CN108398350A - One kind is for ceramic material lifting/lowering warm impact test apparatus and test method - Google Patents
One kind is for ceramic material lifting/lowering warm impact test apparatus and test method Download PDFInfo
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- CN108398350A CN108398350A CN201810099374.1A CN201810099374A CN108398350A CN 108398350 A CN108398350 A CN 108398350A CN 201810099374 A CN201810099374 A CN 201810099374A CN 108398350 A CN108398350 A CN 108398350A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/60—Investigating resistance of materials, e.g. refractory materials, to rapid heat changes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses one kind for the efficient lifting/lowering warm impact test apparatus of ceramic material and test method, belongs to the testing equipment of high-temperature ceramic materials.It includes two first environment modules (2) being overlapped from top to bottom and second environment module (8), test specimen frame leading truck (10) is housed at the top of first environment module (2), side is equipped with pneumatic pull rod (12), batch test specimen (9) is fixed in test specimen frame (11), test specimen frame (11) is inserted into test specimen frame leading truck (10), test specimen frame (11) bottom is contacted with the pneumatic pull rod (12) of stretching, and second environment module (8) bottom is equipped with buffer unit (14).It is an advantage of the invention that：In the lifting/lowering temperature thermal shock resistance test of ceramic material, it thermal shock initial temperature and target temperature span big (room temperature is to 3000 DEG C) and can accurately control, primary experiment can be carried out at the same time thermal shock test to batch test specimen, experimental enviroment is stable and test efficiency is high, and the reliability height of test result, precision are high.
Description
Technical field
The invention belongs to ceramic material thermal shock resistance testing research fields, and in particular to one kind exists for ceramic material
High efficiency lifting/lowering warm impact test apparatus under large span initial temperature and target temperature and test method.
Technical background
Ceramic material because keep higher intensity, density low under its high temperature and with good physical and chemical stability etc. it is excellent
Point is commonly used in thermal structure field, such as the thermal protection system and numbers of hot-side engine of hypersonic vehicle.It is hypersonic to fly
When row device is across atmospheric maneuvering flight, rising-cruise-decline is undergone and the processes such as anti-of dashing forward, Aerodynamic Heating is serious, causes to face
Heat up the processes such as thermal shock and cooling thermal shock, and thermal shock initial temperature and target temperature amplitude of variation are big.As high temperature
The ceramic material of structural material often warms impact process in military service course by the drastically lifting/lowering of large span temperature range
And it destroys.Therefore, studying the thermal shock resistance of ceramic material is particularly important.However, there is presently no can be real
Now heating thermal shock can also realize the experimental rig and test method of cooling thermal shock.Also, being directed at present both at home and abroad can be real
The equipment of now heating thermal shock, thermal shock initial temperature can only be room temperature；For current cooling thermal shock equipment, thermal shock
Initial temperature up to be only 2000 DEG C, it is difficult to meet currently to aircraft in practical military service process in which materials by the beginning of large span
The demand of thermal shock resistance research at beginning temperature and target temperature, therefore urgent need development can more preferably realize high-temperature ceramic materials
The experimental rig and test method of lifting/lowering temperature thermal shock resistance test.
Chinese patent literature CN104483224A disclosed " a kind of for ceramic material heating heat on January 14th, 2015
The chamber of impact ", the device include Sealing furnace and heating furnace, and heating furnace is supported on Sealing furnace inner bottom surface by heating furnace base
On, cylinder is housed, the cylinder motion bar being connect with cylinder piston, which stretches into, connects examination in Sealing furnace top center hole at the top of Sealing furnace
Part clamping device, for Sealing furnace inner top surface equipped with guide wire straight down, guide wire lower end ties up to heating across heating furnace apical pore
On holder in stove, cushion pad is laid above holder, heat-insulated carbon felt piece is plugged in heating furnace apical pore.The patent application is realized
The surface homogeneous heating of ceramic test piece, can accurately control the target temperature of thermal shock.But the experimental box is asked there are following
Topic：
1, the maximum temperature that can be built is 2000 DEG C, is much not achieved what high-temperature structural material was subjected to when being actually on active service
Heat up thermal shock target temperature；
2, the heating thermal shock test that can only realize ceramic material can not complete cooling thermal shock test；
3, thermal shock initial temperature is only room temperature, can not achieve the heating thermal shock examination under different initial temperature conditions
It tests；
4, special chamber storage test specimen is not designed before carrying out thermal shock test, and clamping test pieces are apart from heating furnace ratio
Relatively close, initial temperature is easy the hyperthermia radiation by heating furnace；
5, a test specimen can only be clamped in primary experiment, and the consuming time is permanent, and test efficiency is low.
