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High-speed high-temperature multifunctional friction and abrasion tester

A friction and wear test, multi-functional technology, applied in the direction of testing wear resistance, measuring devices, instruments, etc., can solve the problem that the linear velocity of the friction pair movement and the experimental temperature cannot reach high speed, and cannot simulate the high-speed and high-temperature scraping wear of a turbojet engine Working conditions and other issues, to achieve the effect of compact structure, low manufacturing cost, and avoid complex structure

Inactive Publication Date: 2011-07-06
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of high-speed high-temperature multi-functional friction and wear testing machine, solves the problems existing in the prior art that the linear velocity of the friction pair motion and the test temperature cannot reach high speed (more than 100 meters per second) and high temperature (up to 100 meters per second). 1200°C), it is impossible to simulate the high-speed, high-temperature scraping and wear conditions of the turbojet engine gas path seal

Method used

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  • High-speed high-temperature multifunctional friction and abrasion tester

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Such as Figure 5 As shown, when performing the scraping friction and wear experiment, firstly, the frequency conversion speed regulation parameters and acceleration curve of the electric spindle 1 are used to achieve and control the spindle speed required by the experiment. Then the torque meter 31 for speed measurement and torque measurement is zero-adjusted, so that the no-load speed of the rotating sample reaches the condition required by the stable test, and the torque value when not loaded is calibrated to zero. The rotating sample 3 is a single or multiple tooth-shaped scraping sample, which is installed on the rotating disk A2 on the rotating spindle 34, and its size and quality need to meet the static and dynamic balance conditions. The force measuring system 28 is arranged on one side of the longitudinal sliding table 27, and the other side of the longitudinal sliding table 27 is provided with a transverse sliding table 29. The translational sample 4 is instal...

Embodiment 2

[0056] The change compared with embodiment 1 is:

[0057] Such as Figure 6 As shown, the rotating sample 3 is installed on the outer circumference of the rotating disc B16 at one end of the high-speed rotating main shaft 34 , and the rotating disc A2 is separated from the rotating main shaft 34 and fixed on the base 18 . The rotating sample 3 is ring-shaped, and its outer diameter is smaller than the rotating diameter of the scraping test, which is beneficial to the preparation of the sample. Its outer circumference is the test surface, which forms a ring / block friction pair with the block-shaped translational sample 4, and performs continuous or intermittent friction motion.

[0058] The process of carrying out the ring block friction and wear test is as described in Example 1. In this embodiment, experimental parameters such as speed, temperature, feed depth and feed speed can also be actively changed to obtain a variety of experimental schemes, including: adjustment of m...

Embodiment 3

[0060] The change compared with embodiment 2 is:

[0061] Such as Figure 7As shown, the difference lies in the formation of the pin / disk friction pair. The translational sample 4 is pin-shaped and transformed into a feed motion in the X-axis direction. The annular rotating sample 3 is installed on the outer end surface of the rotating disc B16 at one end of the rotating spindle 34. The outer end surface of the annular rotating sample 3 is the test surface, forming a circumferential wear track. At this time, in order to ensure the force balance of the rotating main shaft 34, the position of the translational sample 4 must be symmetrical, so there is no movement in the Y-axis direction. The force-measuring system 28 is set on the top of the longitudinal slide 27, and the other side of the longitudinal slide 27 is provided with a transverse slide 29, and the translational sample 4 is installed on the sample fixing bracket 30 on one side of the force-measuring system 28. Becaus...

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Abstract

The invention relates to a high-speed high-temperature multifunctional friction and abrasion tester which is especially applicable to simulating the service conditions of the sealed pairs of turbojet engines and solves the problems that the friction pairs in the prior art can not meet the needs of high speed (over 100m / s) and high temperature (up to 1200DEG C) in the aspects of motion line speed and experiment temperature and can not simulate the high-speed high-temperature friction and abrasion conditions of the gas path sealing of the turbojet engines and the like. The tester is provided with a rotation main shaft, a rotation disc, a numerical control sliding table and heating devices, wherein the rotation disc is arranged on the rotation main shaft, a rotation sample is arranged on therotation disc, the numerical control sliding table is arranged at one side of the rotation main shaft, a translation sample is arranged on the numerical control sliding table and is opposite to the rotation sample to form a friction pair; and the heating devices are arranged at the side of the rotation sample and at the side of the translation sample. By adopting the invention, the high-speed stable rotation of the rotation main shaft of the tester and the rapid heating of surface of the friction pair sample can be realized.

Description

technical field [0001] The invention relates to a high-speed, high-temperature multifunctional friction and wear testing machine, which is suitable for evaluating the friction and wear performance of materials at high speed and high temperature, and is especially suitable for simulating the service conditions of turbojet engine sealing and matching pairs, and evaluating sealing coatings and materials Scraping properties at high speed and high temperature. Background technique [0002] With the continuous expansion of the engineering field, the service conditions of materials are becoming more and more harsh. When the relative linear velocity exceeds 100m / s and the service temperature exceeds 1000℃, the friction pair must meet the strict tribological performance requirements at high speed and high temperature. For example, in order to improve the gas efficiency of a turbojet engine, a scrapable high-temperature sealing material should be selected for the gas path seal, which...

Claims

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Application Information

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IPC IPC(8): G01N3/56G01N3/02
Inventor 李曙刘阳易凡王鹏侯思焓张荣禄段德莉
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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