CN101661009B - Method and device for measuring dynamic contact heat exchange coefficient of high-temperature solid interface - Google Patents
Method and device for measuring dynamic contact heat exchange coefficient of high-temperature solid interface Download PDFInfo
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- CN101661009B CN101661009B CN2008100130230A CN200810013023A CN101661009B CN 101661009 B CN101661009 B CN 101661009B CN 2008100130230 A CN2008100130230 A CN 2008100130230A CN 200810013023 A CN200810013023 A CN 200810013023A CN 101661009 B CN101661009 B CN 101661009B
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Abstract
The invention relates to a method and a device for measuring the dynamic contact heat exchange coefficient of a high-temperature solid interface, which are particularly suitable for measuring the dynamic contact heat exchange coefficients of the high-temperature solid interfaces of metals, ceramics and composite materials. The measuring device is mainly provided with a vacuum chamber, a hydraulic cylinder, a cold-end test sample, an industrial personal computer, a heating system, a fixed chuck, a hot-end test sample, a temperature-measuring thermocouple, a mobile chuck and the like, wherein in the vacuum chamber, the cold-end test sample is clamped on the mobile chuck and the hot-end test sample is clamped on the fixed chuck; after the hot-end test sample is heated, a hydraulic impact loading system is started to allow the cold-end test sample to complete contacting the hot-end test sample at a certain speed or a certain contact pressure and keep in a contact and conductive state; and the industrial personal computer acquires related data in a contact process and performs calculation processing to obtain the dynamic contact heat exchange coefficient of the solid interface of two kinds of materials. The method and the device can solve the problems of extremely low temperature range, difficult realization of dynamization of a heat transfer process and the like of the prior measurement of the dynamic contact heat exchange coefficient of the solid interface.
Description
Technical field:
The present invention relates to the solid interface contact heat exchange coefficient field of measuring technique, specifically a kind of measuring method of dynamic contact heat exchange coefficient of high-temperature solid interface and measurement mechanism are particularly suitable for the measurement of metal, pottery and the compound substance dynamic contact heat exchange coefficient of solid at high temperature.
Background technology:
Thermo-contact is an important phenomenon that is present in numerous engineerings fields such as Aero-Space, machine-building, chemical metallurgy, electronic information, Thermal Power Engineering and the scientific research.Along with the development of heat transfer technology, the measurement of contact heat exchange coefficient is especially in the material forming field, and the measurement of the coefficient of heat transfer receives publicity day by day between interfaces at high temperature such as metal, pottery and compound substance.
The Chinese invention patent application: " a kind of method and apparatus of measuring solid interface contact heat exchange coefficient " (application number 200610047121.7, publication number CN1877313A) introduced a kind of method and apparatus of measuring solid interface contact heat exchange coefficient.The technical essential of this patented claim is: adopt heating rod to be connected with cooling stick and by the mode that pressure apparatus is exerted pressure, make industrial computer pass through temperature control instrument collecting temperature signal, show and analyze.The weak point of this patented claim:, be only applicable to the measurement of the steady state heat transfer process solid interface contact heat exchange coefficient in medium and low temperature interval below 600 ℃ owing to the restriction of measuring method and device.For temperature range more than 600 ℃ and dynamic heat transfer process, also lack relevant data report.
Summary of the invention:
In order to overcome in the existing solid interface contact heat exchange coefficient measurement, the deficiency that temperature range is on the low side, diabatic process is difficult to realize mobilism, one of purpose of the present invention provides a kind of measuring method of dynamic contact heat exchange coefficient of high-temperature solid interface, utilize radiation optically focused or LASER HEATING and hydraulic shock load mode, realize the contactless Fast Heating and the dynamic load of dynamic contact heat exchange coefficient of high-temperature solid interface test sample, and then obtain contact heat exchange coefficient by handling.
Another object of the present invention provides a kind of measurement mechanism of dynamic contact heat exchange coefficient of high-temperature solid interface, be applicable to that dynamically (solid interface contact heat exchange coefficient of contact velocity 0.01mm/s～2000mm/s, contact pressure 0～600MPa) diabatic process is measured, and uses the measurement that this device can be realized dynamic contact heat exchange coefficient of high-temperature solid interface in wide temperature interval (150～1300 ℃).
Technical solution of the present invention is as follows:
A kind of measuring method of dynamic contact heat exchange coefficient of high-temperature solid interface comprises the steps:
(1) according to the sample holder area of bed, two kinds of detected materials are processed into prismatic cylinder sample, and its surface in contact are carried out grinding process with the sand paper of same model, have identical surfaceness to guarantee it.
(2) to all the experiment used thermopair demarcate, and with industrial computer on the data acquisition card connection.Gather, show and handle the temperature value of thermopair in real time by industrial computer, and control the heating power supply of heating system by heating controller.
(3) will measure with the uniform successively same side surface that is welded to two samples of thermopair.
(4) according to measurement requirement, in vacuum chamber, the cold junction sample is installed in mobile chuck, the hot junction sample is installed in fixed chuck, and adjusts the gap between two samples, closed vacuum chamber.
(5) starting mechanical pump makes vacuum chamber reach low vacuum state (vacuum tightness 5 * 10
-1Pa-1 * 10
-1Pa), restarting diffusion pump makes vacuum chamber meet the requirements of high vacuum state (vacuum tightness 5 * 10
-3Pa-1 * 10
-3Pa).
(6) radiation optically focused or LASER HEATING system start working, and the heating end of hot junction sample is heated rapidly to 150～1300 ℃ of design temperatures (firing rate is 50～200 ℃/second).Making heating system continue heating hot junction sample by thermocouple measurement and heating controller feedback measures under the temperature default until temperature stabilization.
(7) start the hydraulic pressure impact loading system, move chuck by Driven by Hydraulic Cylinder with contact velocity control model or contact pressure control model, make the cold junction sample with certain speed or certain contact pressure finish with the hot junction sample contact and keep in touch conducted state; Wherein, contact velocity 0.01mm/s～2000mm/s, contact pressure 0～600MPa.The selection of contact velocity and contact pressure is the needs according to test objective, be the test specification that device can reach to scope; In actual mechanical process, it is zero state that contact pressure can be arranged, and promptly the force sensor measuring value is zero pure contact condition;
(8) industrial computer will be gathered the related data in the contact process and carry out computing, thereby obtain the dynamic contact heat exchange coefficient of solid interface of two kinds of materials.
(9) after measurement finishes, close radiation optically focused or LASER HEATING system, unloading hydraulic shock loading system is let out vacuum, treats to take out behind the sample natural cooling.
A kind of measurement mechanism of dynamic contact heat exchange coefficient of high-temperature solid interface, this measurement mechanism are provided with vacuum chamber, hydraulic cylinder, hydrostatic control relay, cold junction sample, speed pickup, force transducer, sealing line concentration pipe, hot junction galvanic couple, industrial computer, heating system, fixed chuck, hot junction sample, lubricant, temperature thermocouple and mobile chuck; Hydraulic cylinder is connected with the mobile chuck of the cold junction sample that is installed, and hydraulic cylinder links to each other with industrial computer by the hydrostatic control relay, the data acquisition card connection of speed pickup on the mobile chuck and force transducer and industrial computer; Be used for the data acquisition card connection of the thermopair of thermometric on cold junction sample and the hot junction sample by sealing line concentration pipe on the vacuum chamber and industrial computer; The hot junction galvanic couple that is used for hot junction sample thermometric on the fixed chuck is used for linking to each other with industrial computer to the heating system of hot junction sample heating by the data acquisition card connection on sealing line concentration pipe and the industrial computer.
Described heating system is provided with heating power supply, heating pilot relay, condenser mirror, xenon lamp, and the heating power supply input end is connected with industrial computer by the heating pilot relay, and the heating power supply output terminal connects xenon lamp, and a side of xenon lamp is provided with condenser mirror; The output signal of industrial computer is after the heating pilot relay amplifies, and the working current of control heating power supply, and then the working temperature of control xenon lamp by the effect of condenser mirror, heat the hot junction sample of fixed chuck clamping.
Described heating system is provided with heating power supply, heating pilot relay, laser heater, and the heating power supply input end is connected with industrial computer by the heating pilot relay, and the heating power supply output terminal connects laser heater; The output signal of industrial computer is controlled the working current of heating power supply after the heating pilot relay amplifies, and then the hot junction sample of control laser heater heating fixed chuck clamping.
Under the situation of needs, the contact interface of hot junction sample and cold junction sample is smeared the Changing Pattern that lubricant is investigated the interface contact heat exchange coefficient in advance.
Can be provided with radiation resistance material aluminium foil or thermal reflecting coating in the described vacuum chamber and coat cabinet wall, to reduce the heat radiation influence of sample.
Compared with prior art, the present invention has more following advantage:
(1) can realize the measurement of dynamic contact heat exchange coefficient of high-temperature solid interface.Compare with device with existing measuring method, the inventive method and device can be realized the measurement of short time heat exchanging process, and be more approaching with real heat processing and forming technological process.
(2) can realize the measurement of the dynamic contact heat exchange coefficient of solid interface in the higher temperature scope.Compare with device with existing measuring method, the inventive method and device can be realized the heating rapidly and efficiently of sample, and temperature range expands to 1300 ℃, satisfies the hot-working test request of metal, pottery and compound substance etc.
(3) possess the hydraulic shock loading system, can the contact velocity control model and contact pressure control model dual mode realize the measurement of the dynamic contact heat exchange coefficient in interface.Compare with device with existing measuring method, the inventive method and device can be chosen the control mode of contact mode flexibly according to test request.
(4) possesses the vacuum test environment.Compare with device with existing measuring method, the inventive method and device can be realized the measurement of the dynamic contact heat exchange coefficient of solid interface under certain vacuum environment, avoid the influence of sample high-temperature oxydation to experimental result.
(5) possess radiation resistance materials such as aluminium foil or thermal reflecting coating and coat the vacuum chamber inwall.Compare with device with existing measuring method, the inventive method and device can reduce the influence of sample heat radiation to experimental result.
Description of drawings:
Fig. 1 is the schematic diagram that the present invention adopts radiation optically focused type of heating measuring method.
Fig. 2 is the schematic diagram that the present invention adopts LASER HEATING mode measuring method.
Fig. 3 is the measurement mechanism structural representation that the present invention adopts radiation optically focused type of heating.
Fig. 4 is the measurement mechanism structural representation that the present invention adopts the LASER HEATING mode.
Among the figure, 1 vacuum chamber; 2 hydraulic cylinders; 3 hydrostatic control relays; 4 cold junction samples; 5 speed pickups; 6 force transducers; 7 sealing line concentration pipes; 8 hot junction galvanic couples; 9 industrial computers; 10 heating power supplies; 11 heating pilot relays; 12 condenser mirrors; 13 xenon lamps; 14 fixed chucks; 15 hot junction samples; 16 lubricants; 17 temperature thermocouples; 18 move chuck; 19 laser heater.
Embodiment:
Specify present embodiment below in conjunction with Fig. 1 and Fig. 3.
Measurement mechanism of the present invention is made up of vacuum chamber 1, hydraulic cylinder 2, hydrostatic control relay 3, cold junction sample 4, speed pickup 5, force transducer 6, sealing line concentration pipe 7, hot junction galvanic couple 8, industrial computer 9, heating power supply 10, heating pilot relay 11, condenser mirror 12, xenon lamp 13, fixed chuck 14, hot junction sample 15, lubricant 16, temperature thermocouple (eight groups) 17 and mobile chuck 18.Wherein: vacuum chamber 1 can be realized certain vacuum tightness by external vacuum extractor, to reduce sample the influence of oxidation to experimental result takes place at high temperature; There are radiation resistance materials such as aluminium foil or thermal reflecting coating to coat cabinet wall in the vacuum chamber 1, to reduce the heat radiation influence of sample; Hydraulic cylinder 2 is connected with the mobile chuck 18 of the cold junction sample 4 that is installed, and realizes the dynamic contact process of solid interface by the mode of control or speed; Hydraulic cylinder 2 links to each other with industrial computer 9 by hydrostatic control relay 3, and the output signal of industrial computer 9 is after hydrostatic control relay 3 amplifies, and control hydraulic cylinder 2 moves; Speed pickup 5 on the mobile chuck 18 and force transducer 6 carry the data acquisition card connection with the plate of industrial computer 9, gather the action message of mobile chuck 18 in real time, comprise power and velocity amplitude; Eight groups of thermopairs 17 that are used for thermometric on cold junction sample 4 and the hot junction sample 15 carry the data acquisition card connection by the plate of the sealing line concentration pipe on the vacuum chamber 17 and industrial computer 9, guarantee the air-tight state of vacuum chamber 1 in the test process; The hot junction galvanic couple 8 that is used for sample 15 thermometrics in hot junction on the fixed chuck 14 also carries the data acquisition card connection by the plate on sealing line concentration pipe 7 and the industrial computer 9; Have data acquisition, processing and control signal output services that industrial computer 9 that plate carries data collecting card is used for finishing whole test process; Heating power supply 10 input ends are connected with industrial computer 9 by heating pilot relay 11, and heating power supply 10 output terminals connect xenon lamp 13, and a side of xenon lamp 13 is provided with condenser mirror 12; The output signal of industrial computer 9 is controlled the working current of heating power supply 10 after heating pilot relay 11 amplifies, and then the working temperature of control xenon lamp 13; By the effect of condenser mirror 12, the hot junction sample 15 of heating fixed chuck 14 clampings; Under the situation of needs, hot junction sample 15 can be smeared the Changing Pattern that lubricant 16 is investigated the interface contact heat exchange coefficient in advance with the contact interface of cold junction sample 4, and lubricant 16 can adopt boron nitride, graphite or glass lubricant etc.
Measuring process comprises the steps:
(1) process 10 millimeters of diameters respectively, long 20 millimeters TC4 titanium alloy and H13 mould steel cylinder sample carry out grinding process with 200,400 and No. 800 sand paper to its surface in contact, have identical surfaceness to guarantee it.
(2) to all the experiment used thermopair demarcate, and with industrial computer on the data acquisition card connection.
(3) will measure with the uniform successively same side surface that is welded to two samples of thermopair.
(4) in vacuum chamber H13 mould steel sample is installed in mobile chuck, TC4 titanium alloy sample is installed in fixed chuck, and the gap of adjusting between two samples is 10 millimeters, closed vacuum chamber.
(5) start mechanical pump and make vacuum chamber reach low vacuum state, vacuum tightness is 5 * 10
-1Pa; Restart diffusion pump and make vacuum chamber reach high vacuum state, vacuum tightness is 5 * 10
-3Pa.
(6) radiation optically focused heating system (condenser mirror 12, xenon lamp 13) is started working, and the heating end of TC4 titanium alloy sample is heated rapidly to 960 ℃ of design temperatures (firing rate is 150 ℃/second).By thermocouple measurement and heating controller feedback make heating system continue heating TC4 titanium alloy sample until temperature stabilization at 960 ℃.
(7) start the hydraulic pressure impact loading system, move chuck by Driven by Hydraulic Cylinder with the contact velocity control model, make H13 mould steel sample with the speed of 35 mm/second finish with TC4 titanium alloy sample contact and keep in touch conducted state.
(8) industrial computer will be gathered the related data in the contact process and carry out computing, be the dynamic contact heat exchange coefficient in interface under the 35 mm/second situations thereby obtain TC4 titanium alloy and H13 mould steel at contact velocity.Among the present invention, carry out the calculating of the coefficient of heat transfer according to related data, can adopt routine techniques, also can adopt the Chinese invention patent application: " a kind of method and apparatus of measuring solid interface contact heat exchange coefficient " (application number 200610047121.7, publication number CN1877313A).
(9) after measurement finishes, close radiation optically focused heating system, unloading hydraulic shock loading system is let out vacuum, treats to take out behind TC4 titanium alloy and the H13 mould steel sample natural cooling.
Specify present embodiment below in conjunction with Fig. 2 and Fig. 4.
Measurement mechanism of the present invention is made up of vacuum chamber 1, hydraulic cylinder 2, hydrostatic control relay 3, cold junction sample 4, speed pickup 5, force transducer 6, sealing line concentration pipe 7, hot junction galvanic couple 8, industrial computer 9, heating power supply 10, heating pilot relay 11, laser heater 19, fixed chuck 14, hot junction sample 15, lubricant 16, temperature thermocouple (eight groups) 17 and mobile chuck 18.Wherein: vacuum chamber 1 can be realized certain vacuum tightness by external vacuum extractor, to reduce sample in the influence of high temperature generation oxidation to experimental result; There are radiation resistance materials such as aluminium foil or thermal reflecting coating to coat cabinet wall in the vacuum chamber 1, to reduce the heat radiation influence of sample; Hydraulic cylinder 2 is connected with the mobile chuck 18 of the cold junction sample 4 that is installed, and realizes the dynamic contact process of solid interface by the mode of control or speed; Hydraulic cylinder 2 links to each other with industrial computer 9 by hydrostatic control relay 3, and the output signal of industrial computer 9 is after hydrostatic control relay 3 amplifies, and control hydraulic cylinder 2 moves; Speed pickup 5 on the mobile chuck 18 and force transducer 6 carry the data acquisition card connection with the plate of industrial computer 9, gather the action message of mobile chuck 18 in real time, comprise power and velocity amplitude; Eight groups of thermopairs 17 that are used for thermometric on cold junction sample 4 and the hot junction sample 15 carry the data acquisition card connection by the plate of the sealing line concentration pipe on the vacuum chamber 17 and industrial computer 9, guarantee the air-tight state of vacuum chamber 1 in the test process; The hot junction galvanic couple 8 that is used for sample 15 thermometrics in hot junction on the fixed chuck 14 also carries the data acquisition card connection by the plate on sealing line concentration pipe 7 and the industrial computer 9; Have data acquisition, processing and control signal output services that industrial computer 9 that plate carries data collecting card is used for finishing whole test process; Heating power supply 10 input ends are connected with industrial computer 9 by heating pilot relay 11, and heating power supply 10 output terminals connect laser heater 19; The output signal of industrial computer 9 is controlled the working current of heating power supply 10 after heating pilot relay 11 amplifies, and then the hot junction sample 15 of control laser heater 19 heating fixed chucks 14 clampings; Under the situation of needs, hot junction sample 15 can be smeared the Changing Pattern that lubricant 16 is investigated the interface contact heat exchange coefficient in advance with the contact interface of cold junction sample 4, and lubricant 16 can adopt boron nitride, graphite, glass lubricant etc.
Measuring process comprises the steps:
(1) processes 10 millimeters of diameters respectively, (Amet100 is U.S.'s trade mark to long 20 millimeters Amet100 alloy steel, high-strength steel) and H13 mould steel cylinder sample, its surface in contact is carried out grinding process, have identical surfaceness to guarantee it with 200,400 and No. 800 sand paper.
(2) to all the experiment used thermopair demarcate, and with industrial computer on the data acquisition card connection.
(3) will measure with the uniform successively same side surface that is welded to two samples of thermopair.
(4) in vacuum chamber H13 mould steel sample is installed in mobile chuck, Amet100 alloy steel sample is installed in fixed chuck, and the gap of adjusting between two samples is 10 millimeters, closed vacuum chamber.
(5) start mechanical pump and make vacuum chamber reach low vacuum state, vacuum tightness is 1 * 10
-1Pa; Restart diffusion pump and make vacuum chamber reach high vacuum state, vacuum tightness is 1 * 10
-3Pa.
(6) LASER HEATING system (laser heater 19) starts working, and the heating end of Amet100 alloy steel sample is heated rapidly to 890 ℃ of design temperatures (firing rate is 200 ℃/second).By thermocouple measurement and heating controller feedback make heating system continue heating Amet100 alloy steel sample until temperature stabilization at 890 ℃.
(7) start the hydraulic pressure impact loading system, move chuck by Driven by Hydraulic Cylinder with the contact pressure control model, make H13 mould steel sample with the pressure of 200MPa finish with Amet100 alloy steel sample contact and keep in touch conducted state.
(8) industrial computer will be gathered the related data in the contact process and carry out computing, be the dynamic contact heat exchange coefficient in interface under the 200MPa situation thereby obtain Amet100 alloy steel and H13 mould steel in contact pressure.Among the present invention, carry out the calculating of the coefficient of heat transfer according to related data, can adopt routine techniques, also can adopt the Chinese invention patent application: " a kind of method and apparatus of measuring solid interface contact heat exchange coefficient " (application number 200610047121.7, publication number CN1877313A).
(9) after measurement finishes, close radiation optically focused heating system, unloading hydraulic shock loading system is let out vacuum, treats to take out behind Amet100 alloy steel and the H13 mould steel sample natural cooling.
Claims (6)
1. the measuring method of a dynamic contact heat exchange coefficient of high-temperature solid interface is characterized in that, comprises the steps:
(1) according to the sample holder area of bed, two kinds of detected materials are processed into prismatic cylinder sample, and its surface in contact are carried out grinding process with the sand paper of same model, have identical surfaceness to guarantee it;
(2) the used thermopair of all experiments is demarcated, and with industrial computer on the data acquisition card connection, gathers, show and handle the temperature value of thermopair in real time by industrial computer, and pass through to heat the heating power supply that pilot relay is controlled heating system;
(3) will measure with the uniform successively same side surface that is welded to two samples of thermopair;
(4) according to measurement requirement, in vacuum chamber, the cold junction sample is installed in mobile chuck, the hot junction sample is installed in fixed chuck, and adjusts the gap between two samples, closed vacuum chamber;
(5) start mechanical pump and make vacuum chamber reach low vacuum state, vacuum tightness 5 * 10
-1Pa-1 * 10
-1Pa; Restart diffusion pump and make vacuum chamber meet the requirements of high vacuum state, vacuum tightness 5 * 10
-3Pa-1 * 10
-3Pa;
(6) heating system is started working, the heating end of hot junction sample is heated to 150～1300 ℃ of design temperatures, firing rate is 50～200 ℃/second, makes heating system continue heating hot junction sample by thermocouple measurement and heating pilot relay feedback and measures under the temperature default until temperature stabilization;
(7) start the hydraulic pressure impact loading system, move chuck by Driven by Hydraulic Cylinder with contact velocity control model or contact pressure control model, make the cold junction sample with certain speed or certain contact pressure finish with the hot junction sample contact and keep in touch conducted state; Wherein, contact velocity 0.01mm/s～2000mm/s, contact pressure 0～600MPa;
(8) industrial computer will be gathered the related data in the contact process and carry out computing, thereby obtain the dynamic contact heat exchange coefficient of solid interface of two kinds of materials;
(9) after measurement finishes, close heating system, unloading hydraulic shock loading system is let out vacuum, treats to take out behind the sample natural cooling.