Problem above makes this experimental box that can only realize compared with the heating thermal shock test under condition of small temperature difference, and thermal shock is initial
Temperature is only confined to that room temperature cannot be adjusted, target temperature is confined to 2000 DEG C hereinafter, test result is caused to be difficult to characterize ceramic material
Expect thermal shock resistance at a temperature of large span, seriously affects the development and application of such material.
Invention content
In view of the deficiencies of the prior art, technical problem solved by the invention is to provide a kind of for large span initial temperature
And under target temperature can realize ceramic material heating thermal shock again realize cool down thermal shock experimental rig and test side
Method, it, which can be realized from room temperature to the lifting/lowering in 3000 DEG C of large span temperature ranges, warms impact test, thermal shock initial temperature
And target temperature can accurately control, and all can arbitrarily be selected to 3000 DEG C of sections in room temperature, while primary experiment can be to criticizing
It measures test specimen and carries out thermal shock, ensure that the consistency with batch test specimen thermal shock test environment, increase measuring accuracy and significantly
Improve test efficiency.
Key technology to be solved by this invention is that technical solution in this way is realized, it include two from top to bottom
The first environment module and second environment module of overlapping, by openable and closable sealing between first environment module and second environment module
Heat-insulated hatch door isolation.The first heating furnace and the second heating furnace are respectively arranged with inside two environment modules, the first heating furnace is by
Pedestal support in one environment module, the second heating furnace are supported by second environment mould pedestal in the block.First environment module top
Equipped with test specimen frame leading truck, side is equipped with pneumatic pull rod, and batch test specimen is mounted in test specimen frame, and test specimen frame is inserted into test specimen frame leading truck
In, and the pneumatic pull rod by stretching out supports test specimen frame, second environment module bottom that buffer unit is housed.
Since first environment module and second environment module are warming up to preset thermal shock initial temperature and target temperature in advance
Degree, and the temperature controllable precise of two environment modules, adjustable extent are big (room temperature is to 3000 DEG C), test specimen passes through the card in test specimen frame
Slot and baffle are fixed, and test specimen follows test specimen frame to be dropped into second environment module from first environment module and forms thermal shock；
When the temperature of first environment module then forms cooling thermal shock process higher than the temperature of second environment module；First environment module
Temperature then forms heating thermal shock process less than the temperature of second environment module.Since batch test specimen undergoes identical heat punching simultaneously
Environment is hit, ensure that the consistency of specimen test environment, improves the reliability and precision of test result.
The solution have the advantages that：
1, in the test of ceramic material lifting/lowering temperature thermal shock resistance, thermal shock initial temperature and target can be accurately controlled
Temperature, and temperature all can be arbitrary adjustable in room temperature to 3000 DEG C of large spans；
2, heating thermal shock test can be not only carried out to ceramic test piece, but also can carry out cooling thermal shock test；
3, primary experiment can simultaneously test batch test specimen, and test efficiency is high, the reliability height of test result, precision
It is high；
4, thermal shock resistance of the various sizes of test specimen after undergoing identical thermal shock environments can be tested simultaneously, to comment
Influence of the valence sample dimensions to thermal shock resistance.
Compared with prior art, it is an advantage of the invention that：Identical size or various sizes of batch test specimen can be achieved simultaneously
Undergo the high efficiency heating thermal shock test or cooling thermal shock test under large span initial temperature and target temperature, test temperature
Can be in room temperature to accurate adjustable, test efficiency height within the scope of 3000 DEG C, the reliability height of test result, precision are high.
Description of the drawings
The description of the drawings of the present invention is as follows：
Fig. 1 is the structure chart of the present invention；
Fig. 2 is the outline drawing of test specimen frame；
Fig. 3 is surface structure block diagram of the present invention.
In figure：1, switch board, 2, first environment module, the 3, first heating furnace, 4, first environment transitional module, 5, sealing every
Hot hatch door, 6, second environment transitional module, the 7, second heating furnace, 8, second environment module, 9, test specimen, 10, test specimen frame leading truck,
11, test specimen frame, the 12, pneumatic pull rod, 13, first heating furnace base, 14, buffer unit, the 15, second heating furnace base, 16, gear
Piece, 17, card slot.
