CN101319986A - Friction temperature regulation and control test method and pin sample for friction temperature regulation and control test - Google Patents
Friction temperature regulation and control test method and pin sample for friction temperature regulation and control test Download PDFInfo
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- CN101319986A CN101319986A CNA2007100545431A CN200710054543A CN101319986A CN 101319986 A CN101319986 A CN 101319986A CN A2007100545431 A CNA2007100545431 A CN A2007100545431A CN 200710054543 A CN200710054543 A CN 200710054543A CN 101319986 A CN101319986 A CN 101319986A
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- friction
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- pin sample
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- 238000010998 test method Methods 0.000 title claims description 15
- 238000012360 testing method Methods 0.000 title abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000012546 transfer Methods 0.000 abstract description 4
- 238000009529 body temperature measurement Methods 0.000 abstract description 3
- 239000007769 metal material Substances 0.000 abstract 1
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 9
- 238000005259 measurement Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- DBUTVDSHVUGWOZ-UHFFFAOYSA-N [Si].[Ni].[Cr].[Ni] Chemical compound [Si].[Ni].[Cr].[Ni] DBUTVDSHVUGWOZ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000005676 thermoelectric effect Effects 0.000 description 1
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Abstract
The invention relates to a regulation and control test of friction temperature, belongs to a method, and also relates to a regulation and control test and a pin sample structure, belonging to the technical field of test. The method of the invention comprises the following steps: (1) dividing the pin sample structure into a friction body and a pin body at the rear section, wherein the friction body and the pin body are fixed into an integral structure; (2) the friction body and the pin body are respectively made of materials with different heat conductivity coefficients; (3) temperature measuring holes for placing thermocouples are respectively arranged at the positions close to the friction surface of the pin sample in the radial direction and the axial direction. The combined pin mechanically embedded in the front section and the rear section of metal is adopted, and the heat transfer capacity of the metal at the front section is changed by changing the metal material at the rear section, so that the aim of adjusting the friction temperature is fulfilled; and the temperature is measured simultaneously by adopting the radial and axial temperature measuring points so as to monitor the temperature measuring stability of the thermocouple. The invention not only realizes the stability of temperature measurement and can obtain reliable friction temperature data, but also meets the requirement of adjusting the friction temperature, ensures the reliability of the regulation and control test of the friction temperature and has wide application prospect.
Description
Technical field
The present invention relates to a kind of regulation and control test of friction temperature, belong to method, also relate to a kind of this regulation and control test simultaneously and use the pin sample, belong to technical field of measurement and test.
Background technology
The measuring technology of friction temperature is the gordian technique of tribological field, along with the operating speed of moving component is more and more higher, a large amount of heat of friction cause friction pair surface in contact temperature to raise significantly, have caused a series of complicated physical and chemical processes in the contact region, cause the deterioration of tribological property.The degree of this deterioration and critical condition and tribology condition, material factor, environmental factor and heat-transfer capability etc. be all to be very complicated relation between multifactor, and wherein the accurate measurement of friction temperature and regulation and control are important technology difficult problems of the many tribological field development of restriction.At present, the method for testing of friction temperature mainly contains thermocouple method, thermal resistance method, radiation method etc.Thermocouple temperature measurement is a temperature of measuring friction surface according to the thermoelectric effect principle, belong to the contact temperature-measuring method, in order to measure the friction surface temperature more exactly, thermopair need be placed in about 1mm place under the friction surface, more then measurement result is more inaccurate apart from the interface.The thermal resistance method utilizes metal or the temperature variant principle of semi-conductive resistance value to measure the friction surface temperature, and there is the narrower shortcoming of temperature-measuring range in it.The most frequently used radiation method is the infrared radiation method, and it utilizes the infra-red intensity of body surface radiation to depend on that the principle of object temperature tests, and its shortcoming is to demarcate difficulty, measurement environment is required high.
In fact, the measurement of friction surface temperature is very complicated.Because the distribution situation in friction surface temperature field and contactant surface geometric shape, the thermal physical characteristic of friction pair material, physical dimension, process conditions and radiating condition are relevant.Therefore,, need to describe more exactly the dynamic friction temperature of friction process, and control friction surface temperature reaches the purpose of control rubbing wear in order deeply to understand the influence degree of friction temperature to tribological property.At present, the adjustment control method of friction temperature is not seen report both at home and abroad.
Summary of the invention
The object of the present invention is to provide a kind of regulation and control method of testing of friction temperature, the purpose that reduce the friction surface temperature to reach, improves friction and wear behavior.
Simultaneously, the present invention also aims to provide a kind of regulation and control method of testing pin sample of this friction temperature, to realize effectively regulating the purpose of control friction surface temperature.
To achieve these goals, technical program of the present invention lies in adopting a kind of regulation and control method of testing of friction temperature, this method comprises the steps:
(1) will sell the shank that sample structure is divided into friction piece and back segment, friction piece and the shank structure that is fixed as one;
(2) friction piece adopts the different material of coefficient of heat conductivity respectively with shank;
(3) at the radial and axial nearby thermometer hole of placing thermopair that is respectively arranged with of the rubbing surface of pin sample.
