CN110426291A - Assess the system and method that non-oxidic material complex stress acts on lower reflex action - Google Patents
Assess the system and method that non-oxidic material complex stress acts on lower reflex action Download PDFInfo
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- CN110426291A CN110426291A CN201910530971.XA CN201910530971A CN110426291A CN 110426291 A CN110426291 A CN 110426291A CN 201910530971 A CN201910530971 A CN 201910530971A CN 110426291 A CN110426291 A CN 110426291A
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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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
- G01N2203/0202—Control of the test
Abstract
The present invention provides the systems that a kind of assessment non-oxidic material complex stress acts on lower reflex action, including being arranged on the non-oxidic material sample, for providing the Stress Control device of stress field to sample when assessing the reflex action of the sample, for providing the temperature control equipment in temperature field to sample when assessing the reflex action of the sample, for providing the atmosphere control device of air-flowing environment to sample when assessing the reflex action of the sample.The present invention also provides a kind of methods that assessment non-oxidic material complex stress acts on lower reflex action.Assessment non-oxidic material complex stress provided by the invention acts on the system and method for lower reflex action, the coordinated regulation to specimen reaction process temperature field, air-flowing environment and stress field may be implemented, and then the high-temperature interface reflex action of non-oxidic material is assessed under conditions of more closing to reality Service Environment.
Description
Technical field
The present invention relates to inorganic non-metallic material performance study technical field, in particular to a kind of assessment non-oxidic material
Complex stress acts on the system and method for lower reflex action.
Background technique
The hot industries such as Ferrous Metallurgy are the important foundation industry of national economy, the long-acting stable operation of extreme environment
It is unable to do without the powerful guarantee of the high-temperature structural material (i.e. refractory material) as liner.Compared to oxide material, non-oxidized substance
(carbide, nitride, boride etc.) and its composite material have superior thermal shock resistance and anti-scour property.And with
Traditional carbon composite is compared, and not only intensity is high, antioxygenic property is excellent for this kind of material, and does not pollute molten steel substantially.Therefore,
They are the ideal selections of clean steel novel refractory.However, non-oxidized substance and its composite material during practical military service
As the inner lining material of elevated temperature vessel, frequent thermal shocking is often born, molten iron/molten steel washes away extruding with material, because
And the effect of inevitable thermally stressed, compression and hot-pressed coupling complex stress.The effect of complex stress is often drawn
The variation of material microstructure is played, micro-crack and hole, or even cracking, peeling are generated.These structure changes can accelerate material and anti-
The interfacial reaction rate between medium (oxygen, water vapour and vapour of an alkali metal etc.) is answered so that material property failure, causes it
Performance is affected, and is likely to become one of the main source of large scale nonmetal inclusion in steel, finally causes to the quality of steel
Adverse effect.Therefore, the high-temperature interface reflex action and mechanism under the conditions of non-oxidized substance and its composite material stress load are studied
It is the important foundation that such material is widely applied and high-quality steel produces.
In order to accurately obtain high-temperature interface reflex action of the non-oxidic material under stress, generally require in sample
Coordinated regulation is carried out to temperature field, air-flowing environment and stress field in reaction process, makes material military service environment and reality more to reach
Close to and more can reflect the purpose of material failure essence.And existing apparatus is difficult to non-oxidic material in Service Environment
Stress, temperature and atmosphere carry out accuracy controlling simultaneously, can not effectively simulation material couple under environment in stress-temperature-atmosphere
High-temperature interface behavior is unfavorable for the prediction of the cognition of material Wear cause and service life under actual condition.
Summary of the invention
The object of the present invention is to provide a kind of assessment non-oxidic material complex stress act on lower reflex action system and
Its method, to realize the coordinated regulation to specimen reaction process temperature field, air-flowing environment and stress field, and then in more closing to reality
The high-temperature interface reflex action of non-oxidic material is assessed under conditions of Service Environment.