Specific implementation mode
The invention will be further described with example below in conjunction with the accompanying drawings：
As shown in Figure 1, the present invention includes two first environment modules 2 being overlapped from top to bottom and second environment module 8, two
It is isolated by the openable and closable heat-insulated hatch door 5 that seals between a environment module；First is correspondingly arranged inside two environment modules respectively to add
Hot stove 3 and the second heating furnace 7, the first heating furnace 3 are supported by pedestal 13, and the second heating furnace 7 is supported by pedestal 15.Seal insulated hold
About 5 door is respectively equipped with first environment transitional module 4 and second environment transitional module 6.2 top of first environment module is equipped with test specimen
Frame leading truck 10,2 side of first environment module are equipped with pneumatic pull rod 12.As shown in Fig. 2, being provided with card slot 17 on test specimen frame 11 and matching
Standby graphite catch 16 can fix various sizes of batch test specimen 9, while 11 bottom of test specimen frame is provided with groove, and test specimen frame 11 is inserted into
It in test specimen frame leading truck 10, is supported by the pneumatic pull rod 12 stretched out, 8 bottom of second environment module is equipped with buffer unit 14, reduces
The mechanical shock that test specimen frame 11 and test specimen 9 are subject to when falling.
First environment module 2 and second environment module 8 can be achieved from room temperature to 3000 DEG C of temperature environment.Open packing
Hot hatch door 5, while pneumatic pull rod 12 is exited, pull rod slides to the right, and test specimen frame 11 is fallen downwards vertically under the effect of gravity, simultaneously
Test specimen 9 is fallen together with test specimen frame 11, is finally stuck in the buffer unit 14 in second environment module 8.When first environment mould
The temperature of block 2 forms cooling thermal shock when being higher than the temperature of second environment module 8, when the temperature of first environment module 2 is less than the
Heating thermal shock is formed when the temperature of two environment modules 8.
It is cylinder-shaped ceramic base that first heating furnace 3 and the second heating furnace 7, which use inductance type heater sensing heating, heater,
Composite material, drum surface wind conductive copper wire.Test specimen frame 11 is made of graphite, and the material of buffer unit 14 is carbon felt.
The use process of apparatus of the present invention is：
It is first shut off the heat-insulated hatch door 5 of sealing, test specimen 9 is fixed on by card slot 17 on test specimen frame 11 and graphite catch 16
In test specimen frame 11, the position of catch 16 determines that test specimen quantity is depending on test requirements document according to the size of test specimen；Then by test specimen
Frame 11 is inserted into test specimen frame leading truck 10, stretches out pneumatic pull rod 12, and pull rod is in a left side and stretches state at this time, is used to support test specimen frame
11；Start heating system, the first heating furnace 3 and the second heating furnace 7 are begun to warm up respectively, set the burner hearth of two heating furnaces
Temperature carries out after the temperature of the first heating furnace 3 and the second heating furnace 7 respectively reaches thermal shock initial temperature and target temperature
Heat preservation, soaking time is depending on test requirements document；It drives to open using cylinder and seals heat-insulated hatch door 5, while exiting pneumatic pull rod
12, pull rod 12 is shunk to the right, and test specimen follows test specimen frame 11 to fall vertically downwards immediately under the effect of gravity, from the first heating furnace 3
Realize that thermal shock process, final test specimen frame 11 are stuck in the dress of the buffering in second environment module 8 in the middle part for being switched to the second heating furnace 7
It sets in 14.Finally, stop heating, furnace cooling to be heated but takes out test specimen and carries out follow-up Mechanics Performance Testing afterwards.
In addition, as shown in figure 3, the periphery of the present invention is connected with heating system, baric systerm, water-cooling system, monitoring temperature
System and computer turn-key system.Heating system controls the temperature of the first heating furnace 3 and the second heating furnace 7, temperature monitoring system
It is collectively constituted by the W-Re formula thermocouple with ceramic protecting pipe and color comparator pyrometer, temperature uses W-Re formula thermoelectricity less than 1800 DEG C
Even thermometric, temperature use color comparator pyrometer thermometric higher than 1800 DEG C.Water-cooling system connects water cooling unit, and water cooling is carried out to equipment.Gas
Pressure system is used to control the vacuum degree of first environment module 2 and second environment module 8, according to experiment demand respectively to two environment
Module is evacuated or is filled with inert gas, and minimum vacuum degree is up to 10 in environment module-2Pa.Baric systerm is equipped with machinery
Pump and diffusion pump are also equipped with air accumulator for pumping in stove, can be to be filled with the inertia such as nitrogen, argon gas in two environment modules
Gas.
