CN108645739A - A kind of vacuum thermal shock circulation testing machine - Google Patents
A kind of vacuum thermal shock circulation testing machine Download PDFInfo
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- CN108645739A CN108645739A CN201810375929.0A CN201810375929A CN108645739A CN 108645739 A CN108645739 A CN 108645739A CN 201810375929 A CN201810375929 A CN 201810375929A CN 108645739 A CN108645739 A CN 108645739A
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- vacuum
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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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Abstract
The invention belongs to technical field of test equipment, refer in particular to a kind of vacuum cold-hot impact tester, including holder, controller, induction power supply, temperature measuring equipment, vacuum chamber.Holder is equipped with vacuum chamber frame body, vacuum chamber, heat sink.Have air admission hole and aspirating hole on vacuum chamber frame body, it can be achieved that vacuum environment or protection gas under thermal shock test.Crucible is provided in vacuum chamber, test specimen is put into crucible, and by inductive heating principle heating crucible, the heat preservation of fiber cover plate is placed on crucible.Temperature is measured by temperature measuring equipment, is shown in temperature indicator, and controller can realize that assigned temperature automatically begins to or stops heating and being arranged number of shocks.Compared with prior art, the vacuum shermal shock test chamber can carry out vacuum high-temperature degree thermal shock test, vacuum degree and thermal shock be can control in experiment, temperature heating rate is fast, generally stereochemical structure, more compact, and floor space is small, simple in structure, applied widely.
Description
Technical field
The present invention relates to test mechanical equipment, more particularly to a kind of to be used for test material structure or composite material, in moment
It is lower through lower patient degree of the continuous environment of very high temperature, use and test its caused chemistry that expands with heat and contract with cold in the shortest time
The heat impact tester of variation or physical injury.
Background technology
Cold-hot impact tester is energy-storage type shermal shock test chamber, and main test product is that the test of Current electronic component is used,
Cold-hot impact tester can simulate the instantaneous variation environment between high temperature and low temperature.To judge the reliability and stability of product
Whether the parameters such as energy are qualified；You will be supplied to predict and improve the q＆r foundation of product, for detecting electronics, vapour
The resistivities of the products under cold and hot variation repeatedly such as vehicle, rubber, plastic cement, Space Science and Technology, military products science and technology and high level communication equipment,
Simultaneously by this equipment test, the reliability of product can be improved and carry out the quality control of product, low temperature impact test box is
The test equipment of the fields such as aviation, automobile, household electrical appliances, scientific research indispensability, the productions such as examination and determining electrician, electronics, car electrics, material
Product, parameter and performance after the temperature environment impact variation for carrying out thermocycling, the adaptability used are suitable for school,
Factory, the units such as military project.
Complicated, floor space is larger in existing thermal shock experimental facilities, heating cooling temperature range has
Limitation, the rate of thermal shock is very low, cannot meet present technical need.Therefore, a kind of heating rate is fast, and temperature is high, and
And can be under vacuum conditions the cold-hot impact tester of experiment be necessary to testing of materials.
What Jiang Tulin write《Inductive heating principle and application》It is to utilize electromagnetic induction to propose electromagnetic heating substantially in page 1
The eddy-current heating generated in conductor heats the electrical heating of workpiece to reach, it is by electromagnetic induction by inductor electric energy
The metal heated is passed to, electric energy is changed into thermal energy in metal inside, achievees the purpose that heat metal.Induced potential and fever
Power is related with frequency height and magnetic field power.The electric current flowed through in induction coil is bigger, and the magnetic flux generated is also bigger, because
This, which improves the electric current in induction coil, can be such that the vortex generated in workpiece increases；The same working frequency that improves can also make in workpiece
Induced current increase, to increase heating effect, make workpiece heating faster.In addition, vortex size also with the section of metal
Size, cross sectional shape, conductivity, magnetic permeability and the depth of penetration are related.It can be seen that the heating process of electromagnetic heating is
Electromagnetic induction process and the comprehensive of heat transfer process embody, and electromagnetic induction process has leading role, it influences and in certain journey
Decide heat transfer process on degree.Required thermal energy is that work(is vortexed caused by during electromagnetic induction in heat transfer process
What rate provided.
Electromagnetic heating is chiefly used in smelting metal or surface hardening at present, is heated using electromagnetic heating as thermal shock test
The patent in source has not been reported.
Invention content
With in consideration of it, the present invention provides vacuum thermal shock test chamber in view of the deficiencies of the prior art, with electromagnetic heating
Device is heating source, it can be achieved that the larger temperature difference and vacuum environment simulation material reliability test, using vertical cabinet structure, tightlier
It gathers, floor space smaller is simple in structure, applied widely.
