Subminiature minimal invasion high-temperature creep fatigue testing machine and application thereof

Abstract

The invention discloses a subminiature minimal invasion high-temperature creep fatigue testing machine and the application thereof. The subminiature minimal invasion high-temperature creep fatigue testing machine mainly includes a driving system, a loading device, a constant temperature atmosphere furnace, a temperature control system, a high temperature gas protection system, a measurement control system and a water cooling system, wherein the loading manner of the machine is top vertical loading; a testing sample is positioned between an upper fixing platform and a lower fixing platform; and when loading is performed, a servo motor controls a lower loading rod to move upwards, a jumper bar is contacted with an upper loading rod, the lower end of the jumper bar is used for testing sample stamping through a pressure head. Aiming at an existing structure and a domain structure at a high temperature, the testing machine provided by the invention can be used for obtaining various high temperature performance of the material and estimating residual service life creep, safety operation state and the like of the high temperature structure, is convenient to operate, is uniform in testing temperature and high in testing precision, can be used for testing various high temperature performances such as high-temperature creep performance, high-temperature relaxation performance, high-temperature creep fatigue performance and high-temperature breaking toughness of the material.

Description

technical field [0001] The invention relates to the field of testing high-temperature performance of materials, more specifically, to a testing machine for high-temperature performance of materials using tiny samples and its application. Background technique [0002] At present, with the rapid development of China's economy, the demand for energy is getting higher and higher, and the environmental pollution is also increasing. Therefore, improving energy utilization efficiency, developing new energy sources, and reducing harmful gases and greenhouse gas emissions have become economically sustainable. An important support point for development. While developing new energy sources, improving the operating parameters of industrial devices is the most effective means to improve the efficiency of existing energy use and material conversion. Therefore, modern industrial devices such as power generation, petroleum, chemical industry, and metallurgy are all developing towards high ...

AI Technical Summary

Problems solved by technology

At present, the conventional high-temperature performance test requires a relatively large geometric size of the sample. For example, the standard creep sample size is about 100mm, which will be relatively destructive to the in-service structure, so it is impossible to directly sample from the in-service structure.

In addition, due to the complexity of the high-temperature structure, its joints are often made of welded structures, and in the case of high-temperature service, early failure is likely to occur in the heat-affected zone of the joint, which has an important impact on the life of the high-temperature structure

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