CN107843437A - A kind of electromagnetic heating type cold-hot impact test system and method - Google Patents
A kind of electromagnetic heating type cold-hot impact test system and method Download PDFInfo
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- CN107843437A CN107843437A CN201810008489.5A CN201810008489A CN107843437A CN 107843437 A CN107843437 A CN 107843437A CN 201810008489 A CN201810008489 A CN 201810008489A CN 107843437 A CN107843437 A CN 107843437A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 79
- 238000009863 impact test Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 239000000498 cooling water Substances 0.000 claims abstract description 82
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 238000002474 experimental method Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000010998 test method Methods 0.000 claims abstract description 6
- 235000019628 coolness Nutrition 0.000 claims abstract description 4
- 238000012360 testing method Methods 0.000 claims description 25
- 230000035939 shock Effects 0.000 claims description 10
- 238000005382 thermal cycling Methods 0.000 claims description 8
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 7
- 230000008450 motivation Effects 0.000 claims description 7
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 5
- 229910001060 Gray iron Inorganic materials 0.000 claims description 4
- 230000001351 cycling effect Effects 0.000 claims description 4
- 239000000446 fuel Substances 0.000 abstract description 4
- 239000000295 fuel oil Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000001960 triggered effect Effects 0.000 abstract description 2
- 210000004209 hair Anatomy 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Engines (AREA)
Abstract
The electromagnetic heating type cold-hot impact test system of the present invention, including power supply, electromagnetic heater, engine cool water supply system, monitoring PC and engine to be tested, are characterised by:Engine to be tested remains with engine cylinder-body, engine cylinder cover and cylinder sleeve of engine, the Electromagnetic Heating head heated to it is provided with cylinder sleeve of engine, engine cool water supply system provides cooling water to cooling water channel, and leaving water temperature sensors are provided with engine water outlet.The test method of the present invention, including:A) equipment connects;B) Heating Experiments;C) ceiling temperatures detect;D) coolings experiment;E) lower limit temperatures detect;F) judges cycle-index.The cold-hot impact test system and method for the present invention, cylinder sleeve, cylinder cap heating that conventional fuel oil is triggered are simulated using Electromagnetic Heating, without fuel consumption, effectively reduces experimentation cost, beneficial effect is notable, is suitable for the application of popularization.
Description
Technical field
The present invention relates to a kind of cold-hot impact test system and method, in particular, more particularly to a kind of Electromagnetic Heating
Formula cold-hot impact test system and method.
Background technology
, it is necessary to carry out bench test during engine research, development, to evaluate the properties of researched and developed new work engine,
But existing bench test energy consumption is big, cost is high, for example, during using engine overall test, the fuel cost of 1 hour
About 1500 yuan, it usually needs carry out the bench test of 3000 hours, required expense is 4,500,000 or so, and experimentation cost is high
It is high.Therefore, existing engine rig test is both unfavorable for energy conservation, is also unsuitable for teaching experiment and is used.
In the cold shock testing of engine, mistake that mainly engine evaluated continuously works under the state of colding and heat succeed each other
The anti-cracking ability of Cheng Zhong, its gray iron and cylinder sleeve, without paying close attention to the performance of engine miscellaneous part, if still adopted
The mode tested with existing whole engine fuel, undoubtedly cost is excessively high, is unfavorable for energy conservation and reduces research and development or examination
Test cost.
The content of the invention
A kind of the shortcomings that present invention is in order to overcome above-mentioned technical problem, there is provided electromagnetic heating type cold-hot impact test system
And method.