Technical scheme of the present invention：
A kind of vacuum thermal shock circulation testing machine, including sample room 22, control cabinet 18, heating system, temperature measuring equipment and
Vacuum system；In sample room, vacuum chamber holder 1 is equipped with vacuum chamber frame body, vacuum chamber 4 and heat sink 8；Vacuum chamber frame body
It for hollow, is communicated with vacuum chamber 4 by screw shell 3, vacuum chamber frame body is equipped with air admission hole 9 and aspirating hole 25；Vacuum chamber 4
It is connect with vacuum system by aspirating hole 25；It is provided with crucible 7 in vacuum chamber 4, the heat preservation of cover plate 6, test specimen are placed on crucible 7
It is put into crucible 7, passes through electromagnetic heating method heating crucible 7；Heat sink 8 is enclosed in outside vacuum chamber 4；Realize vacuum environment or
Protect thermal shock test under gas.
Vacuum system includes gas pipeline 10, slide valve 11, molecular pump 12, mechanical pump 13, solenoid valve 14,15 and of thermal resistance rule
Ionization gauge 16.
The heating system is intermediate frequency induction heating device, utilizes electromagnetic heating principle.
The heat sink 8 can be air-cooled, water cooling or liquid nitrogen cooling device.
The vacuum chamber 4 is made of heat safe quartz glass.
The temperature measuring equipment is thermocouple 2, and thermocouple 2 contacts in sample and accurately measures sample temperature, in temperature display
It is shown in device 21.
The crucible 7 is ferromagnetism crucible, and cover plate 6 is ceramic fiber sheet.
The control cabinet 18 can realize that specific temperature automatically begins to or stop heating and thermal shock number.
The vacuum shermal shock test chamber of the present invention, can carry out vacuum high-temperature degree thermal shock test, and warming and cooling rate is fast, experiment
In can control caloric impact temperature and number, it can be achieved that 24 hours circulation experiments, generally stereochemical structure, more compact, floor space
It is small, it is simple in structure, it is applied widely.
Description of the drawings
Fig. 1 is structure of the invention figure.
Fig. 2 is front view of the present invention.
Fig. 3 is the sample room of the present invention.
In figure：1 vacuum chamber holder；2 thermocouples；3 screw shells；4 vacuum chambers；5 heating coils；6 cover plates；7 crucibles；8 drops
Warm device；9 air admission holes；10 gas pipelines；11 slide valves；12 molecular pumps；13 mechanical pumps；14 solenoid valves；15 thermal resistances are advised；16 ionization
Rule；17 induction power supply casees；18 control cabinets；19 vacuum degree displays；20 number displays；21 temperature indicators；22 sample rooms；23
Vacuum system room；24 aspirating holes.
Specific implementation mode
Below in conjunction with attached drawing and technical solution, the specific implementation mode that further illustrates the present invention.
A kind of vacuum thermal shock circulation testing machine, including sample room 22, control cabinet 18, heating system, temperature measuring equipment and
Vacuum system；In sample room, vacuum chamber holder 1 is equipped with vacuum chamber frame body, vacuum chamber 4 and heat sink 8；Vacuum chamber frame body
It for hollow, is communicated with vacuum chamber 4 by screw shell 3, vacuum chamber frame body is equipped with air admission hole 9 and aspirating hole 25；Vacuum chamber 4
It is connect with vacuum system by aspirating hole 25；It is provided with crucible 7 in vacuum chamber 4, the heat preservation of cover plate 6, test specimen are placed on crucible 7
It is put into crucible 7, passes through electromagnetic heating method heating crucible 7；Heat sink 8 is enclosed in outside vacuum chamber 4；Realize vacuum environment or
Protect thermal shock test under gas.
Vacuum system includes gas pipeline 10, slide valve 11, molecular pump 12, mechanical pump 13, solenoid valve 14,15 and of thermal resistance rule
Ionization gauge 16.
Preferably, heating system is frequency heating device, utilizes electromagnetic heating principle.That the present apparatus is used is 20kHz
Intermediate frequency electromagnetic heating power supply, homogeneous heating, heating rate reach 50~200 DEG C/s, and maximum temperature can reach 2000 DEG C.
Preferably, the heat sink 8 can be air-cooled, water cooling or liquid nitrogen cooling device.It is arranged not outside vacuum chamber 4
Same heat sink 8 can control heating rate, and rate of temperature fall can be controlled in 30~100 DEG C/s.Low temperature can reach -170 DEG C.
Preferably, vacuum chamber 4 is made of heat safe quartz glass, is connect with vacuum system room 23, and is provided in side
Air admission hole 9 and aspirating hole 24.The limit of vacuum can reach 1 × 10-4Pa, air admission hole 9 can be filled with a variety of different gases, such as nitrogen
Or argon gas, realization work under negative pressure such as 100Pa or positive pressure such as 0.8MPa.
