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Coating friction and wear performance test method equivalent to engine rack test run examination

An engine bench, friction and wear technology, applied in the direction of testing wear resistance, etc., can solve the problems that cannot reflect the working conditions of the engine turbine pump dynamic seal, and the reference value is not large, so as to increase the reliability and safety factor of development, improve The effect of development efficiency and reduction of development cost

Active Publication Date: 2019-09-24
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating friction and wear test methods used in previous researches at home and abroad are mainly aimed at relatively mild wear conditions, and the wear process is very different from the working process of the engine bench hot test turbine pump dynamic seal, which cannot reflect the engine turbine. The actual service conditions of the pump seal, therefore, the reference value of the friction and wear performance evaluation results of the coating is not great

Method used

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  • Coating friction and wear performance test method equivalent to engine rack test run examination
  • Coating friction and wear performance test method equivalent to engine rack test run examination
  • Coating friction and wear performance test method equivalent to engine rack test run examination

Examples

Experimental program
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Effect test

Embodiment 1

[0056] A method for testing the friction and wear performance of a coating that is equivalent to an engine short-range bench test test under severe wear conditions with a high PV value includes the following steps.

[0057] (1) The friction and wear test is carried out by the start-stop assessment method under the condition of high PV value in a short period of time

[0058] Use the start-stop assessment friction and wear testing machine to investigate the friction and wear performance of the coating friction pair (moving ring 1 / static ring 2) (see figure 1 ), spraying deposited Al on the surface of the moving ring 2 o 3 coated, the stationary ring is made of copper alloy (see figure 2 ). Here the base material of the moving ring is stainless steel, and the size of the moving ring and the static ring are the same: outer diameter Φ 外 =75mm, inner diameter Φ 内 =53mm, thickness h=20mm. figure 1 The testing machine shown is used for the start-stop evaluation friction and we...

Embodiment 2

[0063] A method for testing the friction and wear performance of a coating that is equivalent to an engine short-range bench test test under severe wear conditions with a high PV value includes the following steps.

[0064] (1) The friction and wear test is carried out by the start-stop assessment method under the condition of high PV value in a short period of time

[0065] The moving ring base material, the size of the moving ring and the size of the static ring are all the same as those in Example 1. The surface of the moving ring is sprayed with Al 2 o 3 There are two types of coating and static ring materials: copper alloy and fluorine-containing copper alloy. Before the formal start-stop assessment, Al 2 o 3 Coated moving ring and copper alloy static ring, Al 2 o 3 The running-in friction test between the coating moving ring and the fluorine-containing copper alloy static ring, the two test parameters are consistent, specifically: the speed of the moving ring is 30...

Embodiment 3

[0071] A method for testing the friction and wear performance of a coating that is equivalent to an engine short-range bench test test under severe wear conditions with a high PV value includes the following steps.

[0072] (1) The friction and wear test is carried out by the start-stop assessment method under the condition of high PV value in a short period of time

[0073] The moving ring base material, the size of the moving ring and the size of the static ring are all the same as those in Example 1. The surface of the moving ring is sprayed with Al 2 o 3 Coating, static ring material is copper alloy, same as embodiment 2. Before the formal start-stop assessment, the Al 2 o 3 The running-in friction test between the coating moving ring and the copper alloy static ring, the specific parameters are: the speed of the moving ring is 5000rpm, the contact pressure of the friction surface is 0.4MPa, and the moment of inertia is 0.2kg cm s 2 , Disengaged after friction for 3s,...

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Abstract

The invention provides a coating friction and wear performance test method equivalent to an engine rack test run examination. The method comprises the following steps of (1) using a coating moving ring and a static ring to carry out pairing, carrying out a friction and wear test by using a start-stop examination test method under a high PV value work condition; and (2) repeating a start-stop examination test for several times to investigate friction and wear performance of a coating, and providing effective prediction for an engine rack test run examination effect. The method is equivalent to an engine short-range rack test run examination under a high PV value and rigorous wear work condiiton.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a coating friction and wear performance test method equivalent to an engine bench test assessment, in particular to a test method equivalent to an engine short-distance bench test assessment under severe wear conditions with high PV values Test method for friction and wear properties of coatings. Background technique [0002] Carrying capacity, reliability, environmental protection indicators and launch costs are important indicators to measure the advancement and international competitiveness of launch vehicles, especially the carrying capacity of a rocket, which represents a country's ability and strength to enter and exit space. Currently, non-toxic propellants such as kerosene, hydrogen, and oxygen are used in the United States, Russia, Japan, and the European Space Agency, and their low-earth orbit carrying capacity is more than 20 tons. The "Long March" series of launch veh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56
CPCG01N3/56
Inventor 杨凯赵华玉陶顺衍钟兴华庄寅倪金星邵芳丁传贤杨加胜
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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