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Regulation test method for friction temperature, and pin sample for the same

A test method and friction body technology, applied in the direction of temperature control, machine/structural component testing, thermometer, etc., to achieve the effect of reducing friction surface temperature, low cost, and improving friction and wear performance

Active Publication Date: 2008-12-10
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no reports on the adjustment and control methods of friction temperature at home and abroad.

Method used

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  • Regulation test method for friction temperature, and pin sample for the same
  • Regulation test method for friction temperature, and pin sample for the same
  • Regulation test method for friction temperature, and pin sample for the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 , figure 2 , image 3 As shown, the structure of the pin sample used in the method of this embodiment is composed of a friction body 1 and a pin body 2 in the rear section. The thermal conductivity coefficients of the friction body 1 and the pin body 2 are different, and the friction body 1 and the pin body 2 are mechanically fitted as follows: Integral structure, in order to ensure that the interfaces are in contact with each other when inlaid, it is assembled with interference fit, and the interference is 0.15mm. In the radial direction and axial direction of the pin sample, there are temperature measuring holes for placing thermocouples, and the thermocouple monitoring test method is used for testing. Because the temperature of the friction surface temperature when the friction pair slides is very unstable, the present invention adopts the method of setting a temperature measuring hole on the pin sample and installing a nickel-chromium-nickel-sili...

Embodiment 2

[0032] The forced thermal conduction combined pin samples with different thermal conductivity Ti6Al4V, 45 steel, red copper and Ti6Al4V mechanical inlay were used for comparative experiments.

[0033] The results show that the Ti6Al4V-Copper with the best thermal conductivity has the lowest friction temperature, and the Ti6Al4V-Ti6Al4V with the worst thermal conductivity has the highest friction temperature ( Figure 6 ). If the friction temperature and thermal conductivity of Ti6Al4V-Ti6Al4V pin samples are used as base 1 for comparison, the relative friction temperature and relative thermal conductivity of Ti6Al4V-Copper and Ti6Al4V-Steel show an inverse relationship ( Figure 7 ). It shows that the greater the thermal conductivity, the lower the friction temperature.

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Abstract

The invention relates to the regulation test of friction temperature which belongs to a method and simultaneously relates to a regulation test and pin sample structure which belongs to the test technology field. The method of the invention comprises the following steps: (1) the pin sample structure is divided into a friction body and a pin body on the back section and the friction body and the pin body are fixed into one integrated structure; (2) the friction body and the pin body are respectively made of materials with different thermal conductivities; (3) temperature measuring holes for placing thermocouples are respectively arranged near to the friction surface of the pin sample in radial direction and axial direction. The combined pin with front and back metal mechanical embedded sections is adopted and the thermal conduction capacity of the front section metal is changed through changing the material of the back section metal to regulate the friction temperature. Temperature measuring points which are distributed in radial direction and axial direction are adopted for measuring temperature simultaneously to monitor the temperature measuring stability of the thermocouples. Realizing the stability for measuring temperature, the regulation test of the friction temperature can obtain reliable friction temperature data, satisfy the requirement for regulating the friction temperature, ensuring the reliability of the regulation test of the friction temperature and is provided with wide application prospect.

Description

technical field [0001] The invention relates to a control test of friction temperature, which belongs to a method, and also relates to a pin sample for the control test, which belongs to the technical field of testing. Background technique [0002] The measurement technology of friction temperature is a key technology in the field of tribology. With the increasing speed of moving parts, a large amount of friction heat will lead to a substantial increase in the temperature of the contact surface of the friction pair, causing a series of complex physical and chemical processes in the contact area. , resulting in deterioration of tribological properties. There is a very complex relationship between the degree of deterioration and critical conditions and many factors such as tribological conditions, material factors, environmental factors, and heat transfer capabilities. Among them, the accurate measurement and regulation of friction temperature is an important factor that restr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/00G01K7/02G05D23/00G01M19/00G01M99/00
Inventor 张永振邱明铁喜顺杜三明陈跃
Owner HENAN UNIV OF SCI & TECH
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