Preferably, temperature measuring equipment is thermocouple 2, and thermocouple 2 contacts in sample and accurately measures sample temperature, in temperature display
It is shown in device 21.To ensure that sample homogeneous heating, control cabinet 18 can accurately control lifting temperature, thermocouple can spot weld crucible
Surface.
Preferably, crucible 7 is ferromagnetism crucible, and cover plate 6 is ceramic fiber sheet.7 selection of crucible is ferromagnetism material, crucible
The middle optional diameter 5mm~50mm of sample.
Preferably, control cabinet 18 can realize that specific temperature automatically begins to or stop heating and thermal shock number.Pass through RS232
Or equilibrium temperature or program-controlled heat treatment process are realized in RS485 communications, PLC connections, are monitored by special-purpose software.Cycle-index is reachable
To 104~106More than secondary.
In order to further illustrate, below by the present invention application method be described as follows：Screw shell 3 and vacuum are backed out first
Sample to be tested is put into the crucible 7 of vacuum chamber 4 by room 4, is covered fiber cover plate 6 and is installed again.Vacuum system passes through aspirating hole 24
Air in vacuum chamber 4 is extracted out, vacuum condition is realized, also can reaction gas be passed through by air admission hole 9.It opens on induction power supply case 17
Power switch is opened control cabinet 18 and is switched, sets test temperature and thermal shock number, start to test.7 temperature of crucible rises rapidly
Heat is sent in sample to be tested by height, logical heat transfer, is reached set temperature until thermocouple 2 measures laboratory sample temperature, is controlled
18 Perceived control of case processed answers power supply box 17 to be stopped, and vacuum chamber 4 cools down rapidly under the effect of heat sink 8, reaches setting most
After low temperature, induction power supply case 17 is reworked, and completes a cycle.Automatic cycle experiment in 24 hours may be implemented in the present invention.
The present invention can carry out vacuum high-temperature degree thermal shock test, and caloric impact temperature, generally three-dimensional knot are can control in experiment
Structure, more compact, floor space is small, simple in structure, applied widely.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, originally not for limitation
Invention, it is noted that for those of ordinary skill in the art, without departing from the concept of the premise of the invention, also
Several modifications and improvements can be made, these are all within the scope of protection of the present invention.
Claims (10)
1. a kind of vacuum thermal shock circulation testing machine, which is characterized in that the vacuum thermal shock circulation testing machine includes
Sample room (22), control cabinet (18), heating system, temperature measuring equipment and vacuum system；In sample room (22), vacuum chamber holder
(1) vacuum chamber frame body, vacuum chamber (4) and heat sink (8) are equipped with；Vacuum chamber frame body is hollow, is passed through screw shell (3)
It is communicated with vacuum chamber (4), vacuum chamber frame body is equipped with air admission hole (9) and aspirating hole (25)；Vacuum chamber (4) passes through aspirating hole (25)
It is connect with vacuum system；It is provided with crucible (7) in vacuum chamber (4), cover plate (6) heat preservation is placed on crucible (7), test specimen is put into
In crucible (7), pass through heating system heats crucible (7)；The heating system is intermediate frequency induction heating device, using electromagnetism plus
Pyrogen is managed；
Heat sink (8) is enclosed in vacuum chamber (4) outside；
Realize thermal shock test under vacuum environment or protection gas；
Control cabinet (18) realizes that required temperature automatically begins to or stop heating and thermal shock number.
2. vacuum thermal shock circulation testing machine according to claim 1, which is characterized in that the vacuum chamber (4) by
Heat safe quartz glass is made.
3. vacuum thermal shock circulation testing machine according to claim 1 or 2, which is characterized in that the temperature measuring equipment
For thermocouple (2), sample temperature is accurately measured in thermocouple (2) contact test sample, the display in temperature indicator (21).
4. vacuum thermal shock circulation testing machine according to claim 1 or 2, which is characterized in that the vacuum system
Including gas pipeline (10), slide valve (11), molecular pump (12), mechanical pump (13), solenoid valve (14), thermal resistance rule (15) and ionize
It advises (16).
5. vacuum thermal shock circulation testing machine according to claim 3, which is characterized in that the vacuum system includes
Gas pipeline (10), slide valve (11), molecular pump (12), mechanical pump (13), solenoid valve (14), thermal resistance rule (15) and ionization gauge
(16)。
6. the vacuum thermal shock circulation testing machine according to claim 1,2 or 5, which is characterized in that the cooling dress
It is air-cooled, water cooling or liquid nitrogen cooling device to set (8).
7. vacuum thermal shock circulation testing machine according to claim 3, which is characterized in that the heat sink (8)
For air-cooled, water cooling or liquid nitrogen cooling device.
8. vacuum thermal shock circulation testing machine according to claim 4, which is characterized in that the heat sink (8)
For air-cooled, water cooling or liquid nitrogen cooling device.