The electromagnetic heating type cold-hot impact test system of the present invention, including power supply, electromagnetic heater, engine cooling water
Feed system, monitoring PC and engine to be tested, power supply are powered to electromagnetic heater, on electromagnetic heater
The electromagnetic heating controller being controlled to its working condition is provided with, cooling water is provided with engine cool water supply system
Controller;It is characterized in that:Engine to be tested remains with engine cylinder-body, engine cylinder cover and in engine cylinder-body
Cylinder sleeve of engine, be provided with cooling water channel in engine cylinder-body and engine cylinder cover;It is provided with to enter it in cylinder sleeve of engine
The Electromagnetic Heating head of row heating, the coil on Electromagnetic Heating head are connected with the output end of electromagnetic heater;Engine cool
The delivery port of water supply system is connected through water inflow of the engine pipe with the water inlet of cooling water channel, and the delivery port of cooling water channel is through hair
Motivation outlet pipe is connected with the water inlet of engine cool water supply system, and leaving water temperature biography is provided with engine water outlet
Sensor, water temperature sensor are connected with cooling water control device;The monitoring PC and electromagnetic heating controller and cooling water control
Device processed is connected through order wire.
The electromagnetic heating type cold-hot impact test system of the present invention, the power supply of the electromagnetic heater are exchanged using 220V
Civil power.
The electromagnetic heating type cold-hot impact test system of the present invention, the engine cylinder cover is through cylinder bolt and engine cylinder
Body is fixedly connected.
The test method of the electromagnetic heating type cold-hot impact test system of the present invention, it is characterised in that pass through following steps
To realize:
A) equipment is connected, and the engine for remaining with gray iron and cylinder sleeve is placed on testing stand, and in each engine cylinder
Motionless electromagnetic heating head in set;Then by the disengaging for going out water inlet and engine cooling water channel of engine cool water supply system
The mouth of a river, connected respectively through water inflow of the engine pipe with transmitter outlet pipe;Finally, by monitoring PC and electromagnetic heating controller
It is connected with cooling water control device through order wire;B) Heating Experiments, monitoring PC open Electromagnetic Heating through electromagnetic heating controller
Device, cylinder sleeve of engine and engine cylinder cover are heated using Electromagnetic Heating head;While Electromagnetic Heating is opened, monitoring
PC controls engine cool water supply system through cooling water control device, high-temperature cooling water is supplied into cooling water channel, and utilize
Leaving water temperature sensors detect to leaving water temperature in real time;C) ceiling temperatures detect, and are detected when by leaving water temperature sensors
When reaching 105 DEG C ± 2 DEG C of scope to the leaving water temperature of cooling water channel, then stop the heating of electromagnetic heater;Perform step
d);D) coolings experiment, while the heating of electromagnetism feeder apparatus is stopped, engine cool water supply system is controlled to cooling water channel
In be passed through low-temperature cooling water, and leaving water temperature is detected in real time using leaving water temperature sensors;E) lower limit temperatures detect,
When the leaving water temperature that cooling water channel is detected by leaving water temperature sensors reaches 38 DEG C ± 2 DEG C of scope, then equivalent to holding
Go 1 thermal cycling test, perform step f);F) judges cycle-index, judges that currently performed cold cycling number is
No to have reached setting value, if having reached setting value, cold shock testing terminates, next to the cylinder sleeve and cylinder cap of engine
Cold-and-heat resistent shock analysis;If without reach setting value, redirect perform step b), re-start cold cycling examination
Test.
The test method of the electromagnetic heating type cold-hot impact test system of the present invention, the engine cool described in step b)
The temperature for the high-temperature cooling water that water supply system supplies to cold water water channel is more than 40 DEG C and is less than 103 DEG C, in step d), engine
The temperature for the low-temperature cooling water that cooling water supply system supplies to cold water water channel is more than 0 DEG C and is less than 38 DEG C;Cooling water control device
It is controlled by the cooling water temperature, the cooling water flow that are supplied to engine cool water supply system, and Electromagnetic Heating control
Device processed is controlled to the power of Electromagnetic Heating head, makes the time control of 1 thermal cycling test in 6min or so;In step f)
Described cycle-index setting value is 3000 times.