Apparatus of the present invention and test method can realize the warm punching of the efficient lifting/lowering under large span initial temperature and target temperature
Experiment is hit, thermal shock target temperature and initial temperature can be precisely controlled, and variation range amplitude is big：Room temperature is to 3000 DEG C, one
Secondary experiment can complete thermal shock process to identical size or various sizes of batch test specimen in identical thermal shock environments simultaneously, greatly
It is big to improve test efficiency and ensure that the temperature environment of test specimen experience is the same；Thermal environment condition includes inert atmosphere and vacuum
Thus it is narrow to solve small current lifting/lowering warm impact temperature difference region, thermal shock initial temperature and target temperature amplitude of variation for environment
It is narrow and be difficult to accurately control and the problems such as testing efficiency is low, provide test arm for the research and development and application of new type high temperature material
Section.
Claims (4)
1. one kind is for ceramic material lifting/lowering warm impact test apparatus and test method, including two are overlapped from top to bottom
First environment module (2) and second environment module (8), be correspondingly arranged respectively inside two environment modules the first heating furnace (3) and
Second heating furnace (7), the first heating furnace (3) are supported by the first heating furnace base (13), and the second heating furnace (7) is by the second heating furnace
Pedestal (15) supports, it is characterized in that：It is heat-insulated by openable and closable sealing between first environment module (2) and second environment module (8)
Hatch door (5) is isolated.Test specimen frame leading truck (10) is housed, first environment module (2) side is equipped with gas at the top of first environment module (2)
Dynamic pull rod (12), batch test specimen (9) are mounted in test specimen frame (11), and (16) are fixed by the card slot (17) and catch of test specimen frame (11),
Test specimen frame (11) is inserted into test specimen frame leading truck (10), and test specimen frame (11) lower end is contacted with the pneumatic pull rod (12) of stretching, and second
Environment module (8) bottom is equipped with buffer unit (14).
2. it is according to claim 1 a kind of for ceramic material lifting/lowering warm impact test apparatus and test method, it is special
Sign is：It is that cylinder-shaped ceramic base is compound that first heating furnace (3) and the second heating furnace (7), which uses sensing heating, heater,
Material, drum surface wind conductive copper wire.
3. it is according to claim 1 a kind of for ceramic material lifting/lowering warm impact test apparatus and test method, it is special
Sign is：The test specimen frame (11) selects graphite, and is provided with card slot (17) on test specimen frame (11) and is equipped with graphite catch (16).
4. it is according to claim 1 a kind of for ceramic material lifting/lowering warm impact test apparatus and test method, it is special
Sign is：The buffer unit (14) selects carbon felt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810099374.1A CN108398350B (en) | 2018-01-30 | 2018-01-30 | Ceramic material heating/cooling thermal shock test device and test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810099374.1A CN108398350B (en) | 2018-01-30 | 2018-01-30 | Ceramic material heating/cooling thermal shock test device and test method |
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| CN108398350A true CN108398350A (en) | 2018-08-14 |
| CN108398350B CN108398350B (en) | 2020-09-01 |
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| CN201810099374.1A Active CN108398350B (en) | 2018-01-30 | 2018-01-30 | Ceramic material heating/cooling thermal shock test device and test method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111948082A (en) * | 2020-08-19 | 2020-11-17 | 西南交通大学 | Cold and hot impact test device |
| CN112504899A (en) * | 2020-11-18 | 2021-03-16 | 重庆大学 | Thermal shock experimental system |
| CN112665864A (en) * | 2020-11-12 | 2021-04-16 | 南京航空航天大学 | Device and method for simulating random thermal shock load of aircraft engine |
| CN113376048A (en) * | 2020-02-25 | 2021-09-10 | 芯恩（青岛）集成电路有限公司 | Cold and hot impact testing device and testing method |
| CN113624631A (en) * | 2021-07-19 | 2021-11-09 | 江阴硅普搪瓷股份有限公司 | Glass lining layer temperature difference and sudden change resistance test device and test method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113376048A (en) * | 2020-02-25 | 2021-09-10 | 芯恩（青岛）集成电路有限公司 | Cold and hot impact testing device and testing method |
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| CN112665864A (en) * | 2020-11-12 | 2021-04-16 | 南京航空航天大学 | Device and method for simulating random thermal shock load of aircraft engine |
| CN112665864B (en) * | 2020-11-12 | 2022-05-03 | 南京航空航天大学 | Device and method for simulating random thermal shock load of aircraft engine |
| CN112504899A (en) * | 2020-11-18 | 2021-03-16 | 重庆大学 | Thermal shock experimental system |
| CN113624631A (en) * | 2021-07-19 | 2021-11-09 | 江阴硅普搪瓷股份有限公司 | Glass lining layer temperature difference and sudden change resistance test device and test method thereof |
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| Publication number | Publication date |
|---|---|
| CN108398350B (en) | 2020-09-01 |
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