In order to solve the above technical problems, the present invention provides a kind of assessment non-oxidic material complex stresses to act on lower reaction
The system of behavior, including
Stress Control device: being arranged on the non-oxidic material sample, in the reaction row for assessing the sample
For when provide stress field to sample；
Temperature control equipment: being arranged on the non-oxidic material sample, in the reaction row for assessing the sample
For when provide temperature field to sample；
Atmosphere control device: being arranged on the non-oxidic material sample, in the reaction row for assessing the sample
For when provide air-flowing environment to sample.
Further, the Stress Control device includes the upper pressure bar and lower pressure bar that the sample upper and lower ends are arranged in,
It connect the stress loading device for pressing by upper pressure bar to the sample with the upper pressure bar, and connect use with the lower pressure bar
In the pedestal for supporting lower pressure bar, strain gauge is set between the stress loading device and upper pressure bar.
Further, the temperature control equipment includes the Si-Mo rod heating furnace for accommodating the sample and heating to sample, position
Thermocouple in the Si-Mo rod heating furnace, and the temperature control being electrically connected respectively with the Si-Mo rod heating furnace and thermocouple
The upper end of cabinet, the lower end of the upper pressure bar and lower pressure bar is arranged in the Si-Mo rod heating furnace.
Further, the atmosphere control device includes: oxygen cylinder, argon bottle, for extracting the peristaltic pump of deionized water,
To the oxygen, argon gas and deionized water preheating heating tank, the air inlet pipe on Si-Mo rod heating furnace top is set, and
The escape pipe of Si-Mo rod heating furnace lower part is set, the oxygen cylinder, argon bottle and peristaltic pump respectively with the heating tank
Pipeline connection, the heating tank are connected to the air inlet pipeline.
Further, the oxygen cylinder and argon bottle are connected to by threeway with the heating tank pipeline, the oxygen cylinder and
Oxygen flow meter and the first valve, the pipe that the argon bottle is connected to the threeway are set gradually on the pipeline of the threeway connection
Road sets gradually nitrogen stream meter and the second valve, and third valve is arranged on the pipeline that the threeway is connected to the heating tank
Door.
Further, the heating tank is connected to the air inlet pipe by air induction hose, and setting adds on the air induction hose
Hot line.
Further, the air inlet pipe and an air outlet pipe is alundum tube.
The present invention also provides a kind of methods that assessment non-oxidic material complex stress acts on lower reflex action, including such as
Lower step:
Non-oxidic material sample is fixed between upper pressure bar and lower pressure bar, heating journey is set by temperature control cabinet
Sequence, and by the temperature of thermocouple real-time measurement sample flat-temperature zone in Si-Mo rod heating furnace；
Argon gas is passed through into Si-Mo rod heating furnace by air inlet pipe in temperature-rise period, argon atmosphere protection is carried out to sample；
After being warming up to preset temperature in Si-Mo rod heating furnace, default stress is applied to sample by stress loading device, simultaneously
Oxygen atmosphere, water vapour atmosphere or oxygen and water vapour are passed through into Si-Mo rod heating furnace from air inlet pipe and couples atmosphere to default
Atmosphere partial pressure；
In-furnace temperature, stress loading device application stress are heated by control Si-Mo rod, and to water vapour or/and oxygen partial pressure
Control, can temperature field, air-flowing environment and stress field coordinated regulation to specimen reaction process, thus to non-oxidic material high temperature
The reflex action at interface is assessed.
Further, the preset temperature in the Si-Mo rod heating furnace is 200-1600 DEG C, and the default stress is 0-
1Mpa。
Further, oxygen atmosphere partial pressure is 0.2-0.8atm in the default atmosphere partial pressure, the water vapour atmosphere
Partial pressure is 0.3-0.9atm, and steam partial pressure is 0.3-0.9atm in the oxygen and water vapour coupling atmosphere, oxygen partial pressure is
0.1-0.7atm。
A kind of assessment non-oxidic material complex stress provided by the invention acts on the system and method for lower reflex action,
By setting Stress Control device, atmosphere control device and temperature control equipment, it can be achieved that non-oxidic material specimen reaction
Temperature field, air-flowing environment and stress field in the process carries out coordinated regulation, and then under conditions of more closing to reality Service Environment
The high-temperature interface reflex action of non-oxidic material is assessed.
