CN110346400A - A kind of experimental rig and method for simulating Cannon burning - Google Patents
A kind of experimental rig and method for simulating Cannon burning Download PDFInfo
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- CN110346400A CN110346400A CN201910525795.0A CN201910525795A CN110346400A CN 110346400 A CN110346400 A CN 110346400A CN 201910525795 A CN201910525795 A CN 201910525795A CN 110346400 A CN110346400 A CN 110346400A
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- G—PHYSICS
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- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The present invention provides a kind of experimental rig and method for simulating Cannon burning, belongs to material testing apparatus technical field.Case, laser, kinematic system and infrared radiation thermometer occur for the device gas mixing box, gas humidity.Gas enters gas mixing box by air inlet, enters gas humidity through gas outlet after mixing and case occurs, the water content in the air stone regulating gas in case occurs by gas humidity, form powder gas simulated atmosphere.Then gas is controlled by gas flow adjuster reaches inflatable mouth, and inflatable mouth is tested by sample and infrared radiation thermometer is arranged towards tested sample.The power of laser and the parameter of kinematic system are controlled, making laser beam and powder gas simulated atmosphere, quickly the surface topography and mass change of sample are analyzed repeatedly after circulation in the surface of scanning sample simultaneously.The rapid evaluation to the anti-ablation ability of material or coating is realized in chemistry-thermal coupling corrosion function when the present invention can simulate Canon launching.
Description
Technical field
The present invention relates to material testing apparatus technical field, a kind of experimental rig for simulating Cannon burning and side are particularly related to
Method.
Background technique
In cannon military service situation, ablation is always an important factor for influencing barrel life, especially in high-energy propellant
When, ablation is more significant to the corrosion function of gun barrel.In shooting course, thorax bears gunpowder combustion in a short time in barrel
The high temperature of gas, is washed away and is corroded with chemical attack at high pressure, while also by the extruding of bearing band and abrasion, operating condition is very severe.It is passing through
After crossing a certain number of shootings, high temperature powder gases generate ablation damage to thorax in barrel, with the exacerbation of interior thorax degree of injury,
Directly affect the war skill index such as fire accuracy, initial velocity.
In Canon launching, the instantaneous temperature of gunpowder detonation is up to 2500~3500K, barrel inner wall temperature can 5~
Reach 1270K in 50ms, the powder gas under high temperature has extremely strong chemical erosion to barrel.Gun propellant, typically by
C, H, O, N are formed, and the powder gases of generation are generally also mainly by CO, CO2、H2、H2O and N2Composition, may be there are also a small amount of NH3With
CH4And micro COS, KOH, HCN etc..It is generally believed that the erosion of propelling gas mainly includes carburizing, oxidation, hydrogen embrittlement.It is main
There are CO, CO under high temperature2Carbon atom is provided for bore interface, C atom is diffused into gun tube basis material, reduces gun tube material
Liquid-solid phase line, promotes the O in gas that can also diffuse to interior thorax and aoxidizes, form the brittle layers such as FeO, furthermore promotes the H in gas2O
And H2Also hydrogen corrosion can be generated with bore interfacial reaction.It is rotten that chemical ablation under high temperature causes internal gun barrel material to occur,
Finally by under the extrusion abrasion effect of bearing band, thorax internal ballistics attributes change in barrel, eventually lead to the failure of gun tube.
It now has a try and tests to carry out the life appraisal of cannon mainly by target in engineering, at high cost, the period is long.Laboratory also has
Closed (patent [201810041394.3], patent [201811524226.6]), semi-hermetic explosion test device, simulation gunpowder are high
Warm high pressure and the operating condition washed away can tentatively reach the evaluation of ablative to material fire-resistance medicine or special gunpowder ablation property.
But closed or half close guarantor's explosion test requires to be ignited by gunpowder, has certain risk, and test sample needs
It is processed into ring specimen, for some materials, process is more difficult.And the experiment side of other common ablation simulations
Method all mainly examines or check the ablation effect of heat including oxy-acetylene flame method, laser stationary point method, arc erosion method, it is difficult to simulate
The chemical erosion of artillery lumen acts on.Therefore, it invents the more rapidly and efficiently safer method of one kind and carrys out simulation material fire-resistance
The behavior of medicine ablation is very important.
Summary of the invention
The present invention is directed to the chemical thermal etching behavior of propelling gas under the quick cycle high temperature of cannon, provides a kind of simulation fire
The experimental rig and method of big gun ablation simulate the ablation of cannon, reach quick from the angle of heat-chemistry coupling ablation
The purpose of the behavior of contrast material or the resistance to gunpowder ablation of coating.