9. the vacuum thermal shock circulation testing machine according to claim 1,2,5,7 or 8, which is characterized in that the earthenware
Crucible (7) is ferromagnetism crucible, and cover plate (6) is ceramic fiber sheet.
10. vacuum thermal shock circulation testing machine according to claim 6, which is characterized in that the crucible (7) is iron
Magnetic crucible, cover plate (6) are ceramic fiber sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810375929.0A CN108645739A (en) | 2018-04-18 | 2018-04-18 | A kind of vacuum thermal shock circulation testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810375929.0A CN108645739A (en) | 2018-04-18 | 2018-04-18 | A kind of vacuum thermal shock circulation testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108645739A true CN108645739A (en) | 2018-10-12 |
Family
ID=63747278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810375929.0A Pending CN108645739A (en) | 2018-04-18 | 2018-04-18 | A kind of vacuum thermal shock circulation testing machine |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211708A (en) * | 2018-10-30 | 2019-01-15 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of low temperature impact test device and its test method |
| CN110243713A (en) * | 2019-06-26 | 2019-09-17 | 重庆理工大学 | A kind of quick-cooling, heating impact experiment apparatus and method for electronic component |
| CN111024746A (en) * | 2019-11-27 | 2020-04-17 | 中山市海明润超硬材料有限公司 | Method and device for testing heat resistance of diamond compact |
| CN112449453A (en) * | 2020-12-08 | 2021-03-05 | 莱芜钢铁集团淄博锚链有限公司 | Intermediate frequency heating temperature closed-loop control system for bar stock |
| CN112557233A (en) * | 2020-12-09 | 2021-03-26 | 中建材蚌埠玻璃工业设计研究院有限公司 | Testing device and testing method for thermal shock resistance test of glass product |
| CN113203913A (en) * | 2021-07-06 | 2021-08-03 | 海拓仪器(江苏)有限公司 | Small-sized quick cold-hot impact testing device |
| 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 |
| CN113567271A (en) * | 2021-07-22 | 2021-10-29 | 安徽凤阳淮河玻璃有限公司 | Glass cup impact testing device and testing method thereof |
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| CN104483224A (en) * | 2015-01-14 | 2015-04-01 | 重庆大学 | Test box for temperature rise thermal shock of ceramic materials |
| CN205550301U (en) * | 2016-02-02 | 2016-09-07 | 江苏拓米洛环境试验设备有限公司 | Many function synthesis environmental test control box |
| CN206627393U (en) * | 2017-04-14 | 2017-11-10 | 上海理工大学 | Electromagnetic induction thermal fatigue tester |
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Patent Citations (4)
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| CN104483224A (en) * | 2015-01-14 | 2015-04-01 | 重庆大学 | Test box for temperature rise thermal shock of ceramic materials |
| CN205550301U (en) * | 2016-02-02 | 2016-09-07 | 江苏拓米洛环境试验设备有限公司 | Many function synthesis environmental test control box |
| CN206627393U (en) * | 2017-04-14 | 2017-11-10 | 上海理工大学 | Electromagnetic induction thermal fatigue tester |
| CN107843437A (en) * | 2018-01-04 | 2018-03-27 | 滨州学院 | A kind of electromagnetic heating type cold-hot impact test system and method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211708A (en) * | 2018-10-30 | 2019-01-15 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of low temperature impact test device and its test method |
| CN110243713A (en) * | 2019-06-26 | 2019-09-17 | 重庆理工大学 | A kind of quick-cooling, heating impact experiment apparatus and method for electronic component |
| CN111024746A (en) * | 2019-11-27 | 2020-04-17 | 中山市海明润超硬材料有限公司 | Method and device for testing heat resistance of diamond compact |
| 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 |
| CN112449453A (en) * | 2020-12-08 | 2021-03-05 | 莱芜钢铁集团淄博锚链有限公司 | Intermediate frequency heating temperature closed-loop control system for bar stock |
| CN112557233A (en) * | 2020-12-09 | 2021-03-26 | 中建材蚌埠玻璃工业设计研究院有限公司 | Testing device and testing method for thermal shock resistance test of glass product |
| CN113203913A (en) * | 2021-07-06 | 2021-08-03 | 海拓仪器(江苏)有限公司 | Small-sized quick cold-hot impact testing device |
| WO2023279622A1 (en) * | 2021-07-06 | 2023-01-12 | 海拓仪器(江苏)有限公司 | Small rapid cold and hot impact testing device |
| US12061225B2 (en) | 2021-07-06 | 2024-08-13 | Hitop Instrument (Jiangsu) Co., Ltd. | Small-sized fast cold and hot shock test devices |
| CN113567271A (en) * | 2021-07-22 | 2021-10-29 | 安徽凤阳淮河玻璃有限公司 | Glass cup impact testing device and testing method thereof |
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