裂分析[J].理化检验-物理分册,2003(02):103-105. |
| [6] | 陈珏,潘红良,唐世华.膨胀干燥机螺杆轴断裂分析[J].化工装备技术,2009(01):56-59,63. |
| [7] | 由向群,杜洪建,谷志刚.换热器紧固螺栓的应力腐蚀断裂分析[J].理化检验-物理分册,2007(01):40-42. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%