The beneficial effects of the invention are as follows:The cold-hot impact test system of the present invention, by electromagnetic heater, engine cool
Water supply system, monitoring PC and cluster engine with experiment in cylinder sleeve of engine into being provided with to cylinder sleeve and cylinder cap heating
Electromagnetic Heating head, fuel oil is triggered during simulating conventional engine rig test cylinder sleeve, cylinder cap heating, fired without consuming
Oil, heated using electric energy, capacity usage ratio is high, effectively reduces experimentation cost;So that carried out needing for 3000 hours in the past
4,500,000 experiment is spent, only need to spend 300,000(The electricity charge per hour are about 100 yuan), greatly reduce the cold and hot of engine
Impact experiment cost, beneficial effect is notable, is suitable for the application of popularization.
The experimental method of the cold-hot impact test system of the present invention, adds in electromagnetic heater to cylinder sleeve of engine and cylinder cap
In the process of heat, engine cool water supply system is passed through high-temperature cooling water into cooling water channel, when leaving water temperature reaches the upper limit
When, then stop Electromagnetic Heating and be changed to be passed through low-temperature cooling water into cooling water channel, when leaving water temperature reaches the lower limit of setting,
1 time cold shock testing finishes, and and so on, until reaching the cycle-index of setting, realizes and is tried with engine fuel substantially
Equivalent thermal shock simulation during testing.
Brief description of the drawings
Fig. 1 is the schematic diagram of the electromagnetic heating type cold-hot impact test system of the present invention.
In figure:1 power supply, 2 electromagnetic heaters, 3 electromagnetic heating controllers, 4 Electromagnetic Heating heads, 5 engine cylinder-bodies, 6 hairs
Motivation cylinder sleeve, 7 cooling water channels, 8 engine cylinder covers, 9 cylinder bolts, 10 water inflow of the engine pipes, 11 leaving water temperature sensors, 12 hairs
Motivation outlet pipe, 13 engine cool water supply systems, 14 cooling water control devices, 15 monitoring PCs.
Embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, give the present invention electromagnetic heating type cold-hot impact test system schematic diagram, its by power supply 1,
Electromagnetic heater 2, engine cool water supply system 13, monitoring PC 15 and cluster engine to be tested are into power supply 1 is given
Electromagnetic heater 2 is powered, and power supply 1 uses 220V electric mains, and Electromagnetic Heating control is provided with electromagnetic heater 2
Device 3, so that the heating on off operating mode to electromagnetic heater 2 and heating power are controlled.Due to engine in experimentation
Fuel oil service need not be carried out, engine to be tested retains engine cylinder-body 5, cylinder sleeve of engine 6 and engine cylinder cover 8,
Cylinder sleeve of engine 6 is located in engine cylinder-body 5, and engine cylinder cover 8 is fixed on engine cylinder-body 5 through cylinder bolt 9.Each hair
Electromagnetic Heating first 4, output end of the coil through wire Yu electromagnetic heater 2 of Electromagnetic Heating first 4 are provided with motivation cylinder sleeve 6
It is connected, so that electromagnetic heater 2 heats through Electromagnetic Heating first 4 to cylinder sleeve of engine 6 and engine cylinder cover 8, carrys out mould
Send out the heating of cylinder sleeve and cylinder cap during motivation fuel oil service.
Cooling water channel 7 is provided with engine cylinder-body 5 and engine cylinder cover 8, coolant is passed through into cooling water channel 7(It is cold
But water)To realize the cooling to cylinder body and cylinder cap.The delivery port of shown engine cool water supply system 13 is through water inflow of the engine
Pipe 10 communicates with the water inlet of cooling water channel 7, and the delivery port of cooling water channel 7 supplies through engine water outlet 12 and engine cooling water
Water inlet to system 13 communicates, so that the recirculated water that engine cool water supply system 13 exports circulates in cooling water channel 7
Flowing, realizes the cooling to cylinder sleeve of engine and cylinder cap.Cooling water control is provided with shown engine cool water supply system 13
Device 14 processed, cooling water control device 14 can be controlled to the cooling water temperature and flow being passed through in cooling water channel 7.Engine water outlet
Leaving water temperature sensors 11 are provided with pipe 12, the output of water temperature sensor 11 is connected with cooling water control device 14.