Detailed description of the invention
Fig. 1 is the system that assessment non-oxidic material complex stress provided in an embodiment of the present invention acts on lower reflex action
Structural schematic diagram.
Description of symbols:
A- sample；1- stress loading device；2- strain gauge；The upper pressure bar of 3-；Pressure bar under 4-；5- pedestal；6- Si-Mo rod adds
Hot stove；7- thermocouple；8- temperature control cabinet；9a- oxygen cylinder；9b- argon bottle；10a- oxygen flow meter；10b- argon flow meter；
11- peristaltic pump；12- heating tank；The first valve of 13a-；The second valve of 13b-；13c- third valve；14- heater wire；15- air inlet
Pipe；16- escape pipe.
Specific embodiment
Referring to Fig. 1, a kind of lower reflex action of assessment non-oxidic material complex stress effect provided in an embodiment of the present invention
System, including
Stress Control device: being arranged in the non-oxidic material Sample A, in the reaction for assessing the Sample A
Stress field is provided to Sample A when behavior；
Temperature control equipment: being arranged in the non-oxidic material Sample A, in the reaction for assessing the Sample A
Temperature field is provided to Sample A when behavior；
Atmosphere control device: being arranged in the non-oxidic material Sample A, in the reaction for assessing the Sample A
Air-flowing environment is provided to Sample A when behavior.
Wherein, Stress Control device includes the upper pressure bar 3 and lower pressure bar 4 that Sample A upper and lower ends are arranged in, with upper pressure bar 3
The stress loading device 1 for pressing by upper pressure bar 3 to Sample A is connected, and is connect with lower pressure bar 4 and is used to support lower pressure bar 4
Pedestal 5, in order to which real-time display stress loading device 1 is applied to the stress intensity in Sample A by upper pressure bar 3, under stress loading device 1
Strain gauge 2 is connected between end and 3 upper end of upper pressure bar.Also, for the ease of stress loading device 1 by upper pressure bar 3 to examination
Sample A applies pressure, and holding chamber compatible with Sample A is cooperatively formed between upper pressure bar 3 and lower pressure bar 4.
Temperature control equipment includes the Si-Mo rod heating furnace 6 for accommodating Sample A and heating to Sample A, is located at Si-Mo rod heating furnace 6
Interior thermocouple 7, and the temperature control cabinet 8 being electrically connected respectively with Si-Mo rod heating furnace 6 and thermocouple 7, the lower end of upper pressure bar 3 with
The upper end of lower pressure bar 4 is separately positioned on 6 inside upper and lower ends of Si-Mo rod heating furnace.
Atmosphere control device includes: oxygen cylinder 9a, argon bottle 9b, for extracting the peristaltic pump 11 of deionized water, to described
The air inlet pipe 15 on 6 top of Si-Mo rod heating furnace, and setting is arranged in oxygen, argon gas and deionized water preheating heating tank 12
Escape pipe 16 in 6 lower part of Si-Mo rod heating furnace, the oxygen cylinder 9a, argon bottle 9b and peristaltic pump 11 respectively with the heating tank
12 are connected to by pipeline, and the gas outlet of heating tank 12 is connected to air inlet pipe 15 by air induction hose.In order to prevent from heating tank 12
It is discharged to high-temperature gas temperature reduction in air induction hose flow process of air inlet pipe 15, is connected in heating tank 12 with air inlet pipe 15
Heater wire 14 is set on air induction hose.Since most tank bodies of air inlet pipe 15 and escape pipe 16 all protrude into Si-Mo rod heating furnace
Inside 6, in order to adapt to the high temperature and high pressure environment inside Si-Mo rod heating furnace 6, what air inlet pipe 15 and escape pipe 16 were all made of is rigid
Yu Guan.
Wherein, oxygen cylinder 9a and argon bottle 9b is connected to by threeway by pipeline with heating tank 12, the oxygen cylinder 9a and
Oxygen flow meter 10a and the first valve 13a are set gradually on the pipeline of the threeway connection, argon bottle 9b is connected to the threeway
Pipeline on set gradually nitrogen stream meter 10b and the second valve 13b, be arranged on the pipeline that the threeway is connected to heating tank 12
Third valve 13c.
The method that assessment non-oxidic material complex stress provided by the invention acts on lower reflex action, including walk as follows
It is rapid:
Non-oxidic material Sample A is fixed between upper pressure bar 3 and lower pressure bar 4, is set and is heated up by temperature control cabinet 8
Program, and by the temperature of 7 real-time measurement Sample A flat-temperature zone in Si-Mo rod heating furnace 6 of thermocouple；
Argon gas is passed through into Si-Mo rod heating furnace 6 by air inlet pipe 15 in temperature-rise period, argon atmosphere guarantor is carried out to Sample A
Shield；
After being warming up to preset temperature in Si-Mo rod heating furnace 6, default stress is applied to Sample A by stress loading device 1, together
When be passed through from air inlet pipe 15 into Si-Mo rod heating furnace 6 oxygen atmosphere, water vapour atmosphere or oxygen and water vapour coupling atmosphere extremely
Default atmosphere partial pressure；
Apply stress by temperature, stress loading device 1 in control Si-Mo rod heating furnace 6, and to water vapour or/and oxygen point
The control of pressure, can temperature field, air-flowing environment and stress field coordinated regulation to Sample A reaction process, thus to non-oxidic material
The reflex action of high-temperature interface is assessed.
Wherein, the preset temperature in Si-Mo rod heating furnace 6 is 200-1600 DEG C, and the default stress is 0-1Mpa.It is default
Oxygen atmosphere partial pressure is 0.2-0.8atm in atmosphere partial pressure, and the partial pressure of the water vapour atmosphere is 0.3-0.9atm, the oxygen
It is 0.3-0.9atm with steam partial pressure in water vapour coupling atmosphere, oxygen partial pressure 0.1-0.7atm.
Assessment non-oxidic material complex stress provided in an embodiment of the present invention acts on the work of the system of lower reflex action
Principle and working method are specific as follows:
When carrying out non-oxidic material high temperature test, first the Sample A that cylindrical is pre-machined into is fixed on
Between pressure bar 3 and lower pressure bar 4, the setting of pedestal 5 plays a supporting role to lower pressure bar 4 in lower 4 lower end of pressure bar.Pass through temperature control cabinet
8 setting temperature programs, by the intracorporal flat-temperature zone temperature of 6 furnace of Si-Mo rod heating furnace locating for 7 real-time measurement Sample A of thermocouple,
It is connected between temperature control cabinet 8 and thermocouple 7 by electric wire.The first valve 13a is closed, the second valve 13b and third are opened
Argon gas in valve 13c, argon bottle 9b by pipeline after heating tank 12 and heated tank 12 preheat, from corundum air inlet
Pipe 15 enters in Si-Mo rod heating furnace 6, protects Sample A in 6 temperature-rise period of Si-Mo rod heating furnace by argon atmosphere.Argon
The gas flow of gas is controlled by argon flow meter 10b to be led between 0-500ml/min, argon bottle 9b and argon flow meter 10b
Cross the connection of plastics tracheae.
After 6 furnace body of Si-Mo rod heating furnace is raised to 200-1600 DEG C of preset temperature, stress loading is carried out according to experiment condition
Regulate and control with atmosphere.The stress that Sample A is born realizes that size is controlled by strain gauge 2 in 0- by stress loading device 1
1Mpa.Experiment atmosphere is divided into three kinds: i.e. oxygen independent role environment, water vapour independent role environment and oxygen and water vapour coupling
Close environment.
