Fixture and method for clamping samples of high temperature friction testing machine
A friction testing machine and sample fixture technology, which is applied in the field of physical and chemical testing, can solve the problems of long loading time, difficulty in sample decomposition, high precision of sample shape, etc., to achieve improved consistency and accuracy, and simple decomposition process Effect
Active Publication Date: 2019-11-08
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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Problems solved by technology
Among them, the clamping method of the upper and lower static samples is embedded clamping, especially the upper static sample, due to the limitation of the position, the clamping time is longer, and the shape of the sample requires high precision; , the sample is further clamped, so it is difficult to decompose the sample; and in the process of decomposition, due to repeated beating on the sample, it will cause uneven weight loss of each batch of samples, reducing the accuracy of the test results
Method used
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[0025] like figure 1 As shown, the sample clamping device used for GW-MS500 high temperature micro-motion testing machine is mainly the upper static sample clamp 1, the first and second left limit blocks 2, 8, and the first and second right limit blocks 3, 9, the upper static sample 4, the dynamic sample 5, the bolt 6, the lower static sample 7, the lower static sample clamp 10, the dynamic sample clamp 11 and so on.
[0026] like Figure 2-5 As shown, the lower end surface of the upper static sample holder 1 has a square groove 1-2 that runs through the outer wall of the upper static sample holder 1 and communicates with the embedded groove 1-1, and the square groove 1-2 is connected with the embedded groove 1-1, etc. width.
[0027] The specific card loading method is as follows:
[0028] Put the upper static sample 4 and the lower static sample 7 into the upper static sample fixture 1 and the lower static sample fixture 10 respectively, fix the dynamic sample 5 with the ...
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The invention discloses a clamp for clamping a high temperature friction testing machine sample and a method. An upper static sample clamp is changed from a current embedded type into a square slot push-in clamp. During sample assembling, left limit blocks and right limit blocks are dismantled first, then an upper static sample block, a lower static sample block and a mobile sample block are mounted, when all the sample blocks are assembled, the left limit blocks and right limit blocks are installed. Then pre-loading is carried out, positions of the left limit blocks and right limit blocks are slightly adjusted to ensure that the limit blocks play a limiting role in the test process so as to protect the upper static sample clamp. After adjustment of the limit blocks, the test load is slightly adjusted to guarantee that the test load reaches a value specified by technical requirements, then unloading, returning of load to zero, heating and loading are carried out to perform relevant test. According to the invention, the dismantling process is simple, convenient and fast, does not cause mass loss, and improves the consistency and accuracy of test result.
Description
technical field [0001] The invention belongs to the technical field of physical and chemical detection, and relates to a fixture and a method for clamping samples of a GW-MS500 high-temperature micro-motion testing machine. Background technique [0002] The meshing surface of the aero-engine turbine blade shroud needs to be welded with a surfacing layer to enhance the wear resistance of the meshing surface; for this purpose, relevant test work is required. The maximum test temperature of GW-MS500 high temperature fretting testing machine can reach 750℃, the frequency can be freely switched between 1HZ~50HZ, its moving distance is 1mm~5mm, and the test load can be adjusted accordingly according to the needs. In view of the above characteristics, the The testing machine can be used to simulate the working conditions of the blade shroud meshing surface in the actual working process of the engine. GW-MS500 high-temperature fretting testing machine The current method of clamping...
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IPC IPC(8): G01N3/04G01N3/56
CPCG01N3/04G01N3/56G01N2203/0226G01N2203/0423
Inventor 熊勇樊国福肖清云刘学晖李巍陈昌达
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD