CN110261434A - A kind of quick thermal shock resistance examination test device - Google Patents

A kind of quick thermal shock resistance examination test device Download PDF

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Publication number
CN110261434A
CN110261434A CN201910686654.7A CN201910686654A CN110261434A CN 110261434 A CN110261434 A CN 110261434A CN 201910686654 A CN201910686654 A CN 201910686654A CN 110261434 A CN110261434 A CN 110261434A
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CN
China
Prior art keywords
test
temperature
thermal shock
sample
shock resistance
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Pending
Application number
CN201910686654.7A
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Chinese (zh)
Inventor
仝永刚
郭玥
胡永乐
邓吨英
柏林辉
蔡炎林
王斌
田楠
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Changsha University of Science and Technology
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Changsha University of Science and Technology
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Application filed by Changsha University of Science and Technology filed Critical Changsha University of Science and Technology
Priority to CN201910686654.7A priority Critical patent/CN110261434A/en
Publication of CN110261434A publication Critical patent/CN110261434A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00Investigating or analyzing materials by the use of thermal means
    • G01N25/20Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity

Abstract

The present invention provides a kind of thermal shock resistance examination test device.Apparatus of the present invention include flame heating system, sample holder telecontrol equipment, gas cooling device, temperature measuring equipment and control system, flame heating system flame temperature is up to 3000 DEG C, sample holder telecontrol equipment can three-dimensional movement adjustment specimen holder spatial position, specimen holder uses double layer hollow water-cooling structure, the logical circulating water in centre, temperature measuring equipment is made of thermocouple and double colorimetric infrared radiation thermometers, the temperature variation curve of specimen surface and the back side in test process can be recorded in real time, apparatus of the present invention thermal shock resistance examines test temperature high, thermal shock resistance examines test temperature adjustable, heating and cooling rate are big, apparatus structure is simple, sample is easy for installation, it is practical.

Description

A kind of quick thermal shock resistance examination test device
Technical field
The present invention relates to heat-resisting material performance evaluation field, the quick heat resistanceheat resistant of a kind of heat-resisting material or component is referred specifically to Pinking examines test device.
Background technique
Thermal shock resistance is that material or component resist ambient temperature change dramatically without the ability for causing to destroy, and is evaluation material The important indicator of survivability need to carry out evaluation to its thermal shock resistance, in existing material before material actual use Expect in thermal shock resistance testing experiment method, quenching technique is a kind of research method being most widely used, it first exists sample It is heated in furnace, then in air, in water or oil quenching is cooling, then, its residual mechanical properties is measured and carrys out table Levy its thermal shock resistance.
The heat-resisting material and component in the fields such as aerospace are on active service in high temperature thermal shock environment for a long time, it is necessary to under its high temperature Thermal shock resistance can be carried out evaluation, however, current material thermal shock resistance examination test device is mainly for refractory material With traditional ceramics material, one side thermal shock resistance examines test temperature lower, generally 1500oC or less, it is difficult to meet material and exist Thermal shock resistance testing requirement under higher temperature;On the other hand, the anti-thermal shock examination test device rate of heat addition is lower, causes anti-thermal shock Property test period it is long, it is at high cost, need to develop that a kind of thermal shock resistance examination test temperature is high, the big novel anti-thermal shock of the rate of heat addition Property examination test device.
Summary of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of thermal shock resistance examination test temperature height, heating and cooling rate Big novel thermal shock resistance examines test device.
Apparatus of the present invention include flame heating system, sample holder telecontrol equipment, gas cooling device, temperature measuring equipment and control System processed.
Flame heating system is by oxygen cylinder, acetylene cylinder, flowmeter, pressure reducing valve, flame gun, gas flow duct and flame gun Bracket composition, flow are calculated as glass rotameter or mass flowmenter, flow-control scope are as follows: 0-2000L/h, pressure reducing valve Control gas pressure are as follows: 0-1MPa, flame gun nozzle diameter are 2mm, and flame temperature is up to 3000oC。
Sample holder telecontrol equipment is made of tracks, bracket and specimen holder, and specimen holder presets two stations, work Position 1 adjusts test for flame temperature, and temperature test material is graphite;Station 2 is used for clamping test sample, between station 1 and 2 Distance be 50mm-300mm, specimen holder is rack-mount, and specimen holder can move up and down on bracket, movement away from From for 10-200mm, bracket is mounted below universal wheel, can adjust sample along the free movement of the direction x, y on motion guide rail The spatial position of fixture, the largest motion distance in the direction x, y are 500mm, and specimen holder uses double layer hollow water-cooling structure, intermediate Logical circulating water, is provided with a groove, depth of groove 5-20mm in sample placement location.
Gas cooling device is by air compressor, electronic control valve, electronic control valve control signal wire, gas path pipe and cold But gas tip forms, and program control switch can be used in electronic control valve, and air compressor power is 2-10kW.
Temperature measuring equipment is controlled by thermocouple, thermocouple control signal wire, double colorimetric infrared radiation thermometers and infrared radiation thermometer to be believed Number line composition, the test temperature highest 1800 of thermocoupleoC is arranged in the test sample back side, contacts with test sample, for surveying It has a try sample back temperature, double colorimetric infrared radiation thermometer test temperatures are 600-3000oC, the temperature for test sample surface.
Control system is made of controller and computer, connection sample holder telecontrol equipment, temperature measuring equipment and gas cooling Device, the motion guide rail in controller Control Assay clamping movement device, for adjusting spatial position and the thermal shock test of sample When Control Assay moved back and forth in flame heating location and gas cooling position, computer records sample table in thermal shock test in real time The temperature curve in face and the back side, controller are connect with the electronic control valve in gas cooling device, control the supply of cooling gas.
Apparatus of the present invention have the advantages that
(1) thermal shock resistance examination test temperature is high, can reach 2500oThe superhigh temperature of C or more;
(2) thermal shock resistance examination test temperature is adjustable, can be in 1000-2500oAdjustment in C temperature range;
(3) using flame heating and gas cooling, heating cooling velocity is big, and the test period is short, at low cost;
(4) it can be used for the thermal shock resistance examination test of conductive and nonconductive material, strong applicability;
(5) apparatus structure is simple, and sample is easy for installation, practical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of quick thermal shock resistance of the present invention examines test device.1 is flame heating system, 2 It is gas cooling device for sample holder telecontrol equipment, 3,4 is temperature measuring equipment, 5 is control system;101-109 is respectively flame Rifle, gas flow duct, acetylene flowmeter, oxygen flow meter, acetylene pressure reducing valve, oxygen pressure reducing valve, acetylene gas bottle, oxygen gas cylinder With flame gun carriage;201-207 be respectively specimen holder, test station 1, test station 2, cooling water inlet, cooling water outlet, Bracket and specimen holder tracks;301-305 is respectively cooling gas spray head, gas path pipe, electronic control valve, electronic control Valve control signal line and air compressor;401-404 be respectively double colorimetric infrared radiation thermometers, infrared radiation thermometer control signal wire, Thermocouple and thermocouple control signal wire;501 and 502 be respectively controller and computer.
The three-view diagram of Fig. 2 apparatus of the present invention specimen holder part.
The 3 D stereo view of Fig. 3 apparatus of the present invention specimen holder part.
Specific embodiment
Embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention., unless otherwise specified, embodiment Used in the conventional means that are well known to those skilled in the art of technological means.
The present invention provides a kind of quick thermal shock resistance examination test device, and structural schematic diagram is as shown in Fig. 1, including 1 Flame heating system, 2 sample holder telecontrol equipments, 3 gas cooling devices, 4 temperature measuring equipments, 5 control systems.
Flame heating system by 101 flame guns, 102 gas flow ducts, 103 acetylene flowmeters, 104 oxygen flow meters, 105 acetylene pressure reducing valves, 106 oxygen pressure reducing valves, 107 acetylene gas bottles, 108 oxygen gas cylinders and 109 flame gun carriages composition;Flowmeter It is glass rotameter or mass flowmenter, flow-control scope are as follows: 0-2000L/h, pressure reducing valve control gas pressure Are as follows: 0-1MPa, flame gun nozzle diameter are 2mm, and flame temperature is up to 3000oC。
Sample holder telecontrol equipment by 201 specimen holders, 202 test stations 1,203 test stations 2,204 cooling waters into Mouth, 205 cooling water outlets, 206 brackets and 207 specimen holder tracks composition;202 test stations 1 are used for flame temperature tune Section test, temperature test material are graphite;203 test stations 2 are used for clamping test sample, and the distance between station 1 and 2 is 100mm;201 specimen holders are mounted on 206 brackets, and specimen holder can move up and down on bracket, move distance 10- 200mm;Bracket is mounted below universal wheel, can be on motion guide rail along the direction x, y free movement adjustment specimen holder The largest motion distance of spatial position, the direction x, y is 500mm;Specimen holder uses double layer hollow water-cooling structure, the logical circulation in centre Water is cooling;Sample placement location is provided with a groove, depth of groove 5mm, structure is detailed in attached drawing 2 and 3.
Gas cooling device is by 301 cooling gas spray heads, 302 gas path pipes, 303 electronic control valves, 304 electronic control valves Program control switch can be used in control signal wire and 305 air compressors composition, electronic control valve, and air compressor power is 3kW。
Temperature measuring equipment is by 401 pairs of colorimetric infrared radiation thermometers, 402 infrared radiation thermometer control signal wires, 403 thermocouples and 404 Thermocouple control signal wire composition, the test temperature highest 1800 of thermocoupleoC is arranged in the test sample back side, with test sample Contact, is used for test sample back temperature, and double colorimetric infrared radiation thermometer test temperatures are 600-3000oC is used for test sample table The temperature in face.
Control system is made of 501 controllers and 502 computers, and connection sample holder telecontrol equipment, temperature measuring equipment are gentle Body cooling device;Motion guide rail in controller Control Assay clamping movement device, for adjusting spatial position and the heat of sample Control Assay is moved back and forth in flame heating location and gas cooling position when shake test;Computer is recorded in real time in thermal shock test The temperature curve of sample surfaces and the back side;Controller is connect with the electronic control valve in gas cooling device, controls cooling gas Supply.
Apparatus of the present invention use process is as follows:
Temperature test material and sample to be tested are mounted on 203 test station of specimen holder and 202 test stations respectively, adjusted Position of 201 specimen holders on 206 brackets and 207 specimen holder tracks, makes 203 test station face, 101 flame Rifle;107 acetylene cylinders, 108 oxygen cylinders are opened, 103 acetylene flowmeters, 104 oxygen flow meters, 105 acetylene pressure reducing valves and 106 are adjusted Oxygen pressure reducing valve to certain value, igniting makes flame gun burn with certain temperature;401 pairs of colorimetric infrared radiation thermometer test material tables Face and flame temperature, adjustment acetylene flow, oxygen flow and the distance between flame gun and test material, make test material Temperature reaches thermal shock test temperature;Then, start the program in controller and computer, 201 specimen holders move downward rapidly Make 202 test station material face flame guns, flame heats test sample, starts first thermal shock circulation;Sample table to be tested After face temperature reaches preset temperature, controller controls 202 test stations and moves downwardly to 301 cooling gas spray head faces rapidly Face, 303 electronic control valves and 305 air compressors are opened at the same time, blow cooling gas to tested sample, cooling to sample Controller controls 202 test stations and moves to 101 flame gun face positions rapidly upward afterwards, and first thermal shock circulation terminates, together When 101 flame guns begin to warm up test sample, start second thermal shock circulation;Controller control whole device is gradually completing default The thermal shock loop test of number, at the same time, 401 pairs of colorimetric infrared radiation thermometers and 403 thermocouple real-time testing specimen surfaces and The temperature at the sample back side records data in 502 computers;After the test, 107 acetylene cylinders, 108 oxygen cylinders are closed, 103 acetylene flowmeters, 104 oxygen flow meters, 105 acetylene pressure reducing valves and 106 oxygen pressure reducing valves, after sample is completely cooling from 202 test stations are taken out, and entire thermal shock resistance examination test is completed.

Claims (8)

1. a kind of material thermal shock resistance examines test device, which is characterized in that described device is by flame heating system, sample holder Telecontrol equipment, gas cooling device, temperature measuring equipment and control system composition.Flame heating system is by oxygen cylinder, acetylene cylinder, flow Meter, pressure reducing valve, flame gun, gas flow duct and flame gun carriage composition.Sample holder telecontrol equipment is by tracks, bracket It is formed with specimen holder, specimen holder presets two stations, and station 1 adjusts test for flame temperature, and temperature test material is Graphite;Station 2 is used for clamping test sample;Specimen holder is rack-mount, and specimen holder can be transported up and down on bracket It is dynamic;Bracket is mounted below universal wheel, can be on motion guide rail along the space of the direction x, y free movement adjustment specimen holder Position, specimen holder use double layer hollow water-cooling structure, the logical circulating water in centre.Gas cooling device by air compressor, Journey can be used in electronic control valve, electronic control valve control signal wire, gas path pipe and cooling gas sprinkler composition, electronic control valve Sequence control switch cools down test sample using compressed air.Temperature measuring equipment by thermocouple, thermocouple control signal wire, Double colorimetric infrared radiation thermometers and infrared radiation thermometer control signal wire composition, thermocouple are arranged in the test sample back side, try with test Sample contact, is used for test sample back temperature, and double colorimetric infrared radiation thermometers are used for the temperature on test sample surface.Control system by Controller and computer composition, connection sample holder telecontrol equipment, temperature measuring equipment and gas cooling device;Controller Control Assay Motion guide rail in clamping movement device, Control Assay is heated in flame when spatial position and thermal shock for adjusting sample are tested Position and gas cooling position move back and forth;Computer records the temperature curve of sample surfaces and the back side in thermal shock test in real time; Controller is connect with the electronic control valve in gas cooling device, controls the supply of cooling gas.
2. material thermal shock resistance as described in claim 1 examines test device, which is characterized in that the flame heating system stream Amount is calculated as glass rotameter or mass flowmenter, flow-control scope are as follows: 0-2000L/h, pressure reducing valve control gas pressure Power are as follows: 0-1MPa, flame gun nozzle diameter are 2mm, and flame temperature is up to 3000oC。
3. material thermal shock resistance as described in claim 1 examines test device, which is characterized in that the sample holder sportswear Setting the distance between station 1 and 2 is 50mm-300mm, and the specimen holder can move up and down on bracket, and move distance is 10-200mm, bracket are mounted below universal wheel, can be on motion guide rail along the direction x, y free movement adjustment specimen holder The largest motion distance of spatial position, the direction x, y is 500mm.
4. material thermal shock resistance as described in claim 1 examines test device, which is characterized in that set in sample placement location It is equipped with a groove, depth of groove 5-20mm.
5. material thermal shock resistance as described in claim 1 examines test device, which is characterized in that the gas cooling device institute It is 2-10kW with air compressor power.
6. material thermal shock resistance as described in claim 1 examines test device, which is characterized in that the temperature measuring equipment thermocouple Test temperature highest 1800oC, double colorimetric infrared radiation thermometer test temperatures are 600-3000oC。
7. the material thermal shock resistance as described in claim 1-6 examines test device, it is multiple to can be used for high temperature alloy, ceramics, carbon pottery The high temperature thermal shock resistance of condensation material and refractory material etc. can examine test.
8. the present invention provides use process of the present apparatus for the examination test of material at high temperature thermal shock resistance when.
CN201910686654.7A 2019-07-29 2019-07-29 A kind of quick thermal shock resistance examination test device Pending CN110261434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910686654.7A CN110261434A (en) 2019-07-29 2019-07-29 A kind of quick thermal shock resistance examination test device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910686654.7A CN110261434A (en) 2019-07-29 2019-07-29 A kind of quick thermal shock resistance examination test device

Publications (1)

Publication Number Publication Date
CN110261434A true CN110261434A (en) 2019-09-20

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Application Number Title Priority Date Filing Date
CN201910686654.7A Pending CN110261434A (en) 2019-07-29 2019-07-29 A kind of quick thermal shock resistance examination test device

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111678948A (en) * 2020-06-02 2020-09-18 四川大学 High-speed nondestructive detection method for surface defects of steel rail and implementation device thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111678948A (en) * 2020-06-02 2020-09-18 四川大学 High-speed nondestructive detection method for surface defects of steel rail and implementation device thereof

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