Under oxygen independent role environment, oxygen is supplied by oxygen cylinder 9a, and gas flow passes through oxygen flow meter 10a
Control is in 0-500ml/min.The second valve 13b is closed, the first valve 13a and third valve 13c is opened, in oxygen cylinder 9a
Oxygen is discharged by tee tube after heating tank 12 preheated through oxygen flow meter 10a, by air induction hose from corundum air inlet
Pipe 15 is entered in Si-Mo rod heating furnace 6.To change oxygen partial pressure, the second valve 13b can be opened, make argon gas and oxygen
It is discharged into heating tank 12 simultaneously, so that oxygen atmosphere partial pressure is set in 0.2- by adjusting the flow proportional of oxygen and argon gas
0.8atm, in the specific implementation process, oxygen partial pressure can be respectively set as 0.2atm, 0.5atm and 0.8atm etc..
Under water vapour independent role environment, the deionized water of preset flow is extracted to heating tank 13 by peristaltic pump 12
In, peristaltic pump 12 is connected with heating tank 13 by rubber hose.It simultaneously closes off the first valve 13a, opens the second valve 13b and the
Three valve 13c, are passed into the argon gas of preset flow as carrier gas in heating tank 12, and the temperature of heating tank 12 is constant to be set as water
Boiling point more than, such as 150 DEG C, 200 DEG C and 250 DEG C, heat the deionized water entered in heating tank 12 in heating tank 13
At water vapour.Water vapour is delivered in Si-Mo rod heating furnace 6 via the air induction hose and corundum air inlet pipe 15 for being wound with heater wire 14,
The temperature of the heater wire 14 is also constant to be arranged above boiling point of water, such as 120 DEG C, 130 DEG C and 140 DEG C.It is compacted by changing
The flow of dynamic pump 11 and the gas flow of argon gas control the partial pressure of water vapour atmosphere, it can be achieved that control to steam partial pressure
In 0.3-0.9atm, in the specific implementation process, the partial pressure of water vapour can be respectively set as 0.3atm, 0.6atm and 0.9atm
Deng.
Under oxygen and water vapour coupling environment, the deionized water of preset flow is extracted to adding by peristaltic pump 12
In hot tank 13, peristaltic pump 12 is connected with heating tank 13 by rubber hose.The second valve 13b is simultaneously closed off, the first valve is opened
13a and third valve 13c, is passed into the oxygen of preset flow as carrier gas and reaction gas in heating tank 12, heating tank temperature
It is more than the boiling point of constant water, such as 150 DEG C, 200 DEG C and 250 DEG C.Via the air induction hose and corundum air inlet for being wound with heater wire 14
The gaseous mixture of pipe 15, water vapour and oxygen is delivered in Si-Mo rod heating furnace 6.By the flow and oxygen that change peristaltic pump 11
Gas flow makes oxygen and water vapour couple the steam partial pressure in atmosphere, it can be achieved that control to water vapour and oxygen partial pressure
Control is in 0.3-0.9atm, oxygen partial pressure is controlled in 0.1-0.7atm.In the specific implementation process, when steam partial pressure is distinguished
When being set as 0.3atm, 0.6atm and 0.9atm, oxygen partial pressure is respectively set as 0.7atm, 0.4atm and 0.1atm.
Based on Stress Control device, atmosphere control device and temperature control equipment, by control set different temperature fields,
Air-flowing environment and stress field are, it can be achieved that carry out temperature field, air-flowing environment and the stress field during non-oxidic material specimen reaction
Coordinated regulation, and then can be in the more condition of closing to reality Service Environment to the high-temperature interface reflex action of non-oxidic material
It is assessed.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (10)
1. the system that a kind of assessment non-oxidic material complex stress acts on lower reflex action, it is characterised in that: including
Stress Control device: being arranged on the non-oxidic material sample, for when assessing the reflex action of the sample
Stress field is provided to sample；
Temperature control equipment: being arranged on the non-oxidic material sample, for when assessing the reflex action of the sample
Temperature field is provided to sample；
Atmosphere control device: being arranged on the non-oxidic material sample, for when assessing the reflex action of the sample
Air-flowing environment is provided to sample.
2. the system that assessment non-oxidic material complex stress according to claim 1 acts on lower reflex action, feature
Be: the Stress Control device includes the upper pressure bar and lower pressure bar that the sample upper and lower ends are arranged in, with the upper pressure bar
The stress loading device for pressing by upper pressure bar to the sample is connected, and is connect with the lower pressure bar and is used to support lower pressure bar
Pedestal, strain gauge is set between the stress loading device and upper pressure bar.