Described friction piece cooperates with shank cast setting and is structure as a whole, and the surface of contact of friction piece and shank is an interference fit.
The thermometer hole of described axial setting is at least two, and it distributes with linear fashion.
The described thermometer hole that radially is provided with is at least two, itself and axial being positioned on the same xsect from the nearer thermometer hole of rubbing surface.
Simultaneously, technical program of the present invention also lies in adopting a kind of regulation and control method of testing pin sample of friction temperature, described pin sample structure is made up of the shank of friction piece and back segment, friction piece is different with the coefficient of heat conductivity of shank, friction piece and the shank structure that is fixed as one is at the radial and axial nearby thermometer hole of placing thermopair that is respectively arranged with of the rubbing surface of pin sample.
Described friction piece cooperates with shank cast setting and is structure as a whole, and the surface of contact of friction piece and shank is an interference fit.
The thermometer hole of described axial setting is at least two, and it distributes with linear fashion.
The described thermometer hole that radially is provided with is at least two, itself and axial being positioned on the same xsect from the nearer thermometer hole of rubbing surface.
Described shank is preferably the red copper metal.
Because the pin sample structure that method of the present invention adopts is made up of the shank of friction piece and back segment, friction piece is different with the coefficient of heat conductivity of shank, friction piece cooperates with shank cast setting and is structure as a whole, what the shank of back segment adopted is that coefficient of heat conductivity is bigger, lead well behaved metal, adopt this kind method can change the heat-transfer capability of friction piece, friction temperature obviously reduces than the friction temperature that existing gold-sprinkled belongs to material, thereby reach the adjusting friction temperature, the purpose of control friction and wear behavior; The radial and axial thermometer hole of placing thermopair that is respectively arranged with at the pin sample adopts thermopair control and measuring method to test, and guaranteed the stability of thermometric, and this method is simple.Pin sample of the present invention adopts the combination pin of cast setting, does not have the seam quality problem of solder bond, therefore, and the combination pin reliable in quality, and mounting or dismounting are convenient, with low cost.With regulation and control temp measuring method of the present invention,, reach the purpose that reduces the friction surface temperature, improves friction and wear behavior by changing the friction surface temperature that the back segment metal changes the leading portion metal.Method of the present invention can adopt the shank material of different coefficient of heat conductivity according to different requirement of engineering, to regulate friction temperature effectively.Find that through experiment the friction surface temperature of the Ti6Al4V group of alloys dowel pin of back segment employing red copper metal has reduced by 600 ℃ than the friction temperature of single Ti6Al4V alloy.
Description of drawings
Fig. 1 is the structural representation of pin sample of the present invention;
Fig. 2 is the location diagram of pin sample point for measuring temperature of the present invention;
Fig. 3 is the A-A cut-open view of Fig. 2;
Fig. 4 is the relation curve of pin sample friction temperature and fraction time;
Fig. 5 is the relation curve of pin sample friction temperature and velocity pressure;
Fig. 6 is the influence curve figure of the capacity of heat transmission and friction temperature;
Fig. 7 is relative friction temperature and the graph of relation of relative coefficient of heat conductivity.
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the pin sample structure that the method for present embodiment adopts is made up of the shank 2 of friction piece 1 and back segment, friction piece 1 is different with the coefficient of heat conductivity of shank 2, friction piece 1 cooperates with shank 2 cast settings and is structure as a whole, the interface is in contact with one another when inlaying for assurance, adopt interference fit, the magnitude of interference is 0.15mm.The radial and axial thermometer hole of placing thermopair that is respectively arranged with at the pin sample adopts thermopair control and measuring method to test.Because the temperature of the frictional surface temperature when friction pair slides is very unstable, the present invention adopts the method that thermometer hole is set and nickel chromium-nickel silicon thermocouple is installed on the pin sample, the temperature of measuring distance rubbing surface diverse location is by the variation of temperature trend consistent accuracy of judging thermocouple temperature measurement whether.In order to measure the axial temperature of pin sample, on the pin sample, be provided with thermometer hole 3,4,5 respectively, bore dia φ 2mm, dark 5mm apart from friction surface 3,6,9mm place; In order to measure the radial temperature of pin sample, thermometer hole 6 and thermometer hole 7 are set respectively on the pin sample, these two holes and thermometer hole 3 on same sagittal plane, bore dia φ 2mm, dark 5mm is with in the thermopair patchhole and fix.Present embodiment is to adopt the thermometric stability of 5 while thermometrics with the monitoring thermopair.
What the back segment shank in the present embodiment adopted is red copper, and red copper has good electrical conductivity, thermal conductivity and diamagnetism, and the pin sample is the Ti6Al4V-Copper pin sample that red copper is inlayed.
