Turbine blade shroud meshing surface friction wear performance test system and method
A technology of friction and wear and turbine blades, which is applied in the field of experimentation and testing, and can solve problems such as inaccurate evaluation of friction and wear performance
Pending Publication Date: 2022-01-21
AECC SHENYANG ENGINE RES INST
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Problems solved by technology
[0006] The purpose of this application is to provide a test system and method for the friction and wear performance of the turbine blade shroud meshing surface, so as to solve the problem in the prior art that the test piece is difficult to work under actual working conditions, resulting in inaccurate evaluation of the friction and wear performance
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specific Embodiment approach
[0067] As a specific embodiment, it also includes a method for testing the friction and wear performance of the turbine blade shroud meshing surface, including:
[0068] Step S100, by analyzing the working state of the target blade shroud meshing surface, the test parameters are obtained: including friction direction, test load spectrum, temperature, time, frequency, stroke, environment, whether there is a "start-stop" process, etc.;
[0069] Step S200, determining the crystal orientation range of the meshing part of the single crystal turbine blade, analyzing the influence degree of the crystal orientation on the friction and wear performance, and selecting the orientation with the worst friction and wear performance to carry out the test;
[0070] Step S300, according to the actual size of the meshing surface of the target blade, carry out a new design of equal-area or reduced-scale test pieces and fixtures;
[0071] Step S400, installing the upper test piece 9 in the upper fi...
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The invention relates to the technical field of testing and testing, in particular to a turbine blade crown meshing surface friction and wear performance testing system, which comprises clamps including an upper clamp and a lower clamp, the upper clamp and the lower clamp being correspondingly arranged up and down; a test piece, which comprises an upper test piece and a lower test piece, wherein the upper test piece is connected with the upper clamp, the lower test piece is connected with the lower clamp, and the lower surface of the upper test piece can be in surface-surface contact with the upper surface of the lower test piece; a loading device, which is connected with the upper clamp and can drive the upper clamp and the upper test piece to rotate; and a reciprocating driving device, which is used for driving the lower test piece to reciprocate in a fixed direction. The working performance of the blade crown under the actual working condition can be accurately simulated so as to obtain an accurate test result.
Description
technical field [0001] The application belongs to the technical field of testing and testing, and in particular relates to a friction and wear performance testing system and method of a turbine blade shroud meshing surface. Background technique [0002] Turbine blade shroud meshing surfaces are effective in reducing vibration and improving turbine efficiency, and are widely used. Shroud vibration reduction mainly uses the initial assembly force between the shrouds and the back torsion force of the pre-twisted blades when the turbine rotates to obtain an appropriate initial positive pressure between the shrouds. When the blades vibrate, the meshing surfaces between the shrouds will slide relative to each other. Force digestion energy plays a vibration damping effect. [0003] Generally speaking, adding a wear-resistant layer to the meshing surface of the turbine blade shroud can improve the friction and wear performance of the meshing surface, but due to welding defects caus...
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IPC IPC(8): G01N3/56G01N3/04G01N19/02
CPCG01N3/56G01N3/04G01N19/02Y02E10/20
Inventor 李青于荣斌李艳明靳力王全马世岩郭勇韩振宇佟文伟
Owner AECC SHENYANG ENGINE RES INST