3. the system that assessment non-oxidic material complex stress according to claim 2 acts on lower reflex action, feature
Be: the temperature control equipment includes the Si-Mo rod heating furnace for accommodating the sample and heating to sample, is located at the Si-Mo rod
Thermocouple in heating furnace, and the temperature control cabinet being electrically connected respectively with the Si-Mo rod heating furnace and thermocouple, the upper pressure
The lower end of stick and the upper end of lower pressure bar are arranged in the Si-Mo rod heating furnace.
4. the system that assessment non-oxidic material complex stress according to claim 3 acts on lower reflex action, feature
Be: the atmosphere control device includes: oxygen cylinder, argon bottle, for extracting the peristaltic pump of deionized water, to the oxygen,
Argon gas and deionized water preheating heating tank are arranged in the air inlet pipe on Si-Mo rod heating furnace top, and are arranged described
The escape pipe of Si-Mo rod heating furnace lower part, the oxygen cylinder, argon bottle and peristaltic pump are connected to the heating tank pipeline respectively, institute
Heating tank is stated to be connected to the air inlet pipeline.
5. the system that assessment non-oxidic material complex stress according to claim 3 acts on lower reflex action, feature
Be: the oxygen cylinder and argon bottle are connected to by threeway with the heating tank pipeline, and the oxygen cylinder is connected to the threeway
Pipeline on set gradually oxygen flow meter and the first valve, set gradually on the pipeline that the argon bottle is connected to the threeway
Third valve is arranged on the pipeline that the threeway is connected to the heating tank for nitrogen stream meter and the second valve.
6. the system that assessment non-oxidic material complex stress according to claim 3 acts on lower reflex action, feature
Be: the heating tank is connected to the air inlet pipe by air induction hose, and heater wire is arranged on the air induction hose.
7. the system that assessment non-oxidic material complex stress according to claim 3 acts on lower reflex action, feature
Be: the air inlet pipe and an air outlet pipe is alundum tube.
8. a kind of method that assessment non-oxidic material complex stress acts on lower reflex action, which is characterized in that including walking as follows
It is rapid:
Non-oxidic material sample is fixed between upper pressure bar and lower pressure bar, temperature program is set by temperature control cabinet, and
By the temperature of thermocouple real-time measurement sample flat-temperature zone in Si-Mo rod heating furnace；
Argon gas is passed through into Si-Mo rod heating furnace by air inlet pipe in temperature-rise period, argon atmosphere protection is carried out to sample；
After being warming up to preset temperature in Si-Mo rod heating furnace, default stress is applied to sample by stress loading device, at the same by into
Tracheae is passed through oxygen atmosphere, water vapour atmosphere or oxygen into Si-Mo rod heating furnace and water vapour couples atmosphere to default atmosphere
Partial pressure；
In-furnace temperature is heated by control Si-Mo rod, stress loading device applies stress, and the control to water vapour or/and oxygen partial pressure
System, can temperature field, air-flowing environment and stress field coordinated regulation to specimen reaction process, thus to non-oxidic material high-temperature interface
Reflex action assessed.
9. the method that assessment non-oxidic material complex stress according to claim 8 acts on lower reflex action, feature
Be: the preset temperature in the Si-Mo rod heating furnace is 200-1600 DEG C, and the default stress is 0-1 Mpa.
10. the method that assessment non-oxidic material complex stress according to claim 8 acts on lower reflex action, feature
Be: oxygen atmosphere partial pressure is 0.2-0.8atm in the default atmosphere partial pressure, and the partial pressure of the water vapour atmosphere is 0.3-
0.9atm, the oxygen and water vapour coupling atmosphere in steam partial pressure be 0.3-0.9atm, oxygen partial pressure 0.1-0.7atm.
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Cited By (1)
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|---|---|---|---|---|
| CN111272574A (en) * | 2020-02-14 | 2020-06-12 | 北京科技大学 | Device and method for in-situ testing reaction behavior of refractory material under stress action |
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