The device includes powder gas simulated atmosphere preparation facilities and scan round device；Wherein, powder gas simulates gas
Atmosphere preparation facilities includes gas mixing box, fan, check (non-return) valve, gas humidity generation case, microporous bubble stone, humidity sensor, gas
Body flow regulator, scan round device include kinematic system, laser and infrared radiation thermometer, and gas mixing box connects air inlet
And gas outlet, gas mixing box is interior to be arranged fan, and gas outlet connects gas humidity by pipeline and case occurs, what gas outlet was connected
Check (non-return) valve is set on pipeline, and gas humidity occurs that microporous bubble stone is arranged in case, and gas humidity occurs to set on the pipeline that case exports
Humidity sensor and gas flow adjuster are set, gas humidity occurs case to export connected pipe end to be inflatable mouth, blow
Tested sample, kinematic system connecting laser are placed below mouthful, laser face is tested sample, is tested by sample and is arranged
Infrared radiation thermometer.
Wherein:
The air inlet is passed through CO, the CO of 10-15% of the mixed gas comprising 40-50% of gas mixing box2, 10-
20% N2, the H of 5-20%2And the O of 20-30%2。
The mixed atmosphere humidity of sample surfaces is blown in 30-70%RH.
Quickly scanning realizes that the temperature of sample surfaces instantaneous high-temperature is not less than 600 DEG C to laser circulation.
The test method of quasi- Cannon burning according to claim, it is characterised in that comprise the steps of:
S1: checking equipment state, and the parameter of kinematic system and laser is arranged, weighs the initial weight of test sample；
S2: being put into test zone for test sample, and mixed gas is passed through gas mixing box according to a certain percentage；
S3: microporous bubble stone is adjusted to adjust the relative humidity of output gas, output gas is tested by moisture monotor
Humidity, adjusting gas flow adjuster control output gas flow of gas；
S4: opening laser, starts kinematic system, realizes that laser beam is scanned in the Rapid Circulation of test sample surface, and
The temperature change of sample surfaces is recorded by infrared radiation thermometer；
S5: after number needed for scan round, closing movement system and laser close the intake valve of mixed gas, weigh
Example weight；
S6: repeating step S1 to S5, the weight gain curve until meeting test requirements document, during record test sample test.
The advantageous effects of the above technical solutions of the present invention are as follows:
In above scheme, can the failure behaviour of Fast simulation material or coating under high temeperature chemistry gas pickling, can
Instantaneous high-temperature-chemical Coupling corrosion function of the circulation in cannon is simulated, sample preparation is simple, and test is fast and effective.
Detailed description of the invention
Fig. 1 is the experimental rig structural schematic diagram of simulation Cannon burning of the invention；
Fig. 2 is the simulated experiment effect picture of the embodiment of the present invention.
Wherein: 1- air inlet；2- gas mixing box；3- fan；The gas outlet 4-；5- check (non-return) valve；Case occurs for 6- gas humidity；
7- microporous bubble stone；8- humidity sensor；9- gas flow adjuster；10- laser；11- inflatable mouth；12- infrared radiation thermometer；
13- is tested sample；14- laser beam；15- kinematic system.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of experimental rig and method for simulating Cannon burning.
As shown in Figure 1, the device includes powder gas simulated atmosphere preparation facilities and scan round device；Wherein, gunpowder
Combustion gas simulated atmosphere preparation facilities includes gas mixing box 2, fan 3, check (non-return) valve 5, gas humidity generation case 6, microporous bubble stone
7, humidity sensor 8, gas flow adjuster 9, scan round device include kinematic system 15, laser 10 and infrared radiation thermometer
12, gas mixing box 2 connects air inlet 1 and gas outlet 4, and fan 3 is arranged in gas mixing box 2, and gas outlet 4 is connected by pipeline
Case 6 occurs for gas humidity, and check (non-return) valve 5 is arranged on the pipeline that gas outlet 4 is connected, and gas humidity occurs that micropore gas is arranged in case 6
Afrodite 7, gas humidity occur that humidity sensor 8 and gas flow adjuster 9 are arranged on the pipeline that case 6 exports, gas humidity hair
It is inflatable mouth 11 that raw case 6, which exports connected pipe end, and tested sample 13 is placed below inflatable mouth 11, and kinematic system 15 connects
Laser 10 is connect, 10 face of laser is tested sample 13, is tested by sample 13 and infrared radiation thermometer 12 is arranged.
Using the method for the experimental rig comprising the steps of:
S1: checking equipment state, and the parameter of kinematic system 15 and laser 10 is arranged, and weighs the first starting weight of test sample 13
Amount；
S2: being put into test zone for test sample 13, and mixed gas is passed through gas mixing box 2；
S3: microporous bubble stone 7 is adjusted to adjust the relative humidity of output gas, output gas is tested by moisture monotor 8
Body humidity, adjusting gas flow adjuster 9 control output gas flow of gas；
S4: opening laser 10, starts kinematic system 15, realizes laser beam 14 in the Rapid Circulation on 13 surface of test sample
Scanning, and pass through the temperature change of the record sample surfaces of infrared radiation thermometer 12；
S5: after number needed for scan round, closing movement system 15 and laser 10 close the intake valve of mixed gas,
Weigh example weight；
S6: repeating step S1 to S5, the weight gain curve until meeting test requirements document, during record test sample test.
It is explained combined with specific embodiments below.
