Fracture cause detection of mechanical parts
Tianjin Rong Da Testing Co., Ltd. contact: Mr. Wang
Cell phone: 13102238283 QQ:3144667033
Tel: 022-23892103 WeChat: 13102238283
Fracture is the phenomenon that the metal or alloy material or mechanical products are divided into several parts under the action of force. It is a dynamic process of change, including crack initiation and propagation. Fracture failure is a mechanical component caused by the failure of mechanical equipment products can not complete the original design of the specified function. The failure types are as follows: the failure of A. cleavage fracture; B. dimple fracture; C. cleavage fracture failure failure D.; fatigue fracture; failure E. creep fracture; F. stress corrosion cracking fracture g.; intergranular fracture failure; failure of H. liquid or solid metal brittle fracture; hydrogen embrittlement fracture failure of I. J.; slip separation failure.
Fracture failure analysis, the first to understand the failure analysis program. Because the majority of mechanical components in the process of running a fracture failure, when a part of the fracture damage, it and other parts, the surrounding environment and operating personnel, and so have a very close relationship. Find the reason to find out from the design level, material quality, processing status, maintenance and assembly precision, working environment, working conditions and operation parameters in the main cause of destruction, and according to the causes of damage, mechanism, type and stage, analyzed and judged, formulate improvement measures. The fracture process is a dynamic process, direct observation and Analysis on fracture is difficult; and the fracture is static reaction fracture, if the fracture mechanism analysis can find out the fault causes, careful observation and etc.. The fracture analysis is an important method of fracture failure analysis of mechanical components because of the whole process of fracture and the initiation and propagation of crack of mechanical components. In order to get a better analysis results, the analysis method must also be supplemented by a series of other test methods, such as nondestructive testing, mechanical testing, metallographic examination, chemical analysis, X ray analysis, fracture toughness test, electron energy spectrum analysis and simulation test. Finally, the above analysis and test results and data are analyzed, and the improvement measures are put forward to write failure analysis report.