Shown monitoring PC 15 is connected through order wire with electromagnetic heating controller 3 and cooling water control device 14, monitors
PC 15 is used to run engine cold shock testing program.PC 15 is monitored by the communication with electromagnetic heating controller 3, can
The on off state and heating power of electromagnetic heater 2 are controlled, monitoring PC 15 by with cooling water control device 14
Communication, can both obtain the leaving water temperature value of cooling water channel 7, the temperature and flow velocity of recirculated cooling water can be controlled again.
The test method of the electromagnetic heating type cold-hot impact test system of the present invention, is realized by following steps:
A) equipment is connected, and the engine for remaining with gray iron and cylinder sleeve is placed on testing stand, and in each engine cylinder
Motionless electromagnetic heating head in set;Then by the disengaging for going out water inlet and engine cooling water channel of engine cool water supply system
The mouth of a river, connected respectively through water inflow of the engine pipe with transmitter outlet pipe;Finally, by monitoring PC and electromagnetic heating controller
It is connected with cooling water control device through order wire;
B) Heating Experiments, monitoring PC opens electromagnetic heater through electromagnetic heating controller, using Electromagnetic Heating head to starting
Machine cylinder sleeve and engine cylinder cover are heated;While Electromagnetic Heating is opened, monitoring PC is controlled through cooling water control device and sent out
Motivation cooling water supply system, high-temperature cooling water is supplied into cooling water channel, and using leaving water temperature sensors in real time to water outlet
Temperature is detected;
In the step, the temperature for the high-temperature cooling water that engine cool water supply system supplies to cold water water channel is small more than 40 DEG C
In 103 DEG C.
C) ceiling temperatures detect, when the leaving water temperature that cooling water channel is detected by leaving water temperature sensors reaches 105 DEG C
During ± 2 DEG C of scope, then stop the heating of electromagnetic heater;Perform step d);
D) coolings experiment, while the heating of electromagnetism feeder apparatus is stopped, engine cool water supply system is controlled to cooling water channel
In be passed through low-temperature cooling water, and leaving water temperature is detected in real time using leaving water temperature sensors;
In the step, the temperature for the low-temperature cooling water that engine cool water supply system supplies to cold water water channel is small more than 0 DEG C
In 38 DEG C.
E) lower limit temperatures detect, when the leaving water temperature that cooling water channel is detected by leaving water temperature sensors reaches 38 DEG C
During ± 2 DEG C of scope, then equivalent to 1 thermal cycling test has been performed, step f) is performed;
F) judges cycle-index, judges whether currently performed cold cycling number has reached setting value, is set if reached
Definite value, then cold shock testing terminate, the next cylinder sleeve to engine and cylinder cap cold-and-heat resistent shock analysis;If no
Reach setting value, then redirect perform step b), re-start thermal cycling test.
Cooling water control device is carried out by cooling water temperature, the cooling water flow supplied to engine cool water supply system
Control, and electromagnetic heating controller are controlled to the power of Electromagnetic Heating head, make the time control of 1 thermal cycling test
In 6min or so;Cycle-index setting value described in the step is 3000 times.
Claims (5)
1. a kind of electromagnetic heating type cold-hot impact test system, including power supply(1), electromagnetic heater(2), engine cooling water
Feed system(13), monitoring PC(15)And engine to be tested, power supply are powered to electromagnetic heater, electromagnetism adds
The electromagnetic heating controller being controlled to its working condition is provided with thermal(3), on engine cool water supply system
It is provided with cooling water control device(14);It is characterized in that:Engine to be tested remains with engine cylinder-body(5), engine cylinder
Lid(8)With the cylinder sleeve of engine in engine cylinder-body(6), cooling water channel is provided with engine cylinder-body and engine cylinder cover
(7);The Electromagnetic Heating head heated to it is provided with cylinder sleeve of engine(4), the coil on Electromagnetic Heating head adds with electromagnetism
The output end of thermal is connected;The delivery port of engine cool water supply system is through water inflow of the engine pipe(10)With cooling water channel
Water inlet be connected, the delivery port of cooling water channel is through engine water outlet(12)With the water inlet of engine cool water supply system
Mouth is connected, engine water outlet(12)On be provided with leaving water temperature sensors(11), water temperature sensor and cooling water control
Device is connected;The monitoring PC(15)With electromagnetic heating controller(3)With cooling water control device(14)It is connected through order wire
Connect.