Simulation Cannon burning experiment is carried out according to the experimental provision, experimentation is as follows:
The sample of gun-steel sample and gun-steel electrodeposited chromium is cut into the plate of 6 × 20 × 5mm, is put into area to be measured.By laser
Be set as be adjusted to 200W, spot size 2mm, scanning speed 20mm/s, every 2 seconds run-downs, scan round 10
It is secondary.
By gas CO, CO2、N2、H2、O2Gas mixing box 2 is each led into, is by physical strength flowmeter regulating gas content
50% CO, 15% CO2, 15% N2With 5% H2And 15% O2.Mixed gas is passed through into multihole bubble stone
It is passed through in deionized water, after regulating gas relative humidity is 40%RH, sample surfaces is blown to by atmosphere inflatable mouth, flow is
8L/min。
Start laser and manipulator, sample surface temperature is monitored by infrared measurement of temperature instrument, sample starts instantaneous temperature
Up to 900K, the at any time increase of cycle-index, sample surfaces highest instantaneous temperature can reach 1200K.
It repeats above-mentioned experimental procedure 2 times, it is existing that apparent ablation has occurred in gun steel surface after simulation Cannon burning experiment
As hard-chrome surfaces are electroplated without obvious ablation phenomen, as shown in Figure 2.
In conclusion can be very good comparison different materials using cannon simulation ablation experiments of the invention, coating is following
Ablation behavior under ring high temperature and chemical erosion gas, has the characteristics that rapidly and efficiently.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of experimental rig for simulating Cannon burning, it is characterised in that: including powder gas simulated atmosphere preparation facilities and follow
Ring scanning means；Wherein, powder gas simulated atmosphere preparation facilities include gas mixing box (2), fan (3), check (non-return) valve (5),
Case (6), microporous bubble stone (7), humidity sensor (8), gas flow adjuster (9), scan round device occur for gas humidity
Including kinematic system (15), laser (10) and infrared radiation thermometer (12), gas mixing box (2) connects air inlet (1) and outlet
Mouth (4), gas mixing box (2) is interior to be arranged fan (3), and gas outlet (4) pass through pipeline and connect gas humidity generation case (6), outlet
Check (non-return) valve (5) are set on the pipeline that mouth (4) is connected, gas humidity occurs that microporous bubble stone (7) are arranged in case (6), and gas is wet
Degree occurs that humidity sensor (8) and gas flow adjuster (9) are arranged on the pipeline of case (6) outlet, and case (6) occur for gas humidity
Exporting connected pipe end is inflatable mouth (11), places tested sample (13), kinematic system below inflatable mouth (11)
(15) connecting laser (10), laser (10) face are tested sample (13), are tested by sample (13) and infrared measurement of temperature is arranged
Instrument (12).
2. the experimental rig of simulation Cannon burning according to claim 1, it is characterised in that: the microporous bubble stone (7)
It is connected to the end of gas outlet (4) institute connecting pipe.
3. the experimental rig of simulation Cannon burning according to claim 1, it is characterised in that: the air inlet (1) is passed through
The mixed gas of gas mixing box (2) includes the CO, the CO of 10-15% of 40-50%2, the N of 10-20%2, the H of 5-20%2And
The O of 20-30%2。
4. the experimental rig of simulation Cannon burning according to claim 1, it is characterised in that: gas outlet (11) blowout
Mixed atmosphere humidity in 30-70%RH.
5. the experimental rig of simulation Cannon burning according to claim 1, it is characterised in that: laser (10) circulation
Quickly scanning realizes that the temperature of sample surfaces instantaneous high-temperature is not less than 600 DEG C.
6. the method for the experimental rig of application simulation Cannon burning described in claim 1, it is characterised in that: include following step
It is rapid:
S1: checking equipment state, and the parameter of kinematic system (15) and laser (10) is arranged, and weighs the initial of test sample (13)
Weight；
S2: being put into test zone for test sample (13), and mixed gas is passed through gas mixing box (2)；
S3: microporous bubble stone (7) are adjusted to adjust the relative humidity of output gas, test output gas by moisture monotor (8)
Body humidity, adjusting gas flow adjuster (9) control output gas flow of gas；
S4: opening laser (10), starts kinematic system (15), realizes laser beam (14) in the quick of test sample (13) surface
Scan round, and pass through the temperature change of infrared radiation thermometer (12) record sample surfaces；
S5: after number needed for scan round, closing movement system (15) and laser (10) close the intake valve of mixed gas,
Weigh example weight；
S6: repeating step S1 to S5, the weight gain curve until meeting test requirements document, during record test sample test.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024750A (en) * | 2019-12-04 | 2020-04-17 | 南京航空航天大学 | Device and method for testing ablation of ceramic matrix composite material with controllable gas atmosphere |
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Cited By (1)
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|---|---|---|---|---|
| CN111024750A (en) * | 2019-12-04 | 2020-04-17 | 南京航空航天大学 | Device and method for testing ablation of ceramic matrix composite material with controllable gas atmosphere |
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