Pin sample and the GCr15 bearing steel of Ti6Al4V alloy, Ti6Al4V and red copper being inlayed (Ti6Al4V-Copper) carry out studies show that of dry friction, by the Ti6Al4V-Copper combination pin sample after the red copper improvement, its friction temperature is starkly lower than Ti6Al4V alloy (see figure 4).In the experiment condition scope, friction temperature reduces amplitude can reach 667 ℃ of (see figure 5)s.
This explanation, under the condition that does not change the friction pair materials, the heat-transfer capability that changes sample by version can obviously change the surface temperature of friction pair, therefore, adopting the combination pin (being made up of shank and friction piece that coefficient of heat conductivity is different) of forcing heat conduction is to reduce the effective measures of surface of friction pair temperature.
Embodiment 2
Adopt the pressure heat conduction combination pin sample of Ti6Al4V, 45 steel, red copper and Ti6Al4V cast setting formation to compare test respectively with different coefficient of heat conductivity.
The result shows that the friction temperature of the Ti6Al4V-Copper that the capacity of heat transmission is best is minimum, the friction temperature of the Ti6Al4V-Ti6Al4V that the capacity of heat transmission is the poorest the highest (Fig. 6).Compare if do radix 1 with Ti6Al4V-Ti6Al4V pin sample friction temperature and coefficient of heat conductivity, relative friction temperature value and the relative thermal conductivity value of Ti6Al4V-Copper and Ti6Al4V-Steel present inverse relationship (Fig. 7).Illustrate that coefficient of heat conductivity is big more, its friction temperature is low more.
It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (9)
1, a kind of regulation and control method of testing of friction temperature is characterized in that, this method comprises the steps:
(1) will sell the shank that sample structure is divided into friction piece and back segment, friction piece and the shank structure that is fixed as one;
(2) friction piece adopts the different material of coefficient of heat conductivity respectively with shank;
(3) at the radial and axial nearby thermometer hole of placing thermopair that is respectively arranged with of the rubbing surface of pin sample.
2, the regulation and control method of testing of friction temperature according to claim 1 is characterized in that: described friction piece cooperates with shank cast setting and is structure as a whole, and the surface of contact of friction piece and shank is an interference fit.
3, the regulation and control method of testing of friction temperature according to claim 2, it is characterized in that: the thermometer hole of described axial setting is at least two, and it distributes with linear fashion.
4, the regulation and control method of testing of friction temperature according to claim 3 is characterized in that: the described thermometer hole that radially is provided with is at least two, itself and axial being positioned on the same xsect from the nearer thermometer hole of rubbing surface.
5, a kind of regulation and control method of testing pin sample as arbitrary described friction temperature among the claim 1-4, it is characterized in that: described pin sample structure is made up of the shank of friction piece and back segment, friction piece is different with the coefficient of heat conductivity of shank, friction piece and the shank structure that is fixed as one is at the radial and axial nearby thermometer hole of placing thermopair that is respectively arranged with of the rubbing surface of pin sample.
6, the regulation and control method of testing pin sample of friction temperature according to claim 5 is characterized in that: described friction piece cooperates with shank cast setting and is structure as a whole, and the surface of contact of friction piece and shank is an interference fit.
7, the regulation and control method of testing pin sample of friction temperature according to claim 6, it is characterized in that: the thermometer hole of described axial setting is at least two, and it distributes with linear fashion.
8, the regulation and control method of testing pin sample of friction temperature according to claim 7 is characterized in that: the described thermometer hole that radially is provided with is at least two, itself and axial being positioned on the same xsect from the nearer thermometer hole of rubbing surface.
9, the regulation and control method of testing pin sample of friction temperature according to claim 8, it is characterized in that: described shank is preferably the red copper metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100545431A CN101319986B (en) | 2007-06-08 | 2007-06-08 | Regulation test method for friction temperature, and pin sample for the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100545431A CN101319986B (en) | 2007-06-08 | 2007-06-08 | Regulation test method for friction temperature, and pin sample for the same |
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| Publication Number | Publication Date |
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| CN101319986A true CN101319986A (en) | 2008-12-10 |
| CN101319986B CN101319986B (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100545431A Active CN101319986B (en) | 2007-06-08 | 2007-06-08 | Regulation test method for friction temperature, and pin sample for the same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441612A (en) * | 2016-11-25 | 2017-02-22 | 中国矿业大学 | Three-point fusion temperature measurement system and method of friction pair |
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2007
- 2007-06-08 CN CN2007100545431A patent/CN101319986B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441612A (en) * | 2016-11-25 | 2017-02-22 | 中国矿业大学 | Three-point fusion temperature measurement system and method of friction pair |
| CN106441612B (en) * | 2016-11-25 | 2023-09-22 | 中国矿业大学 | Friction pair three-point fusion temperature measurement system and temperature measurement method |
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| Publication number | Publication date |
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| CN101319986B (en) | 2011-01-12 |
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