2. electromagnetic heating type cold-hot impact test system according to claim 1, it is characterised in that:The Electromagnetic Heating dress
Put(2)Power supply(1)Using 220V electric mains.
3. electromagnetic heating type cold-hot impact test system according to claim 1 or 2, it is characterised in that:The engine
Cylinder cap(8)Through cylinder bolt(9)With engine cylinder-body(5)It is fixedly connected.
A kind of 4. test method of the electromagnetic heating type cold-hot impact test system based on described in claim 1, it is characterised in that
Realized by following steps:
A) equipment is connected, and the engine for remaining with gray iron and cylinder sleeve is placed on testing stand, and in each engine cylinder
Motionless electromagnetic heating head in set;Then by the disengaging for going out water inlet and engine cooling water channel of engine cool water supply system
The mouth of a river, connected respectively through water inflow of the engine pipe with transmitter outlet pipe;Finally, by monitoring PC and electromagnetic heating controller
It is connected with cooling water control device through order wire;
B) Heating Experiments, monitoring PC opens electromagnetic heater through electromagnetic heating controller, using Electromagnetic Heating head to starting
Machine cylinder sleeve and engine cylinder cover are heated;While Electromagnetic Heating is opened, monitoring PC is controlled through cooling water control device and sent out
Motivation cooling water supply system, high-temperature cooling water is supplied into cooling water channel, and using leaving water temperature sensors in real time to water outlet
Temperature is detected;
C) ceiling temperatures detect, when the leaving water temperature that cooling water channel is detected by leaving water temperature sensors reaches 105 DEG C ± 2
DEG C scope when, then stop electromagnetic heater heating;Perform step d);
D) coolings experiment, while the heating of electromagnetism feeder apparatus is stopped, engine cool water supply system is controlled to cooling water channel
In be passed through low-temperature cooling water, and leaving water temperature is detected in real time using leaving water temperature sensors;
E) lower limit temperatures detect, when the leaving water temperature that cooling water channel is detected by leaving water temperature sensors reaches 38 DEG C ± 2 DEG C
Scope when, then equivalent to 1 thermal cycling test has been performed, perform step f);
F) judges cycle-index, judges whether currently performed cold cycling number has reached setting value, is set if reached
Definite value, then cold shock testing terminate, the next cylinder sleeve to engine and cylinder cap cold-and-heat resistent shock analysis;If no
Reach setting value, then redirect perform step b), re-start thermal cycling test.
5. the test method of electromagnetic heating type cold-hot impact test system according to claim 4, it is characterised in that:Step
B) temperature for the high-temperature cooling water that the engine cool water supply system described in supplies to cold water water channel is more than 40 DEG C and is less than
103 DEG C, in step d), the temperature of the low-temperature cooling water that engine cool water supply system supplies to cold water water channel be more than 0 DEG C and
Less than 38 DEG C;Cooling water control device is entered by cooling water temperature, the cooling water flow supplied to engine cool water supply system
Row control, and electromagnetic heating controller are controlled to the power of Electromagnetic Heating head, make the time control of 1 thermal cycling test
System is in 6min or so;Cycle-index setting value described in step f) is 3000 times.