2. the special measurement device of the measuring method of the described dynamic contact heat exchange coefficient of high-temperature solid interface of claim 1 is characterized in that: this measurement mechanism is provided with vacuum chamber (1), hydraulic cylinder (2), hydrostatic control relay (3), cold junction sample (4), speed pickup (5), force transducer (6), sealing line concentration pipe (7), hot junction galvanic couple (8), industrial computer (9), heating system, fixed chuck (14), hot junction sample (15), lubricant (16), temperature thermocouple (17) and mobile chuck (18); Hydraulic cylinder (2) is connected with the mobile chuck (18) of the cold junction sample (4) that is installed, hydraulic cylinder (2) links to each other with industrial computer (9) by hydrostatic control relay (3), the data acquisition card connection of speed pickup (5) on the mobile chuck (18) and force transducer (6) and industrial computer (9); The thermopair (17) that is used for thermometric on cold junction sample (4) and the hot junction sample (15) is by the data acquisition card connection of the sealing line concentration pipe (7) on the vacuum chamber (1) with industrial computer (9); The hot junction galvanic couple (8) that is used for hot junction sample (15) thermometric on the fixed chuck (14) is used for linking to each other with industrial computer (9) to the heating system of hot junction sample (15) heating by the data acquisition card connection on sealing line concentration pipe (7) and the industrial computer (9).
3. according to the described measurement mechanism of claim 2, it is characterized in that: heating system is provided with heating power supply (10), heating pilot relay (11), condenser mirror (12), xenon lamp (13), heating power supply (10) input end is connected with industrial computer (9) by heating pilot relay (11), heating power supply (10) output terminal connects xenon lamp (13), and a side of xenon lamp (13) is provided with condenser mirror (12); The output signal of industrial computer (9) is after heating pilot relay (11) amplifies, the working current of control heating power supply (10), and then the working temperature of control xenon lamp (13), by the effect of condenser mirror (12), the hot junction sample (15) of heating fixed chuck (14) clamping.
4. according to the described measurement mechanism of claim 2, it is characterized in that: heating system is provided with heating power supply (10), heating pilot relay (11), laser heater (19), heating power supply (10) input end is connected with industrial computer (9) by heating pilot relay (11), and heating power supply (10) output terminal connects laser heater (19); The output signal of industrial computer (9) is controlled the working current of heating power supply (10) after heating pilot relay (11) amplifies, and then the hot junction sample (15) of control laser heater (19) heating fixed chuck (14) clamping.
5. according to the described measurement mechanism of claim 2, it is characterized in that: under the situation of needs, hot junction sample (15) is smeared the Changing Pattern that lubricant (16) is investigated the dynamic contact heat exchange coefficient in interface in advance with the contact interface of cold junction sample (4).
6. according to the described measurement mechanism of claim 2, it is characterized in that: have radiation resistance material aluminium foil or thermal reflecting coating to coat cabinet wall in the vacuum chamber (1).
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| CN2008100130230A CN101661009B (en) | 2008-08-29 | 2008-08-29 | Method and device for measuring dynamic contact heat exchange coefficient of high-temperature solid interface |
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| CN2008100130230A CN101661009B (en) | 2008-08-29 | 2008-08-29 | Method and device for measuring dynamic contact heat exchange coefficient of high-temperature solid interface |
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| CN103616406B (en) * | 2013-11-25 | 2016-01-06 | 山东理工大学 | A kind of device for measuring solid-affixed tactile interface heat exchange coefficient and measuring method thereof |
| CN104297287B (en) * | 2014-06-16 | 2017-01-25 | 怡维怡橡胶研究院有限公司 | Compression heat generation detector and method thereof |
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