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Method for constructing three-dimensional abrasion map of copper-based powder metallurgy wet friction material

A technology of wet friction material and powder metallurgy, which is applied in the direction of testing wear resistance, etc., to shorten the test period and reduce the cooling time

Inactive Publication Date: 2015-05-27
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the shortcomings of the existing two-dimensional wear map and its original data acquisition, the present invention provides a method for constructing a three-dimensional wear map of copper-based powder metallurgy wet friction material

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  • Method for constructing three-dimensional abrasion map of copper-based powder metallurgy wet friction material
  • Method for constructing three-dimensional abrasion map of copper-based powder metallurgy wet friction material
  • Method for constructing three-dimensional abrasion map of copper-based powder metallurgy wet friction material

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Embodiment 2

[0086] In order to illustrate the effectiveness of the data obtained in the present invention, the inventor also carries out the following comparative experiments:

[0087] The scaling test described in the step of embodiment 1 is compared with the 1:1 bench test under the condition parameters of table 1; (the operating conditions of the two are basically the same)

[0088] Table 1 Comparison of test parameters

[0089]

[0090] The size of the friction test ring used in the 1:1 bench test is Φ520×470, and the size of the friction test ring used in the scale test is Φ67×61mm. The test results obtained from the 1:1 bench test were made Figure 8 (a), the test results obtained from the scale-down test are made into Figure 8 (b), compare Figure 8 (a) and Figure 8 (b), it can be seen that the 1:1 bench test curve is relatively smoother and less fluctuating than the scale test curve, but the basic trend of the friction curves of the two is the same, and the parameters suc...

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Abstract

The invention relates to the technical field of a friction material for a clutch and in particular provides a method for constructing a three-dimensional abrasion map of a copper-based powder metallurgy wet friction material. The method comprises the following steps: (1) carrying out friction-wear testing on the copper-based powder metallurgy wet friction material processed into a narrow band by use of a disc-to-disc friction braking testing machine according to the similarity principle to acquire the primary data of the material; (2) performing numerical treatment on the primary data to obtain source data for constructing the three-dimensional abrasion map; (3) carrying out interpolation processing on the source data by use of MATLAB software to construct the three-dimensional abrasion map of the copper-based powder metallurgy wet friction material by use of the speed, the load and the abrasion loss as coordinate parameters. According to the method, the change rule of the abrasion loss of the copper-based powder metallurgy wet friction material along with the speed and the load can be acquired based on the constructed abrasion map, the abrasion loss and the service life of the copper-based powder metallurgy wet friction material can be predicted under different working conditions and the method has important engineering application value and the theoretical guiding significance.

Description

technical field [0001] The invention relates to the technical field of friction materials for clutches, and in particular provides a method for constructing a three-dimensional wear diagram of a copper-based powder metallurgy wet friction material. Background technique [0002] With the continuous increase of the working load and rotation speed of heavy machinery such as ships, military vehicles and construction machinery, the thermal load on the clutch is increasing. In order to ensure the working stability and reliability of the clutch under high-energy and heavy-load friction conditions , which poses a higher challenge to the wear resistance, service life, safety and reliability of friction materials for clutches. Copper-based powder metallurgy wet friction materials are widely used in high-energy and heavy-duty wet clutches because of their excellent properties such as stable friction coefficient, high thermal conductivity, high wear resistance, and ability to withstand ...

Claims

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Application Information

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IPC IPC(8): G01N3/56
Inventor 姚萍屏谭慧强贡太敏
Owner CENT SOUTH UNIV
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