Priority Applications (1)
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CN201810008489.5A CN107843437A (en) | 2018-01-04 | 2018-01-04 | A kind of electromagnetic heating type cold-hot impact test system and method |
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CN201810008489.5A CN107843437A (en) | 2018-01-04 | 2018-01-04 | A kind of electromagnetic heating type cold-hot impact test system and method |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108645739A (en) * | 2018-04-18 | 2018-10-12 | 大连理工大学 | A kind of vacuum thermal shock circulation testing machine |
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 |
CN110553944A (en) * | 2019-10-17 | 2019-12-10 | 广西玉柴机器股份有限公司 | impact frequency statistical method and system for cylinder cover cold and hot impact test |
RU195346U1 (en) * | 2019-05-29 | 2020-01-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Башкирский государственный аграрный университет" | Preheater test stand |
CN111737892A (en) * | 2020-05-20 | 2020-10-02 | 南京航空航天大学 | Ice impact engine fan rotor conformance analysis method based on equivalent safety |
CN111829770A (en) * | 2020-08-31 | 2020-10-27 | 安徽江淮汽车集团股份有限公司 | Engine cylinder gasket testing system and method |
CN112112791A (en) * | 2020-08-31 | 2020-12-22 | 格力电器(中山)小家电制造有限公司 | Submersible pump testing device and method |
CN112983670A (en) * | 2021-02-08 | 2021-06-18 | 重庆长安汽车股份有限公司 | Simulation cylinder cover and cylinder hole machining process |
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CN201233315Y (en) * | 2008-07-25 | 2009-05-06 | 中国汽车工程研究院有限公司 | Engine depth cold-hot impact test system |
CN202693437U (en) * | 2012-06-19 | 2013-01-23 | 浙江大学 | Cylinder cover heat shock test bed with pre-tightening force being considered |
CN104280222A (en) * | 2013-07-09 | 2015-01-14 | 上海天纳克排气***有限公司 | Automobile exhaust pipe cold and hot impact testing device |
CN207689135U (en) * | 2018-01-04 | 2018-08-03 | 滨州学院 | A kind of electromagnetic heating type cold-hot impact test system |
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CN201233315Y (en) * | 2008-07-25 | 2009-05-06 | 中国汽车工程研究院有限公司 | Engine depth cold-hot impact test system |
CN202693437U (en) * | 2012-06-19 | 2013-01-23 | 浙江大学 | Cylinder cover heat shock test bed with pre-tightening force being considered |
CN104280222A (en) * | 2013-07-09 | 2015-01-14 | 上海天纳克排气***有限公司 | Automobile exhaust pipe cold and hot impact testing device |
CN207689135U (en) * | 2018-01-04 | 2018-08-03 | 滨州学院 | A kind of electromagnetic heating type cold-hot impact test system |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108645739A (en) * | 2018-04-18 | 2018-10-12 | 大连理工大学 | A kind of vacuum thermal shock circulation testing machine |
RU195346U1 (en) * | 2019-05-29 | 2020-01-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Башкирский государственный аграрный университет" | Preheater test stand |
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 |
CN110553944A (en) * | 2019-10-17 | 2019-12-10 | 广西玉柴机器股份有限公司 | impact frequency statistical method and system for cylinder cover cold and hot impact test |
CN111737892A (en) * | 2020-05-20 | 2020-10-02 | 南京航空航天大学 | Ice impact engine fan rotor conformance analysis method based on equivalent safety |
CN111737892B (en) * | 2020-05-20 | 2024-03-29 | 南京航空航天大学 | Equivalent safety-based ice impact engine fan rotor coincidence analysis method |
CN111829770A (en) * | 2020-08-31 | 2020-10-27 | 安徽江淮汽车集团股份有限公司 | Engine cylinder gasket testing system and method |
CN112112791A (en) * | 2020-08-31 | 2020-12-22 | 格力电器(中山)小家电制造有限公司 | Submersible pump testing device and method |
CN112983670A (en) * | 2021-02-08 | 2021-06-18 | 重庆长安汽车股份有限公司 | Simulation cylinder cover and cylinder hole machining process |
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