High-temperature and high-pressure water environment normal fretting wear test device

Abstract

The invention provides a high-temperature and high-pressure water environment normal fretting wear test device, which comprises a kettle body with a high-temperature and high-pressure water environment, wherein a guide rail with a lock is transversely arranged in the kettle body, a first fixing seat used for fixing a first sample is arranged on the guide rail with the lock, a transverse driving mechanism is arranged outside the kettle body, a transmission rod is arranged on the transverse driving mechanism, the transmission rod is movably arranged on the side wall of the kettle body in a penetrating manner, the length direction of the transmission rod is parallel to the length direction of the guide rail with the lock, a second fixing seat for fixing a second sample is arranged at one end, far away from the transverse driving mechanism, of the transmission rod, a force sensor is arranged on the transmission rod and is positioned outside the kettle body, the transverse driving mechanism and the force sensor are both electrically connected to a control system, a normal fretting wear test in a high-temperature and high-pressure water environment can be simulated, fretting wear test parameters are adjusted in real time according to data obtained by the sensor in the test process, and the test accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of fretting wear test devices, and in particular relates to a normal fretting wear test in a high-temperature and high-pressure water environment. Background technique [0002] Fretting wear refers to a kind of composite wear caused by extremely small relative motion between the contact surfaces of two metals. In the water environment, mechanical components often vibrate slightly due to fluctuations in the flow field, and mechanical components of different materials undergo fretting wear due to vibration contact until they fail. Key components such as steam generator heat transfer tubes and fuel rod claddings of pressurized water reactor nuclear power units are located in high-temperature and high-pressure water environments, which are prone to failure due to fretting wear, which affects the safe operation of nuclear power plants. Therefore, in-depth study of the fretting wear behavior of key components can...

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Problems solved by technology

[0003] However, most of the current fretting wear test devices can only perform mechanical wear (tangential wear) caused by high-speed friction in ordinary environments, and cannot simulate fretting wear tests in high-temperature and high-pressure water environments; a few can simulate high-temperature and high-pressure water environments. The fretting wear test device is also mainly composed of a traditional fatigue machine and an autoclave, which cannot perform a normal wear test (normal impact test), and has a small scope of application; even if some fretting wear test equipment can perform a normal fretting wear test, It is also impossible to control the test parameters such as fretting amplitude, fretting frequency, and normal force in real time according to the actual measured value, so as to truly simulate the fretting wear state of each key component in actual work, so as to obtain accurate test data, and provide designers with Improve the performance of key components to provide a reference

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