In-situ testing device and method for friction and wear of material under high-temperature prestress loading

Abstract

The invention relates to an in-situ testing device and method for friction and wear of a material under high-temperature prestress loading, and belongs to the field of friction and wear performance testing of the material at a high temperature. The middle of the upper portion of a rack is fixedly connected with a test cavity, prestress loading and driving modules symmetrically arranged on the two sides horizontally penetrate through the test cavity respectively and are fixedly connected with the upper portion of the rack, the prestress loading and driving modules are fixedly connected with a friction test piece, an acoustic emission in-situ monitoring module is installed on the friction test piece, a high-temperature loading module is fixed in the test cavity through a bolt and located below the friction test piece, and a friction load loading module penetrates through the upper surface of the test cavity, is supported by a supporting frame and is in bolt connection with the test cavity through a corrugated pipe. The device and method have the advantages of novel structure, modular design, simplicity in installation and maintenance, capability of researching the damage mechanism of a material under the condition of simultaneous loading of frictional wear and axial load, high heating speed, energy conservation and capability of ensuring the accuracy of experimental data.

Description

technical field [0001] The invention relates to the field of friction and wear performance testing of materials under high temperature, in particular to an in-situ testing device and method for material friction and wear under high temperature prestress loading. Background technique [0002] In the fields of material processing, hot work dies, nuclear reactors and thermoelectricity, materials such as hard alloys and hot work die steels are often used in high-temperature environments, and high-temperature wear is one of the main failure modes of such materials. High-temperature friction and wear tests The testing machine is the main means to evaluate the friction and wear properties of materials under high temperature environment, but at present this kind of testing machine has complex structure, high price, weak integration, single loading condition and single test environment. For example, Chinese patent CN103364296A discloses "A High temperature friction and wear testing m...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an in-situ testing device and method for material friction and wear under high-temperature prestressed loading to solve the existing problems of relatively complex structure, low heating rate and unfavorable modular integration

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